Annotation of html5/spec-author-view/the-button-element.html, revision 1.419
1.419 ! mike 1: <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"><html lang="en-US-x-Hixie"><meta content="text/html; charset=ascii" http-equiv="Content-Type"><title>4.10.8 The button element — HTML5 (Edition for Web Authors)</title><meta content="width=device-width;" name="viewport"><meta content="IE=edge,chrome=1" http-equiv="X-UA-Compatible"><link href="whatwg.css" rel="stylesheet"><style type="text/css">
1.1 mike 2: pre { margin-left: 2em; white-space: pre-wrap; }
3: h2 { margin: 3em 0 1em 0; }
4: h3 { margin: 2.5em 0 1em 0; }
5: h4 { margin: 2.5em 0 0.75em 0; }
6: h5, h6 { margin: 2.5em 0 1em; }
7: h1 + h2, h1 + h2 + h2 { margin: 0.75em 0 0.75em; }
8: h2 + h3, h3 + h4, h4 + h5, h5 + h6 { margin-top: 0.5em; }
9: p { margin: 1em 0; }
10: hr:not(.top) { display: block; background: none; border: none; padding: 0; margin: 2em 0; height: auto; }
11: dl, dd { margin-top: 0; margin-bottom: 0; }
12: dt { margin-top: 0.75em; margin-bottom: 0.25em; clear: left; }
13: dt + dt { margin-top: 0; }
14: dd dt { margin-top: 0.25em; margin-bottom: 0; }
15: dd p { margin-top: 0; }
16: dd dl + p { margin-top: 1em; }
17: dd table + p { margin-top: 1em; }
18: p + * > li, dd li { margin: 1em 0; }
19: dt, dfn { font-weight: bold; font-style: normal; }
20: dt dfn { font-style: italic; }
21: pre, code { font-size: inherit; font-family: monospace; font-variant: normal; }
22: pre strong { color: black; font: inherit; font-weight: bold; background: yellow; }
23: pre em { font-weight: bolder; font-style: normal; }
24: @media screen { code { color: orangered; } code :link, code :visited { color: inherit; } }
25: var sub { vertical-align: bottom; font-size: smaller; position: relative; top: 0.1em; }
26: table { border-collapse: collapse; border-style: hidden hidden none hidden; }
1.34 mike 27: table thead, table tbody { border-bottom: solid; }
1.1 mike 28: table tbody th:first-child { border-left: solid; }
29: table tbody th { text-align: left; }
30: table td, table th { border-left: solid; border-right: solid; border-bottom: solid thin; vertical-align: top; padding: 0.2em; }
31: blockquote { margin: 0 0 0 2em; border: 0; padding: 0; font-style: italic; }
32:
33: .bad, .bad *:not(.XXX) { color: gray; border-color: gray; background: transparent; }
34: .matrix, .matrix td { border: none; text-align: right; }
35: .matrix { margin-left: 2em; }
36: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
37: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
38: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
39:
40: .toc dfn, h1 dfn, h2 dfn, h3 dfn, h4 dfn, h5 dfn, h6 dfn { font: inherit; }
41: img.extra { float: right; }
42: pre.idl { border: solid thin; background: #EEEEEE; color: black; padding: 0.5em 1em; }
43: pre.idl :link, pre.idl :visited { color: inherit; background: transparent; }
44: pre.css { border: solid thin; background: #FFFFEE; color: black; padding: 0.5em 1em; }
45: pre.css:first-line { color: #AAAA50; }
1.23 mike 46: dl.domintro { color: green; margin: 2em 0 2em 2em; padding: 0.5em 1em; border: none; background: #DDFFDD; }
1.1 mike 47: hr + dl.domintro, div.impl + dl.domintro { margin-top: 2.5em; margin-bottom: 1.5em; }
48: dl.domintro dt, dl.domintro dt * { color: black; text-decoration: none; }
49: dl.domintro dd { margin: 0.5em 0 1em 2em; padding: 0; }
50: dl.domintro dd p { margin: 0.5em 0; }
51: dl.switch { padding-left: 2em; }
52: dl.switch > dt { text-indent: -1.5em; }
53: dl.switch > dt:before { content: '\21AA'; padding: 0 0.5em 0 0; display: inline-block; width: 1em; text-align: right; line-height: 0.5em; }
54: dl.triple { padding: 0 0 0 1em; }
55: dl.triple dt, dl.triple dd { margin: 0; display: inline }
56: dl.triple dt:after { content: ':'; }
57: dl.triple dd:after { content: '\A'; white-space: pre; }
58: .diff-old { text-decoration: line-through; color: silver; background: transparent; }
59: .diff-chg, .diff-new { text-decoration: underline; color: green; background: transparent; }
60: a .diff-new { border-bottom: 1px blue solid; }
61:
62: h2 { page-break-before: always; }
63: h1, h2, h3, h4, h5, h6 { page-break-after: avoid; }
64: h1 + h2, hr + h2.no-toc { page-break-before: auto; }
65:
1.306 mike 66: p > span:not([title=""]):not([class="XXX"]):not([class="impl"]):not([class="note"]),
67: li > span:not([title=""]):not([class="XXX"]):not([class="impl"]):not([class="note"]), { border-bottom: solid #9999CC; }
1.1 mike 68:
69: div.head { margin: 0 0 1em; padding: 1em 0 0 0; }
70: div.head p { margin: 0; }
71: div.head h1 { margin: 0; }
72: div.head .logo { float: right; margin: 0 1em; }
73: div.head .logo img { border: none } /* remove border from top image */
74: div.head dl { margin: 1em 0; }
75: div.head p.copyright, div.head p.alt { font-size: x-small; font-style: oblique; margin: 0; }
76:
77: body > .toc > li { margin-top: 1em; margin-bottom: 1em; }
78: body > .toc.brief > li { margin-top: 0.35em; margin-bottom: 0.35em; }
79: body > .toc > li > * { margin-bottom: 0.5em; }
80: body > .toc > li > * > li > * { margin-bottom: 0.25em; }
81: .toc, .toc li { list-style: none; }
82:
83: .brief { margin-top: 1em; margin-bottom: 1em; line-height: 1.1; }
84: .brief li { margin: 0; padding: 0; }
85: .brief li p { margin: 0; padding: 0; }
86:
87: .category-list { margin-top: -0.75em; margin-bottom: 1em; line-height: 1.5; }
88: .category-list::before { content: '\21D2\A0'; font-size: 1.2em; font-weight: 900; }
89: .category-list li { display: inline; }
90: .category-list li:not(:last-child)::after { content: ', '; }
91: .category-list li > span, .category-list li > a { text-transform: lowercase; }
92: .category-list li * { text-transform: none; } /* don't affect <code> nested in <a> */
93:
94: .XXX { color: #E50000; background: white; border: solid red; padding: 0.5em; margin: 1em 0; }
95: .XXX > :first-child { margin-top: 0; }
96: p .XXX { line-height: 3em; }
97: .annotation { border: solid thin black; background: #0C479D; color: white; position: relative; margin: 8px 0 20px 0; }
98: .annotation:before { position: absolute; left: 0; top: 0; width: 100%; height: 100%; margin: 6px -6px -6px 6px; background: #333333; z-index: -1; content: ''; }
99: .annotation :link, .annotation :visited { color: inherit; }
100: .annotation :link:hover, .annotation :visited:hover { background: transparent; }
101: .annotation span { border: none ! important; }
102: .note { color: green; background: transparent; font-family: sans-serif; }
103: .warning { color: red; background: transparent; }
104: .note, .warning { font-weight: bolder; font-style: italic; }
105: p.note, div.note { padding: 0.5em 2em; }
106: span.note { padding: 0 2em; }
107: .note p:first-child, .warning p:first-child { margin-top: 0; }
108: .note p:last-child, .warning p:last-child { margin-bottom: 0; }
109: .warning:before { font-style: normal; }
110: p.note:before { content: 'Note: '; }
111: p.warning:before { content: '\26A0 Warning! '; }
112:
113: .bookkeeping:before { display: block; content: 'Bookkeeping details'; font-weight: bolder; font-style: italic; }
114: .bookkeeping { font-size: 0.8em; margin: 2em 0; }
115: .bookkeeping p { margin: 0.5em 2em; display: list-item; list-style: square; }
1.132 mike 116: .bookkeeping dt { margin: 0.5em 2em 0; }
117: .bookkeeping dd { margin: 0 3em 0.5em; }
1.1 mike 118:
119: h4 { position: relative; z-index: 3; }
120: h4 + .element, h4 + div + .element { margin-top: -2.5em; padding-top: 2em; }
121: .element {
122: background: #EEEEFF;
123: color: black;
124: margin: 0 0 1em 0.15em;
125: padding: 0 1em 0.25em 0.75em;
126: border-left: solid #9999FF 0.25em;
127: position: relative;
128: z-index: 1;
129: }
130: .element:before {
131: position: absolute;
132: z-index: 2;
133: top: 0;
134: left: -1.15em;
135: height: 2em;
136: width: 0.9em;
137: background: #EEEEFF;
138: content: ' ';
139: border-style: none none solid solid;
140: border-color: #9999FF;
141: border-width: 0.25em;
142: }
143:
144: .example { display: block; color: #222222; background: #FCFCFC; border-left: double; margin-left: 2em; padding-left: 1em; }
145: td > .example:only-child { margin: 0 0 0 0.1em; }
146:
147: ul.domTree, ul.domTree ul { padding: 0 0 0 1em; margin: 0; }
148: ul.domTree li { padding: 0; margin: 0; list-style: none; position: relative; }
149: ul.domTree li li { list-style: none; }
150: ul.domTree li:first-child::before { position: absolute; top: 0; height: 0.6em; left: -0.75em; width: 0.5em; border-style: none none solid solid; content: ''; border-width: 0.1em; }
151: ul.domTree li:not(:last-child)::after { position: absolute; top: 0; bottom: -0.6em; left: -0.75em; width: 0.5em; border-style: none none solid solid; content: ''; border-width: 0.1em; }
152: ul.domTree span { font-style: italic; font-family: serif; }
153: ul.domTree .t1 code { color: purple; font-weight: bold; }
154: ul.domTree .t2 { font-style: normal; font-family: monospace; }
155: ul.domTree .t2 .name { color: black; font-weight: bold; }
156: ul.domTree .t2 .value { color: blue; font-weight: normal; }
157: ul.domTree .t3 code, .domTree .t4 code, .domTree .t5 code { color: gray; }
158: ul.domTree .t7 code, .domTree .t8 code { color: green; }
159: ul.domTree .t10 code { color: teal; }
160:
1.14 mike 161: body.dfnEnabled dfn { cursor: pointer; }
162: .dfnPanel {
163: display: inline;
164: position: absolute;
165: z-index: 10;
166: height: auto;
167: width: auto;
168: padding: 0.5em 0.75em;
169: font: small sans-serif, Droid Sans Fallback;
170: background: #DDDDDD;
171: color: black;
172: border: outset 0.2em;
173: }
174: .dfnPanel * { margin: 0; padding: 0; font: inherit; text-indent: 0; }
175: .dfnPanel :link, .dfnPanel :visited { color: black; }
176: .dfnPanel p { font-weight: bolder; }
177: .dfnPanel * + p { margin-top: 0.25em; }
178: .dfnPanel li { list-style-position: inside; }
179:
1.1 mike 180: #configUI { position: absolute; z-index: 20; top: 10em; right: 1em; width: 11em; font-size: small; }
181: #configUI p { margin: 0.5em 0; padding: 0.3em; background: #EEEEEE; color: black; border: inset thin; }
182: #configUI p label { display: block; }
183: #configUI #updateUI, #configUI .loginUI { text-align: center; }
184: #configUI input[type=button] { display: block; margin: auto; }
1.121 mike 185:
1.321 mike 186: fieldset { margin: 1em; padding: 0.5em 1em; }
187: fieldset > legend + * { margin-top: 0; }
1.293 mike 188: fieldset > :last-child { margin-bottom: 0; }
1.321 mike 189: fieldset p { margin: 0.5em 0; }
190:
1.419 ! mike 191: </style><link href="http://www.w3.org/StyleSheets/TR/W3C-ED" rel="stylesheet" type="text/css"><link href="style.css" rel="stylesheet"><script src="link-fixup.js" type="text/javascript"></script><style type="text/css">
1.1 mike 192:
193: .applies thead th > * { display: block; }
194: .applies thead code { display: block; }
195: .applies tbody th { whitespace: nowrap; }
196: .applies td { text-align: center; }
197: .applies .yes { background: yellow; }
198:
1.136 mike 199: .matrix, .matrix td { border: hidden; text-align: right; }
1.1 mike 200: .matrix { margin-left: 2em; }
201:
202: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
203: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
204: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
205:
1.213 mike 206: td.eg { border-width: thin; text-align: center; }
207:
1.1 mike 208: #table-example-1 { border: solid thin; border-collapse: collapse; margin-left: 3em; }
209: #table-example-1 * { font-family: "Essays1743", serif; line-height: 1.01em; }
210: #table-example-1 caption { padding-bottom: 0.5em; }
211: #table-example-1 thead, #table-example-1 tbody { border: none; }
212: #table-example-1 th, #table-example-1 td { border: solid thin; }
213: #table-example-1 th { font-weight: normal; }
214: #table-example-1 td { border-style: none solid; vertical-align: top; }
215: #table-example-1 th { padding: 0.5em; vertical-align: middle; text-align: center; }
216: #table-example-1 tbody tr:first-child td { padding-top: 0.5em; }
217: #table-example-1 tbody tr:last-child td { padding-bottom: 1.5em; }
218: #table-example-1 tbody td:first-child { padding-left: 2.5em; padding-right: 0; width: 9em; }
219: #table-example-1 tbody td:first-child::after { content: leader(". "); }
220: #table-example-1 tbody td { padding-left: 2em; padding-right: 2em; }
221: #table-example-1 tbody td:first-child + td { width: 10em; }
222: #table-example-1 tbody td:first-child + td ~ td { width: 2.5em; }
223: #table-example-1 tbody td:first-child + td + td + td ~ td { width: 1.25em; }
224:
225: .apple-table-examples { border: none; border-collapse: separate; border-spacing: 1.5em 0em; width: 40em; margin-left: 3em; }
226: .apple-table-examples * { font-family: "Times", serif; }
227: .apple-table-examples td, .apple-table-examples th { border: none; white-space: nowrap; padding-top: 0; padding-bottom: 0; }
228: .apple-table-examples tbody th:first-child { border-left: none; width: 100%; }
229: .apple-table-examples thead th:first-child ~ th { font-size: smaller; font-weight: bolder; border-bottom: solid 2px; text-align: center; }
230: .apple-table-examples tbody th::after, .apple-table-examples tfoot th::after { content: leader(". ") }
231: .apple-table-examples tbody th, .apple-table-examples tfoot th { font: inherit; text-align: left; }
232: .apple-table-examples td { text-align: right; vertical-align: top; }
233: .apple-table-examples.e1 tbody tr:last-child td { border-bottom: solid 1px; }
1.9 mike 234: .apple-table-examples.e1 tbody + tbody tr:last-child td { border-bottom: double 3px; }
235: .apple-table-examples.e2 th[scope=row] { padding-left: 1em; }
236: .apple-table-examples sup { line-height: 0; }
237:
1.11 mike 238: .details-example img { vertical-align: top; }
239:
1.386 mike 240: #base64-table {
241: white-space: nowrap;
242: font-size: 0.6em;
243: column-width: 6em;
244: column-count: 5;
245: column-gap: 1em;
246: -moz-column-width: 6em;
247: -moz-column-count: 5;
248: -moz-column-gap: 1em;
249: -webkit-column-width: 6em;
250: -webkit-column-count: 5;
251: -webkit-column-gap: 1em;
252: }
253: #base64-table thead { display: none; }
254: #base64-table * { border: none; }
255: #base64-table tbody td:first-child:after { content: ':'; }
256: #base64-table tbody td:last-child { text-align: right; }
257:
1.26 mike 258: #named-character-references-table {
1.257 mike 259: white-space: nowrap;
1.26 mike 260: font-size: 0.6em;
1.257 mike 261: column-width: 30em;
1.26 mike 262: column-gap: 1em;
1.257 mike 263: -moz-column-width: 30em;
1.26 mike 264: -moz-column-gap: 1em;
1.257 mike 265: -webkit-column-width: 30em;
1.26 mike 266: -webkit-column-gap: 1em;
267: }
1.257 mike 268: #named-character-references-table > table > tbody > tr > td:first-child + td,
1.26 mike 269: #named-character-references-table > table > tbody > tr > td:last-child { text-align: center; }
270: #named-character-references-table > table > tbody > tr > td:last-child:hover > span { position: absolute; top: auto; left: auto; margin-left: 0.5em; line-height: 1.2; font-size: 5em; border: outset; padding: 0.25em 0.5em; background: white; width: 1.25em; height: auto; text-align: center; }
1.257 mike 271: #named-character-references-table > table > tbody > tr#entity-CounterClockwiseContourIntegral > td:first-child { font-size: 0.5em; }
1.26 mike 272:
1.35 mike 273: .glyph.control { color: red; }
274:
1.38 mike 275: @font-face {
276: font-family: 'Essays1743';
277: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743.ttf');
278: }
279: @font-face {
280: font-family: 'Essays1743';
281: font-weight: bold;
282: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-Bold.ttf');
283: }
284: @font-face {
285: font-family: 'Essays1743';
286: font-style: italic;
287: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-Italic.ttf');
288: }
289: @font-face {
290: font-family: 'Essays1743';
291: font-style: italic;
292: font-weight: bold;
293: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-BoldItalic.ttf');
294: }
295:
1.399 mike 296: </style><link href="data:text/css," id="complete" rel="stylesheet" title="Complete specification"><link href="data:text/css,.impl%20%7B%20display:%20none;%20%7D%0Ahtml%20%7B%20border:%20solid%20yellow;%20%7D%20.domintro:before%20%7B%20display:%20none;%20%7D" id="author" rel="alternate stylesheet" title="Author documentation only"><link href="data:text/css,.impl%20%7B%20background:%20%23FFEEEE;%20%7D%20.domintro:before%20%7B%20background:%20%23FFEEEE;%20%7D" id="highlight" rel="alternate stylesheet" title="Highlight implementation requirements"><script type="text/javascript">
297: function getCookie(name) {
298: var params = location.search.substr(1).split("&");
299: for (var index = 0; index < params.length; index++) {
300: if (params[index] == name)
301: return "1";
302: var data = params[index].split("=");
303: if (data[0] == name)
304: return unescape(data[1]);
305: }
306: var cookies = document.cookie.split("; ");
307: for (var index = 0; index < cookies.length; index++) {
308: var data = cookies[index].split("=");
309: if (data[0] == name)
310: return unescape(data[1]);
311: }
312: return null;
313: }
314: function load(script) {
315: var e = document.createElement('script');
316: e.setAttribute('src', script + '?' + encodeURIComponent(location) + '&' + encodeURIComponent(document.referrer));
317: document.body.appendChild(e);
318: }
319: function init() {
320: if (location.search == '?slow-browser')
321: return;
322: var configUI = document.createElement('div');
323: configUI.id = 'configUI';
324: document.body.appendChild(configUI);
325: if (document.getElementById('head'))
326: load('toc.js');
327: load('dfn.js');
328: if (getCookie('profile') == '1')
329: document.getElementsByTagName('h2')[0].textContent += '; load: ' + (new Date() - loadTimer) + 'ms';
330: fixBrokenLink();
331: }
332: </script><link href="common-input-element-attributes.html" rel="prev" title="4.10.7.2 Common input element attributes">
1.160 mike 333: <link href="Overview.html#contents" rel="index" title="Table of contents">
334: <link href="association-of-controls-and-forms.html" rel="next" title="4.10.18 Association of controls and forms">
1.419 ! mike 335: <body class="split chapter" onload="fixBrokenLink(); init()"><div class="head" id="head">
1.9 mike 336: <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
1.36 mike 337:
1.418 mike 338: <h1>HTML5 <span class="edition">Edition for Web Authors</span> <span class="rcsrevision">revision 1.4842</span></h1>
1.9 mike 339: </div><div>
1.320 mike 340: <a href="common-input-element-attributes.html">← 4.10.7.2 Common input element attributes</a> –
1.160 mike 341: <a href="Overview.html#contents">Table of contents</a> –
1.320 mike 342: <a href="association-of-controls-and-forms.html">4.10.18 Association of controls and forms →</a>
1.417 mike 343: <ol class="toc"><li><ol><li><ol><li><a href="the-button-element.html#the-button-element" id="x4.10.8-the-button-element"><span class="secno">4.10.8 </span>The <code>button</code> element</a><li><a href="the-button-element.html#the-select-element" id="x4.10.9-the-select-element"><span class="secno">4.10.9 </span>The <code>select</code> element</a><li><a href="the-button-element.html#the-datalist-element" id="x4.10.10-the-datalist-element"><span class="secno">4.10.10 </span>The <code>datalist</code> element</a><li><a href="the-button-element.html#the-optgroup-element" id="x4.10.11-the-optgroup-element"><span class="secno">4.10.11 </span>The <code>optgroup</code> element</a><li><a href="the-button-element.html#the-option-element" id="x4.10.12-the-option-element"><span class="secno">4.10.12 </span>The <code>option</code> element</a><li><a href="the-button-element.html#the-textarea-element" id="x4.10.13-the-textarea-element"><span class="secno">4.10.13 </span>The <code>textarea</code> element</a><li><a href="the-button-element.html#the-keygen-element" id="x4.10.14-the-keygen-element"><span class="secno">4.10.14 </span>The <code>keygen</code> element</a><li><a href="the-button-element.html#the-output-element" id="x4.10.15-the-output-element"><span class="secno">4.10.15 </span>The <code>output</code> element</a><li><a href="the-button-element.html#the-progress-element" id="x4.10.16-the-progress-element"><span class="secno">4.10.16 </span>The <code>progress</code> element</a><li><a href="the-button-element.html#the-meter-element" id="x4.10.17-the-meter-element"><span class="secno">4.10.17 </span>The <code>meter</code> element</a></ol></ol></ol></div>
1.156 mike 344:
1.202 mike 345: <h4 id="the-button-element"><span class="secno">4.10.8 </span>The <dfn><code>button</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.415 mike 346: <dd><a href="content-models.html#flow-content" id="flow-content_125">Flow content</a>.</dd>
347: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_138">Phrasing content</a>.</dd>
348: <dd><a href="content-models.html#interactive-content" id="interactive-content_13">Interactive content</a>.</dd>
349: <dd><a href="forms.html#category-listed" id="category-listed_5" title="category-listed">Listed</a>, <a href="forms.html#category-label" id="category-label_3" title="category-label">labelable</a>, and <a href="forms.html#category-submit" id="category-submit_4" title="category-submit">submittable</a> <a href="forms.html#form-associated-element" id="form-associated-element_9">form-associated element</a>.</dd>
1.203 mike 350: <dt>Contexts in which this element can be used:</dt>
1.415 mike 351: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_139">phrasing content</a> is expected.</dd>
1.9 mike 352: <dt>Content model:</dt>
1.415 mike 353: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_140">Phrasing content</a>, but there must be no <a href="content-models.html#interactive-content" id="interactive-content_14">interactive content</a> descendant.</dd>
1.9 mike 354: <dt>Content attributes:</dt>
1.415 mike 355: <dd><a href="elements.html#global-attributes" id="global-attributes_89">Global attributes</a></dd>
356: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus_1">autofocus</a></code></dd>
357: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled_13">disabled</a></code></dd>
358: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_49">form</a></code></dd>
359: <dd><code title="attr-fs-formaction"><a href="association-of-controls-and-forms.html#attr-fs-formaction" id="formaction_26">formaction</a></code></dd>
360: <dd><code title="attr-fs-formenctype"><a href="association-of-controls-and-forms.html#attr-fs-formenctype" id="formenctype_26">formenctype</a></code></dd>
361: <dd><code title="attr-fs-formmethod"><a href="association-of-controls-and-forms.html#attr-fs-formmethod" id="formmethod_26">formmethod</a></code></dd>
362: <dd><code title="attr-fs-formnovalidate"><a href="association-of-controls-and-forms.html#attr-fs-formnovalidate" id="formnovalidate_27">formnovalidate</a></code></dd>
363: <dd><code title="attr-fs-formtarget"><a href="association-of-controls-and-forms.html#attr-fs-formtarget" id="formtarget_26">formtarget</a></code></dd>
364: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name_37">name</a></code></dd>
365: <dd><code title="attr-button-type"><a href="#attr-button-type" id="type_75">type</a></code></dd>
366: <dd><code title="attr-button-value"><a href="#attr-button-value" id="value_30">value</a></code></dd>
1.9 mike 367: <dt>DOM interface:</dt>
368: <dd>
1.415 mike 369: <pre class="idl">interface <dfn id="htmlbuttonelement">HTMLButtonElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_97">HTMLElement</a> {
1.162 mike 370: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-autofocus" title='Read about this "autofocus" reference in the full HTML5 spec.'>autofocus</a>;
371: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-disabled" title='Read about this "disabled" reference in the full HTML5 spec.'>disabled</a>;
1.415 mike 372: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement_5">HTMLFormElement</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fae-form" title='Read about this "form" reference in the full HTML5 spec.'>form</a>;
1.162 mike 373: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fs-formaction" title='Read about this "formAction" reference in the full HTML5 spec.'>formAction</a>;
374: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fs-formenctype" title='Read about this "formEnctype" reference in the full HTML5 spec.'>formEnctype</a>;
375: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fs-formmethod" title='Read about this "formMethod" reference in the full HTML5 spec.'>formMethod</a>;
376: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fs-formnovalidate" title='Read about this "formNoValidate" reference in the full HTML5 spec.'>formNoValidate</a>;
377: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fs-formtarget" title='Read about this "formTarget" reference in the full HTML5 spec.'>formTarget</a>;
378: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-name" title='Read about this "name" reference in the full HTML5 spec.'>name</a>;
379: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-button-type" title='Read about this "type" reference in the full HTML5 spec.'>type</a>;
380: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-button-value" title='Read about this "value" reference in the full HTML5 spec.'>value</a>;
381:
382: readonly attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-willvalidate" title='Read about this "willValidate" reference in the full HTML5 spec.'>willValidate</a>;
383: readonly attribute <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#validitystate" title='Read about this "ValidityState" reference in the full HTML5 spec.'>ValidityState</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-validity" title='Read about this "validity" reference in the full HTML5 spec.'>validity</a>;
384: readonly attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-validationmessage" title='Read about this "validationMessage" reference in the full HTML5 spec.'>validationMessage</a>;
385: boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-checkvalidatity" title='Read about this "checkValidity" reference in the full HTML5 spec.'>checkValidity</a>();
386: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-setcustomvalidity" title='Read about this "setCustomValidity" reference in the full HTML5 spec.'>setCustomValidity</a>(in DOMString error);
1.9 mike 387:
1.162 mike 388: readonly attribute <a class="full-spec-link" href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/forms.html#dom-lfe-labels" title='Read about this "labels" reference in the full HTML5 spec.'>labels</a>;
1.9 mike 389: };</pre>
390: </dd>
1.415 mike 391: </dl><p>The <code><a href="#the-button-element" id="button_11">button</a></code> element <a class="full-spec-link" href="http://dev.w3.org/html5/spec/rendering.html#represents" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a
392: button. <p>The element is a <a href="forms.html#concept-button" id="concept-button_4" title="concept-button">button</a>.<p>The <dfn id="attr-button-type" title="attr-button-type"><code>type</code></dfn>
1.9 mike 393: attribute controls the behavior of the button when it is activated.
1.415 mike 394: It is an <a href="common-microsyntaxes.html#enumerated-attribute" id="enumerated-attribute_9">enumerated attribute</a>. The following table
1.160 mike 395: lists the keywords and states for the attribute — the keywords
1.9 mike 396: in the left column map to the states in the cell in the second
1.160 mike 397: column on the same row as the keyword.<table><thead><tr><th> Keyword
398: <th> State
399: <th> Brief description
400: <tbody><tr><td><dfn id="attr-button-type-submit" title="attr-button-type-submit"><code>submit</code></dfn>
1.162 mike 401: <td><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#attr-button-type-submit-state" title='Read about this "Submit Button" reference in the full HTML5 spec.'>Submit Button</a>
1.160 mike 402: <td>Submits the form.
403: <tr><td><dfn id="attr-button-type-reset" title="attr-button-type-reset"><code>reset</code></dfn>
1.162 mike 404: <td><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#attr-button-type-reset-state" title='Read about this "Reset Button" reference in the full HTML5 spec.'>Reset Button</a>
1.160 mike 405: <td>Resets the form.
406: <tr><td><dfn id="attr-button-type-button" title="attr-button-type-button"><code>button</code></dfn>
1.162 mike 407: <td><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#attr-button-type-button-state" title='Read about this "Button" reference in the full HTML5 spec.'>Button</a>
1.160 mike 408: <td>Does nothing.
1.162 mike 409: </table><p>The <i>missing value default</i> is the <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#attr-button-type-submit-state" title='Read about this "Submit Button" reference in the full HTML5 spec.'>Submit Button</a>
1.415 mike 410: state.<p>If the <code title="attr-button-type"><a href="#attr-button-type" id="type_76">type</a></code> attribute is in
1.162 mike 411: the <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#attr-button-type-submit-state" title='Read about this "Submit Button" reference in the full HTML5 spec.'>Submit Button</a>
1.415 mike 412: state, the element is specifically a <a href="forms.html#concept-submit-button" id="concept-submit-button_2" title="concept-submit-button">submit button</a>.<p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_50">form</a></code> attribute is used to
413: explicitly associate the <code><a href="#the-button-element" id="button_12">button</a></code> element with its
414: <a href="association-of-controls-and-forms.html#form-owner" id="form-owner_8">form owner</a>. The <code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name_38">name</a></code>
415: attribute represents the element's name. The <code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled_14">disabled</a></code> attribute is used to make
1.9 mike 416: the control non-interactive and to prevent its value from being
1.415 mike 417: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus_2">autofocus</a></code>
418: attribute controls focus. The <code title="attr-fs-formaction"><a href="association-of-controls-and-forms.html#attr-fs-formaction" id="formaction_27">formaction</a></code>, <code title="attr-fs-formenctype"><a href="association-of-controls-and-forms.html#attr-fs-formenctype" id="formenctype_27">formenctype</a></code>, <code title="attr-fs-formmethod"><a href="association-of-controls-and-forms.html#attr-fs-formmethod" id="formmethod_27">formmethod</a></code>, <code title="attr-fs-formnovalidate"><a href="association-of-controls-and-forms.html#attr-fs-formnovalidate" id="formnovalidate_28">formnovalidate</a></code>, and <code title="attr-fs-formtarget"><a href="association-of-controls-and-forms.html#attr-fs-formtarget" id="formtarget_27">formtarget</a></code> attributes are
419: <a href="association-of-controls-and-forms.html#attributes-for-form-submission" id="attributes-for-form-submission_3">attributes for form submission</a>.<p class="note">The <code title="attr-fs-formnovalidate"><a href="association-of-controls-and-forms.html#attr-fs-formnovalidate" id="formnovalidate_29">formnovalidate</a></code> attribute can
1.9 mike 420: be used to make submit buttons that do not trigger the constraint
1.415 mike 421: validation.<p>The <code title="attr-fs-formaction"><a href="association-of-controls-and-forms.html#attr-fs-formaction" id="formaction_28">formaction</a></code>, <code title="attr-fs-formenctype"><a href="association-of-controls-and-forms.html#attr-fs-formenctype" id="formenctype_28">formenctype</a></code>, <code title="attr-fs-formmethod"><a href="association-of-controls-and-forms.html#attr-fs-formmethod" id="formmethod_28">formmethod</a></code>, <code title="attr-fs-formnovalidate"><a href="association-of-controls-and-forms.html#attr-fs-formnovalidate" id="formnovalidate_30">formnovalidate</a></code>, and <code title="attr-fs-formtarget"><a href="association-of-controls-and-forms.html#attr-fs-formtarget" id="formtarget_28">formtarget</a></code> must not be specified
422: if the element's <code title="attr-button-type"><a href="#attr-button-type" id="type_77">type</a></code>
1.162 mike 423: attribute is not in the <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#attr-button-type-submit-state" title='Read about this "Submit Button" reference in the full HTML5 spec.'>Submit Button</a>
1.160 mike 424: state.<p>The <dfn id="attr-button-value" title="attr-button-value"><code>value</code></dfn>
1.9 mike 425: attribute gives the element's value for the purposes of form
1.162 mike 426: submission. The element's <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#concept-fe-value" title='Read about this "value" reference in the full HTML5 spec.'>value</a> is the value of the element's
1.415 mike 427: <code title="attr-button-value"><a href="#attr-button-value" id="value_31">value</a></code> attribute, if there is
1.160 mike 428: one, or the empty string otherwise.<p class="note">A button (and its value) is only included in the
1.9 mike 429: form submission if the button itself was used to initiate the form
1.160 mike 430: submission.<div class="example">
1.9 mike 431:
432: <p>The following button is labeled "Show hint" and pops up a dialog
433: box when activated:</p>
434:
435: <pre><button type=button
436: onclick="alert('This 15-20 minute piece was composed by George Gershwin.')">
437: Show hint
438: </button></pre>
439:
1.202 mike 440: </div><h4 id="the-select-element"><span class="secno">4.10.9 </span>The <dfn><code>select</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.415 mike 441: <dd><a href="content-models.html#flow-content" id="flow-content_126">Flow content</a>.</dd>
442: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_141">Phrasing content</a>.</dd>
443: <dd><a href="content-models.html#interactive-content" id="interactive-content_15">Interactive content</a>.</dd>
444: <dd><a href="forms.html#category-listed" id="category-listed_6" title="category-listed">Listed</a>, <a href="forms.html#category-label" id="category-label_4" title="category-label">labelable</a>, <a href="forms.html#category-submit" id="category-submit_5" title="category-submit">submittable</a>, and <a href="forms.html#category-reset" id="category-reset_2" title="category-reset">resettable</a> <a href="forms.html#form-associated-element" id="form-associated-element_10">form-associated element</a>.</dd>
1.203 mike 445: <dt>Contexts in which this element can be used:</dt>
1.415 mike 446: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_142">phrasing content</a> is expected.</dd>
1.9 mike 447: <dt>Content model:</dt>
1.415 mike 448: <dd>Zero or more <code><a href="#the-option-element" id="option_9">option</a></code> or <code><a href="#the-optgroup-element" id="optgroup_3">optgroup</a></code> elements.</dd>
1.9 mike 449: <dt>Content attributes:</dt>
1.415 mike 450: <dd><a href="elements.html#global-attributes" id="global-attributes_90">Global attributes</a></dd>
451: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus_3">autofocus</a></code></dd>
452: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled_15">disabled</a></code></dd>
453: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_51">form</a></code></dd>
454: <dd><code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple_34">multiple</a></code></dd>
455: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name_39">name</a></code></dd>
456: <dd><code title="attr-select-required"><a href="#attr-select-required" id="required_28">required</a></code></dd>
457: <dd><code title="attr-select-size"><a href="#attr-select-size" id="size_30">size</a></code></dd>
1.9 mike 458: <dt>DOM interface:</dt>
459: <dd>
1.415 mike 460: <pre class="idl">interface <dfn id="htmlselectelement">HTMLSelectElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_98">HTMLElement</a> {
1.162 mike 461: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-autofocus" title='Read about this "autofocus" reference in the full HTML5 spec.'>autofocus</a>;
462: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-disabled" title='Read about this "disabled" reference in the full HTML5 spec.'>disabled</a>;
1.415 mike 463: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement_6">HTMLFormElement</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fae-form" title='Read about this "form" reference in the full HTML5 spec.'>form</a>;
1.162 mike 464: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-multiple" title='Read about this "multiple" reference in the full HTML5 spec.'>multiple</a>;
465: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-name" title='Read about this "name" reference in the full HTML5 spec.'>name</a>;
1.165 mike 466: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-required" title='Read about this "required" reference in the full HTML5 spec.'>required</a>;
1.162 mike 467: attribute unsigned long <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-size" title='Read about this "size" reference in the full HTML5 spec.'>size</a>;
1.160 mike 468:
1.162 mike 469: readonly attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-type" title='Read about this "type" reference in the full HTML5 spec.'>type</a>;
1.160 mike 470:
1.415 mike 471: readonly attribute <a href="urls.html#htmloptionscollection" id="htmloptionscollection_2">HTMLOptionsCollection</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-options" title='Read about this "options" reference in the full HTML5 spec.'>options</a>;
1.162 mike 472: attribute unsigned long <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-length" title='Read about this "length" reference in the full HTML5 spec.'>length</a>;
1.291 mike 473: getter any <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-item" title='Read about this "item" reference in the full HTML5 spec.'>item</a>(in unsigned long index);
474: any <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-nameditem" title='Read about this "namedItem" reference in the full HTML5 spec.'>namedItem</a>(in DOMString name);
1.415 mike 475: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-add" title='Read about this "add" reference in the full HTML5 spec.'>add</a>(in <a href="elements.html#htmlelement" id="htmlelement_99">HTMLElement</a> element, in optional <a href="elements.html#htmlelement" id="htmlelement_100">HTMLElement</a> before);
476: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-add" title='Read about this "add" reference in the full HTML5 spec.'>add</a>(in <a href="elements.html#htmlelement" id="htmlelement_101">HTMLElement</a> element, in long before);
1.162 mike 477: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-remove" title='Read about this "remove" reference in the full HTML5 spec.'>remove</a>(in long index);
478:
1.415 mike 479: readonly attribute <a href="urls.html#htmlcollection" id="htmlcollection_33">HTMLCollection</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-selectedoptions" title='Read about this "selectedOptions" reference in the full HTML5 spec.'>selectedOptions</a>;
1.162 mike 480: attribute long <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-selectedindex" title='Read about this "selectedIndex" reference in the full HTML5 spec.'>selectedIndex</a>;
481: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-value" title='Read about this "value" reference in the full HTML5 spec.'>value</a>;
482:
483: readonly attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-willvalidate" title='Read about this "willValidate" reference in the full HTML5 spec.'>willValidate</a>;
484: readonly attribute <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#validitystate" title='Read about this "ValidityState" reference in the full HTML5 spec.'>ValidityState</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-validity" title='Read about this "validity" reference in the full HTML5 spec.'>validity</a>;
485: readonly attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-validationmessage" title='Read about this "validationMessage" reference in the full HTML5 spec.'>validationMessage</a>;
486: boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-checkvalidatity" title='Read about this "checkValidity" reference in the full HTML5 spec.'>checkValidity</a>();
487: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-setcustomvalidity" title='Read about this "setCustomValidity" reference in the full HTML5 spec.'>setCustomValidity</a>(in DOMString error);
1.9 mike 488:
1.162 mike 489: readonly attribute <a class="full-spec-link" href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/forms.html#dom-lfe-labels" title='Read about this "labels" reference in the full HTML5 spec.'>labels</a>;
1.9 mike 490: };</pre>
491: </dd>
1.415 mike 492: </dl><p>The <code><a href="#the-select-element" id="select_18">select</a></code> element represents a control for
1.160 mike 493: selecting amongst a set of options.<p>The <dfn id="attr-select-multiple" title="attr-select-multiple"><code>multiple</code></dfn>
1.415 mike 494: attribute is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute_13">boolean attribute</a>. If the attribute is
495: present, then the <code><a href="#the-select-element" id="select_19">select</a></code> element
1.162 mike 496: <a class="full-spec-link" href="http://dev.w3.org/html5/spec/rendering.html#represents" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a control for selecting zero or more options
1.415 mike 497: from the <a href="#concept-select-option-list" id="concept-select-option-list_1" title="concept-select-option-list">list of
1.9 mike 498: options</a>. If the attribute is absent, then the
1.415 mike 499: <code><a href="#the-select-element" id="select_20">select</a></code> element <a class="full-spec-link" href="http://dev.w3.org/html5/spec/rendering.html#represents" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a control for
500: selecting a single option from the <a href="#concept-select-option-list" id="concept-select-option-list_2" title="concept-select-option-list">list of options</a>.<p>The <dfn id="attr-select-size" title="attr-select-size"><code>size</code></dfn>
501: attribute gives the number of options to show to the user. The <code title="attr-input-size"><a href="common-input-element-attributes.html#attr-input-size" id="size_26">size</a></code> attribute, if specified, must
502: have a value that is a <a href="common-microsyntaxes.html#valid-non-negative-integer" id="valid-non-negative-integer_10">valid non-negative integer</a>
503: greater than zero. If the <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple_35">multiple</a></code> attribute is present,
504: then the <code title="attr-input-size"><a href="common-input-element-attributes.html#attr-input-size" id="size_27">size</a></code> attribute's
505: default value is 4. If the <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple_36">multiple</a></code> attribute is absent,
506: then the <code title="attr-input-size"><a href="common-input-element-attributes.html#attr-input-size" id="size_28">size</a></code> attribute's
1.160 mike 507: default value is 1.<p>The <dfn id="concept-select-option-list" title="concept-select-option-list">list of options</dfn>
1.415 mike 508: for a <code><a href="#the-select-element" id="select_21">select</a></code> element consists of all the
509: <code><a href="#the-option-element" id="option_10">option</a></code> element children of the <code><a href="#the-select-element" id="select_22">select</a></code>
510: element, and all the <code><a href="#the-option-element" id="option_11">option</a></code> element children of all the
511: <code><a href="#the-optgroup-element" id="optgroup_4">optgroup</a></code> element children of the <code><a href="#the-select-element" id="select_23">select</a></code>
512: element, in <a href="infrastructure.html#tree-order" id="tree-order_7">tree order</a>.<p>The <dfn id="attr-select-required" title="attr-select-required"><code>required</code></dfn>
513: attribute is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute_14">boolean attribute</a>. When specified, the
1.138 mike 514: user will be required to select a value before submitting the
1.415 mike 515: form.<p>If a <code><a href="#the-select-element" id="select_24">select</a></code> element has a <code title="attr-select-required"><a href="#attr-select-required" id="required_29">required</a></code> attribute specified,
516: does not have a <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple_37">multiple</a></code>
1.162 mike 517: attribute specified, and has a <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#concept-select-size" title='Read about this "display size" reference in the full HTML5 spec.'>display size</a> of 1; and if the
1.415 mike 518: <a href="#concept-option-value" id="concept-option-value_0" title="concept-option-value">value</a> of the first
519: <code><a href="#the-option-element" id="option_12">option</a></code> element in the <code><a href="#the-select-element" id="select_25">select</a></code> element's
520: <a href="#concept-select-option-list" id="concept-select-option-list_3" title="concept-select-option-list">list of options</a> (if
521: any) is the empty string, and that <code><a href="#the-option-element" id="option_13">option</a></code> is not <a href="#concept-option-disabled" id="concept-option-disabled_0" title="concept-option-disabled">disabled</a>, and, finally, that
522: <code><a href="#the-option-element" id="option_14">option</a></code> element's parent node is the <code><a href="#the-select-element" id="select_26">select</a></code>
523: element (and not an <code><a href="#the-optgroup-element" id="optgroup_5">optgroup</a></code> element), then that
524: <code><a href="#the-option-element" id="option_15">option</a></code> is the <code><a href="#the-select-element" id="select_27">select</a></code> element's
525: <dfn id="placeholder-label-option">placeholder label option</dfn>.<p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_52">form</a></code> attribute is used to
526: explicitly associate the <code><a href="#the-select-element" id="select_28">select</a></code> element with its
527: <a href="association-of-controls-and-forms.html#form-owner" id="form-owner_9">form owner</a>. The <code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name_40">name</a></code>
528: attribute represents the element's name. The <code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled_16">disabled</a></code> attribute is used to make
1.9 mike 529: the control non-interactive and to prevent its value from being
1.415 mike 530: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus_4">autofocus</a></code>
1.162 mike 531: attribute controls focus.<dl class="domintro"><dt><var title="">select</var> . <code title="dom-select-type"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-type" title='Read about this "type" reference in the full HTML5 spec.'>type</a></code></dt>
1.9 mike 532:
533: <dd>
534:
535: <p>Returns "<code title="">select-multiple</code>" if the element
1.415 mike 536: has a <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple_38">multiple</a></code>
1.9 mike 537: attribute, and "<code title="">select-one</code>"
538: otherwise.</p>
539:
540: </dd>
541:
1.162 mike 542: <dt><var title="">select</var> . <code title="dom-select-options"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-options" title='Read about this "options" reference in the full HTML5 spec.'>options</a></code></dt>
1.9 mike 543:
544: <dd>
545:
1.415 mike 546: <p>Returns an <code><a href="urls.html#htmloptionscollection" id="htmloptionscollection_3">HTMLOptionsCollection</a></code> of the <a href="#concept-select-option-list" id="concept-select-option-list_4" title="concept-select-option-list">list of options</a>.</p>
1.9 mike 547:
548: </dd>
549:
1.162 mike 550: <dt><var title="">select</var> . <code title="dom-select-length"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-length" title='Read about this "length" reference in the full HTML5 spec.'>length</a></code> [ = <var title="">value</var> ]</dt>
1.9 mike 551: <dd>
1.415 mike 552: <p>Returns the number of elements in the <a href="#concept-select-option-list" id="concept-select-option-list_5" title="concept-select-option-list">list of options</a>.</p>
553: <p>When set to a smaller number, truncates the number of <code><a href="#the-option-element" id="option_16">option</a></code> elements in the <code><a href="#the-select-element" id="select_29">select</a></code>.</p>
554: <p>When set to a greater number, adds new blank <code><a href="#the-option-element" id="option_17">option</a></code> elements to the <code><a href="#the-select-element" id="select_30">select</a></code>.</p>
1.9 mike 555: </dd>
556:
1.162 mike 557: <dt><var title="">element</var> = <var title="">select</var> . <code title="dom-select-item"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-item" title='Read about this "item" reference in the full HTML5 spec.'>item</a></code>(<var title="">index</var>)</dt>
1.9 mike 558: <dt><var title="">select</var>[<var title="">index</var>]</dt>
559: <dd>
1.415 mike 560: <p>Returns the item with index <var title="">index</var> from the <a href="#concept-select-option-list" id="concept-select-option-list_6" title="concept-select-option-list">list of options</a>. The items are sorted in <a href="infrastructure.html#tree-order" id="tree-order_8">tree order</a>.</p>
1.9 mike 561: <p>Returns null if <var title="">index</var> is out of range.</p>
562: </dd>
563:
1.162 mike 564: <dt><var title="">element</var> = <var title="">select</var> . <code title="dom-select-item"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-item" title='Read about this "namedItem" reference in the full HTML5 spec.'>namedItem</a></code>(<var title="">name</var>)</dt>
1.9 mike 565: <dd>
1.415 mike 566: <p>Returns the item with <a href="elements.html#concept-id" id="concept-id_17" title="concept-id">ID</a> or <code title="attr-option-name"><a href="obsolete.html#attr-option-name" id="name_59">name</a></code> <var title="">name</var> from the <a href="#concept-select-option-list" id="concept-select-option-list_7" title="concept-select-option-list">list of options</a>.</p>
1.162 mike 567: <p>If there are multiple matching items, then a <code><a class="full-spec-link" href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a></code> object containing all those elements is returned.</p>
1.415 mike 568: <p>Returns null if no element with that <a href="elements.html#concept-id" id="concept-id_18" title="concept-id">ID</a> could be found.</p>
1.9 mike 569: </dd>
570:
1.162 mike 571: <dt><var title="">select</var> . <code title="dom-select-add"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-add" title='Read about this "add" reference in the full HTML5 spec.'>add</a></code>(<var title="">element</var> [, <var title="">before</var> ])</dt>
1.9 mike 572: <dd>
573: <p>Inserts <var title="">element</var> before the node given by <var title="">before</var>.</p>
574: <p>The <var title="">before</var> argument can be a number, in
575: which case <var title="">element</var> is inserted before the item
1.415 mike 576: with that number, or an element from the <a href="#concept-select-option-list" id="concept-select-option-list_8" title="concept-select-option-list">list of options</a>, in
1.9 mike 577: which case <var title="">element</var> is inserted before that
578: element.</p>
579: <p>If <var title="">before</var> is omitted, null, or a number out
580: of range, then <var title="">element</var> will be added at the
581: end of the list.</p>
1.415 mike 582: <p>This method will throw a <code><a href="urls.html#hierarchy_request_err" id="hierarchy_request_err_5">HIERARCHY_REQUEST_ERR</a></code>
1.9 mike 583: exception if <var title="">element</var> is an ancestor of the
1.415 mike 584: element into which it is to be inserted. If <var title="">element</var> is not an <code><a href="#the-option-element" id="option_18">option</a></code> or
585: <code><a href="#the-optgroup-element" id="optgroup_6">optgroup</a></code> element, then the method does nothing.</p>
1.9 mike 586: </dd>
587:
1.162 mike 588: <dt><var title="">select</var> . <code title="dom-select-selectedOptions"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-selectedoptions" title='Read about this "selectedOptions" reference in the full HTML5 spec.'>selectedOptions</a></code></dt>
1.9 mike 589:
590: <dd>
591:
1.415 mike 592: <p>Returns an <code><a href="urls.html#htmlcollection" id="htmlcollection_34">HTMLCollection</a></code> of the <a href="#concept-select-option-list" id="concept-select-option-list_9" title="concept-select-option-list">list of options</a> that are
1.9 mike 593: selected.</p>
594:
595: </dd>
596:
1.162 mike 597: <dt><var title="">select</var> . <code title="dom-select-selectedIndex"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-selectedindex" title='Read about this "selectedIndex" reference in the full HTML5 spec.'>selectedIndex</a></code> [ = <var title="">value</var> ]</dt>
1.9 mike 598:
599: <dd>
600:
601: <p>Returns the index of the first selected item, if any, or
1.160 mike 602: −1 if there is no selected item.</p>
1.9 mike 603:
604: <p>Can be set, to change the selection.</p>
605:
606: </dd>
607:
1.162 mike 608: <dt><var title="">select</var> . <code title="dom-select-value"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-value" title='Read about this "value" reference in the full HTML5 spec.'>value</a></code> [ = <var title="">value</var> ]</dt>
1.9 mike 609:
610: <dd>
611:
1.162 mike 612: <p>Returns the <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#concept-fe-value" title='Read about this "value" reference in the full HTML5 spec.'>value</a> of the
1.9 mike 613: first selected item, if any, or the empty string if there is no
614: selected item.</p>
615:
616: <p>Can be set, to change the selection.</p>
617:
618: </dd>
619:
620: </dl><div class="example">
621:
1.415 mike 622: <p>The following example shows how a <code><a href="#the-select-element" id="select_31">select</a></code> element
1.9 mike 623: can be used to offer the user with a set of options from which the
624: user can select a single option. The default option is
625: preselected.</p>
626:
627: <pre><p>
628: <label for="unittype">Select unit type:</label>
629: <select id="unittype" name="unittype">
630: <option value="1"> Miner </option>
631: <option value="2"> Puffer </option>
632: <option value="3" selected> Snipey </option>
633: <option value="4"> Max </option>
634: <option value="5"> Firebot </option>
635: </select>
636: </p></pre>
637:
638: </div><div class="example">
639:
640: <p>Here, the user is offered a set of options from which he can
641: select any number. By default, all five options are selected.</p>
642:
643: <pre><p>
644: <label for="allowedunits">Select unit types to enable on this map:</label>
645: <select id="allowedunits" name="allowedunits" multiple>
646: <option value="1" selected> Miner </option>
647: <option value="2" selected> Puffer </option>
648: <option value="3" selected> Snipey </option>
649: <option value="4" selected> Max </option>
650: <option value="5" selected> Firebot </option>
651: </select>
652: </p></pre>
653:
1.202 mike 654: </div><h4 id="the-datalist-element"><span class="secno">4.10.10 </span>The <dfn><code>datalist</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.415 mike 655: <dd><a href="content-models.html#flow-content" id="flow-content_127">Flow content</a>.</dd>
656: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_143">Phrasing content</a>.</dd>
1.203 mike 657: <dt>Contexts in which this element can be used:</dt>
1.415 mike 658: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_144">phrasing content</a> is expected.</dd>
1.9 mike 659: <dt>Content model:</dt>
1.415 mike 660: <dd>Either: <a href="content-models.html#phrasing-content" id="phrasing-content_145">phrasing content</a>.</dd>
661: <dd>Or: Zero or more <code><a href="#the-option-element" id="option_19">option</a></code> elements.</dd>
1.9 mike 662: <dt>Content attributes:</dt>
1.415 mike 663: <dd><a href="elements.html#global-attributes" id="global-attributes_91">Global attributes</a></dd>
1.9 mike 664: <dt>DOM interface:</dt>
665: <dd>
1.415 mike 666: <pre class="idl">interface <dfn id="htmldatalistelement">HTMLDataListElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_102">HTMLElement</a> {
667: readonly attribute <a href="urls.html#htmlcollection" id="htmlcollection_35">HTMLCollection</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-datalist-options" title='Read about this "options" reference in the full HTML5 spec.'>options</a>;
1.9 mike 668: };</pre>
669: </dd>
1.415 mike 670: </dl><p>The <code><a href="#the-datalist-element" id="datalist_13">datalist</a></code> element represents a set of
671: <code><a href="#the-option-element" id="option_20">option</a></code> elements that represent predefined options for
1.9 mike 672: other controls. The contents of the element represents fallback
1.415 mike 673: content for legacy user agents, intermixed with <code><a href="#the-option-element" id="option_21">option</a></code>
1.9 mike 674: elements that represent the predefined options. In the rendering,
1.415 mike 675: the <code><a href="#the-datalist-element" id="datalist_14">datalist</a></code> element <a class="full-spec-link" href="http://dev.w3.org/html5/spec/rendering.html#represents" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a>
676: nothing.<p>The <code><a href="#the-datalist-element" id="datalist_15">datalist</a></code> element is hooked up to an
677: <code><a href="the-input-element.html#the-input-element" id="input_121">input</a></code> element using the <code title="attr-input-list"><a href="common-input-element-attributes.html#attr-input-list" id="list_29">list</a></code> attribute on the
678: <code><a href="the-input-element.html#the-input-element" id="input_122">input</a></code> element.<p>Each <code><a href="#the-option-element" id="option_22">option</a></code> element that is a descendant of the
679: <code><a href="#the-datalist-element" id="datalist_16">datalist</a></code> element, that is not <a href="#concept-option-disabled" id="concept-option-disabled_1" title="concept-option-disabled">disabled</a>, and whose <a href="#concept-option-value" id="concept-option-value_1" title="concept-option-value">value</a> is a string that isn't the
680: empty string, represents a suggestion. Each suggestion has a <a href="#concept-option-value" id="concept-option-value_2" title="concept-option-value">value</a> and a <a href="#concept-option-label" id="concept-option-label_0" title="concept-option-label">label</a>.
1.9 mike 681:
1.162 mike 682: <dl class="domintro"><dt><var title="">datalist</var> . <code title="dom-datalist-options"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-datalist-options" title='Read about this "options" reference in the full HTML5 spec.'>options</a></code></dt>
1.9 mike 683:
684: <dd>
1.415 mike 685: <p>Returns an <code><a href="urls.html#htmlcollection" id="htmlcollection_36">HTMLCollection</a></code> of the <code>options</code> elements of the table.</p>
1.9 mike 686: </dd>
687:
1.202 mike 688: </dl><h4 id="the-optgroup-element"><span class="secno">4.10.11 </span>The <dfn><code>optgroup</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.9 mike 689: <dd>None.</dd>
1.203 mike 690: <dt>Contexts in which this element can be used:</dt>
1.415 mike 691: <dd>As a child of a <code><a href="#the-select-element" id="select_32">select</a></code> element.</dd>
1.9 mike 692: <dt>Content model:</dt>
1.415 mike 693: <dd>Zero or more <code><a href="#the-option-element" id="option_23">option</a></code> elements.</dd>
1.9 mike 694: <dt>Content attributes:</dt>
1.415 mike 695: <dd><a href="elements.html#global-attributes" id="global-attributes_92">Global attributes</a></dd>
696: <dd><code title="attr-optgroup-disabled"><a href="#attr-optgroup-disabled" id="disabled_3">disabled</a></code></dd>
697: <dd><code title="attr-optgroup-label"><a href="#attr-optgroup-label" id="label_31">label</a></code></dd>
1.9 mike 698: <dt>DOM interface:</dt>
699: <dd>
1.415 mike 700: <pre class="idl">interface <dfn id="htmloptgroupelement">HTMLOptGroupElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_103">HTMLElement</a> {
1.162 mike 701: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-optgroup-disabled" title='Read about this "disabled" reference in the full HTML5 spec.'>disabled</a>;
702: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-optgroup-label" title='Read about this "label" reference in the full HTML5 spec.'>label</a>;
1.9 mike 703: };</pre>
704: </dd>
1.415 mike 705: </dl><p>The <code><a href="#the-optgroup-element" id="optgroup_7">optgroup</a></code> element <a class="full-spec-link" href="http://dev.w3.org/html5/spec/rendering.html#represents" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a group of
706: <code><a href="#the-option-element" id="option_24">option</a></code> elements with a common label.<p>The element's group of <code><a href="#the-option-element" id="option_25">option</a></code> elements consists of
707: the <code><a href="#the-option-element" id="option_26">option</a></code> elements that are children of the
708: <code><a href="#the-optgroup-element" id="optgroup_8">optgroup</a></code> element.<p>The <dfn id="attr-optgroup-disabled" title="attr-optgroup-disabled"><code>disabled</code></dfn> attribute
709: is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute_15">boolean attribute</a> and can be used to <a href="#concept-option-disabled" id="concept-option-disabled_2" title="concept-option-disabled">disable</a> a group of
710: <code><a href="#the-option-element" id="option_27">option</a></code> elements together.<p>The <dfn id="attr-optgroup-label" title="attr-optgroup-label"><code>label</code></dfn>
1.9 mike 711: attribute must be specified. Its value gives the name of the group,
1.160 mike 712: for the purposes of the user interface. <div class="example">
1.9 mike 713:
714: <p>The following snippet shows how a set of lessons from three
1.415 mike 715: courses could be offered in a <code><a href="#the-select-element" id="select_33">select</a></code> drop-down
1.9 mike 716: widget:</p>
717:
718: <pre><form action="courseselector.dll" method="get">
719: <p>Which course would you like to watch today?
720: <p><label>Course:
721: <select name="c">
722: <optgroup label="8.01 Physics I: Classical Mechanics">
723: <option value="8.01.1">Lecture 01: Powers of Ten
724: <option value="8.01.2">Lecture 02: 1D Kinematics
725: <option value="8.01.3">Lecture 03: Vectors
726: <optgroup label="8.02 Electricity and Magnestism">
727: <option value="8.02.1">Lecture 01: What holds our world together?
728: <option value="8.02.2">Lecture 02: Electric Field
729: <option value="8.02.3">Lecture 03: Electric Flux
730: <optgroup label="8.03 Physics III: Vibrations and Waves">
731: <option value="8.03.1">Lecture 01: Periodic Phenomenon
732: <option value="8.03.2">Lecture 02: Beats
733: <option value="8.03.3">Lecture 03: Forced Oscillations with Damping
734: </select>
735: </label>
1.320 mike 736: <p><input type=submit value="▶ Play">
1.9 mike 737: </form></pre>
738:
1.202 mike 739: </div><h4 id="the-option-element"><span class="secno">4.10.12 </span>The <dfn><code>option</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.9 mike 740: <dd>None.</dd>
1.203 mike 741: <dt>Contexts in which this element can be used:</dt>
1.415 mike 742: <dd>As a child of a <code><a href="#the-select-element" id="select_34">select</a></code> element.</dd>
743: <dd>As a child of a <code><a href="#the-datalist-element" id="datalist_17">datalist</a></code> element.</dd>
744: <dd>As a child of an <code><a href="#the-optgroup-element" id="optgroup_9">optgroup</a></code> element.</dd>
1.9 mike 745: <dt>Content model:</dt>
1.415 mike 746: <dd><a href="content-models.html#text-content" id="text-content_5" title="text content">Text</a>.</dd>
1.9 mike 747: <dt>Content attributes:</dt>
1.415 mike 748: <dd><a href="elements.html#global-attributes" id="global-attributes_93">Global attributes</a></dd>
749: <dd><code title="attr-option-disabled"><a href="#attr-option-disabled" id="disabled_6">disabled</a></code></dd>
750: <dd><code title="attr-option-label"><a href="#attr-option-label" id="label_33">label</a></code></dd>
751: <dd><code title="attr-option-selected"><a href="#attr-option-selected" id="selected_0">selected</a></code></dd>
752: <dd><code title="attr-option-value"><a href="#attr-option-value" id="value_34">value</a></code></dd>
1.9 mike 753: <dt>DOM interface:</dt>
754: <dd>
1.162 mike 755: <pre class="idl">[NamedConstructor=<a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option" title='Read about this "Option" reference in the full HTML5 spec.'>Option</a>(),
756: NamedConstructor=<a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-t" title='Read about this "Option" reference in the full HTML5 spec.'>Option</a>(in DOMString text),
757: NamedConstructor=<a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-tv" title='Read about this "Option" reference in the full HTML5 spec.'>Option</a>(in DOMString text, in DOMString value),
758: NamedConstructor=<a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-tvd" title='Read about this "Option" reference in the full HTML5 spec.'>Option</a>(in DOMString text, in DOMString value, in boolean defaultSelected),
759: NamedConstructor=<a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-tvds" title='Read about this "Option" reference in the full HTML5 spec.'>Option</a>(in DOMString text, in DOMString value, in boolean defaultSelected, in boolean selected)]
1.415 mike 760: interface <dfn id="htmloptionelement">HTMLOptionElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_104">HTMLElement</a> {
1.162 mike 761: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-disabled" title='Read about this "disabled" reference in the full HTML5 spec.'>disabled</a>;
1.415 mike 762: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement_7">HTMLFormElement</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-form" title='Read about this "form" reference in the full HTML5 spec.'>form</a>;
1.162 mike 763: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-label" title='Read about this "label" reference in the full HTML5 spec.'>label</a>;
764: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-defaultselected" title='Read about this "defaultSelected" reference in the full HTML5 spec.'>defaultSelected</a>;
765: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-selected" title='Read about this "selected" reference in the full HTML5 spec.'>selected</a>;
766: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-value" title='Read about this "value" reference in the full HTML5 spec.'>value</a>;
1.9 mike 767:
1.162 mike 768: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-text" title='Read about this "text" reference in the full HTML5 spec.'>text</a>;
769: readonly attribute long <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-index" title='Read about this "index" reference in the full HTML5 spec.'>index</a>;
1.9 mike 770: };</pre>
771: </dd>
1.415 mike 772: </dl><p>The <code><a href="#the-option-element" id="option_28">option</a></code> element <a class="full-spec-link" href="http://dev.w3.org/html5/spec/rendering.html#represents" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> an option
773: in a <code><a href="#the-select-element" id="select_35">select</a></code> element or as part of a list of suggestions
774: in a <code><a href="#the-datalist-element" id="datalist_18">datalist</a></code> element.<p>In certain circumstances described in the definition of the
775: <code><a href="#the-select-element" id="select_36">select</a></code> element, an <code><a href="#the-option-element" id="option_29">option</a></code> element can be a
776: <code><a href="#the-select-element" id="select_37">select</a></code> element's <a href="#placeholder-label-option" id="placeholder-label-option_0">placeholder label option</a>.
777: A <a href="#placeholder-label-option" id="placeholder-label-option_1">placeholder label option</a> does not represent an actual
778: option, but instead represents a label for the <code><a href="#the-select-element" id="select_38">select</a></code>
1.160 mike 779: control.<p>The <dfn id="attr-option-disabled" title="attr-option-disabled"><code>disabled</code></dfn>
1.415 mike 780: attribute is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute_16">boolean attribute</a>. An
781: <code><a href="#the-option-element" id="option_30">option</a></code> element is <dfn id="concept-option-disabled" title="concept-option-disabled">disabled</dfn> if its <code title="attr-option-disabled"><a href="#attr-option-disabled" id="disabled_7">disabled</a></code> attribute is present or
782: if it is a child of an <code><a href="#the-optgroup-element" id="optgroup_10">optgroup</a></code> element whose <code title="attr-optgroup-disabled"><a href="#attr-optgroup-disabled" id="disabled_4">disabled</a></code> attribute is
1.160 mike 783: present.<p>The <dfn id="attr-option-label" title="attr-option-label"><code>label</code></dfn>
1.415 mike 784: attribute provides a label for element. The <dfn id="concept-option-label" title="concept-option-label">label</dfn> of an <code><a href="#the-option-element" id="option_31">option</a></code>
785: element is the value of the <code title="attr-option-label"><a href="#attr-option-label" id="label_34">label</a></code> attribute, if there is one,
1.162 mike 786: or the <code><a class="full-spec-link" href="http://dev.w3.org/html5/spec/infrastructure.html#textcontent" title='Read about this "textContent" reference in the full HTML5 spec.'>textContent</a></code> of the element, if there isn't.<p>The <dfn id="attr-option-value" title="attr-option-value"><code>value</code></dfn>
1.415 mike 787: attribute provides a value for element. The <dfn id="concept-option-value" title="concept-option-value">value</dfn> of an <code><a href="#the-option-element" id="option_32">option</a></code>
788: element is the value of the <code title="attr-option-value"><a href="#attr-option-value" id="value_35">value</a></code> attribute, if there is one,
1.162 mike 789: or the <code><a class="full-spec-link" href="http://dev.w3.org/html5/spec/infrastructure.html#textcontent" title='Read about this "textContent" reference in the full HTML5 spec.'>textContent</a></code> of the element, if there isn't.<p>The <dfn id="attr-option-selected" title="attr-option-selected"><code>selected</code></dfn>
1.415 mike 790: attribute is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute_17">boolean attribute</a>. It represents the
1.298 mike 791: default <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#concept-option-selectedness" title='Read about this "selectedness" reference in the full HTML5 spec.'>selectedness</a> of the
1.415 mike 792: element.<p>A <code><a href="#the-select-element" id="select_39">select</a></code> element whose <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple_39">multiple</a></code> attribute is not
793: specified must not have more than one descendant <code><a href="#the-option-element" id="option_33">option</a></code>
794: element with its <code title="attr-option-selected"><a href="#attr-option-selected" id="selected_1">selected</a></code>
1.162 mike 795: attribute set.<dl class="domintro"><dt><var title="">option</var> . <code title="dom-option-selected"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-selected" title='Read about this "selected" reference in the full HTML5 spec.'>selected</a></code></dt>
1.9 mike 796:
797: <dd>
798:
799: <p>Returns true if the element is selected, and false otherwise.</p>
800:
1.202 mike 801: <p>Can be set, to override the current state of the element.</p>
802:
1.9 mike 803: </dd>
804:
1.162 mike 805: <dt><var title="">option</var> . <code title="dom-option-index"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-index" title='Read about this "index" reference in the full HTML5 spec.'>index</a></code></dt>
1.9 mike 806:
807: <dd>
808:
1.415 mike 809: <p>Returns the index of the element in its <code><a href="#the-select-element" id="select_40">select</a></code>
1.162 mike 810: element's <code title="dom-select-options"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-options" title='Read about this "options" reference in the full HTML5 spec.'>options</a></code>
1.9 mike 811: list.</p>
812:
813: </dd>
814:
1.162 mike 815: <dt><var title="">option</var> . <code title="dom-option-form"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-form" title='Read about this "form" reference in the full HTML5 spec.'>form</a></code></dt>
1.9 mike 816:
817: <dd>
818:
1.415 mike 819: <p>Returns the element's <code><a href="forms.html#the-form-element" id="form_22">form</a></code> element, if any, or
1.9 mike 820: null otherwise.</p>
821:
822: </dd>
823:
1.162 mike 824: <dt><var title="">option</var> . <code title="dom-option-text"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-text" title='Read about this "text" reference in the full HTML5 spec.'>text</a></code></dt>
1.11 mike 825:
826: <dd>
827:
1.206 mike 828: <p>Same as <code><a class="full-spec-link" href="http://dev.w3.org/html5/spec/infrastructure.html#textcontent" title='Read about this "textContent" reference in the full HTML5 spec.'>textContent</a></code>, except that spaces are collapsed.</p>
1.11 mike 829:
830: </dd>
831:
1.162 mike 832: <dt><var title="">option</var> = new <code title="dom-option"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option" title='Read about this "Option" reference in the full HTML5 spec.'>Option</a></code>( [ <var title="">text</var> [, <var title="">value</var> [, <var title="">defaultSelected</var> [, <var title="">selected</var> ] ] ] ] )</dt>
1.9 mike 833:
834: <dd>
835:
1.415 mike 836: <p>Returns a new <code><a href="#the-option-element" id="option_34">option</a></code> element.</p>
1.9 mike 837:
838: <p>The <var title="">text</var> argument sets the contents of the element.</p>
1.415 mike 839: <p>The <var title="">value</var> argument sets the <code title="attr-option-value"><a href="#attr-option-value" id="value_36">value</a></code> attribute.</p>
840: <p>The <var title="">defaultSelected</var> argument sets the <code title="attr-option-selected"><a href="#attr-option-selected" id="selected_2">selected</a></code> attribute.</p>
1.9 mike 841: <p>The <var title="">selected</var> argument sets whether or not the element is selected. If it is omitted, even if the <var title="">defaultSelected</var> argument is true, the element is not selected.</p>
842:
843: </dd>
844:
1.202 mike 845: </dl><h4 id="the-textarea-element"><span class="secno">4.10.13 </span>The <dfn><code>textarea</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.415 mike 846: <dd><a href="content-models.html#flow-content" id="flow-content_128">Flow content</a>.</dd>
847: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_146">Phrasing content</a>.</dd>
848: <dd><a href="content-models.html#interactive-content" id="interactive-content_16">Interactive content</a>.</dd>
849: <dd><a href="forms.html#category-listed" id="category-listed_7" title="category-listed">Listed</a>, <a href="forms.html#category-label" id="category-label_5" title="category-label">labelable</a>, <a href="forms.html#category-submit" id="category-submit_6" title="category-submit">submittable</a>, and <a href="forms.html#category-reset" id="category-reset_3" title="category-reset">resettable</a> <a href="forms.html#form-associated-element" id="form-associated-element_11">form-associated element</a>.</dd>
1.203 mike 850: <dt>Contexts in which this element can be used:</dt>
1.415 mike 851: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_147">phrasing content</a> is expected.</dd>
1.9 mike 852: <dt>Content model:</dt>
1.415 mike 853: <dd><a href="content-models.html#text-content" id="text-content_6" title="text content">Text</a>.</dd>
1.9 mike 854: <dt>Content attributes:</dt>
1.415 mike 855: <dd><a href="elements.html#global-attributes" id="global-attributes_94">Global attributes</a></dd>
856: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus_5">autofocus</a></code></dd>
1.413 mike 857: <dd><code title="attr-textarea-cols"><a href="#attr-textarea-cols" id="cols">cols</a></code></dd>
1.415 mike 858: <dd><code title="attr-textarea-dirname"><a href="#attr-textarea-dirname" id="dirname_26">dirname</a></code></dd>
859: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled_17">disabled</a></code></dd>
860: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_53">form</a></code></dd>
861: <dd><code title="attr-textarea-maxlength"><a href="#attr-textarea-maxlength" id="maxlength_27">maxlength</a></code></dd>
862: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name_41">name</a></code></dd>
863: <dd><code title="attr-textarea-placeholder"><a href="#attr-textarea-placeholder" id="placeholder_28">placeholder</a></code></dd>
864: <dd><code title="attr-textarea-readonly"><a href="#attr-textarea-readonly" id="readonly_41">readonly</a></code></dd>
865: <dd><code title="attr-textarea-required"><a href="#attr-textarea-required" id="required_32">required</a></code></dd>
1.413 mike 866: <dd><code title="attr-textarea-rows"><a href="#attr-textarea-rows" id="rows">rows</a></code></dd>
867: <dd><code title="attr-textarea-wrap"><a href="#attr-textarea-wrap" id="wrap">wrap</a></code></dd>
1.9 mike 868: <dt>DOM interface:</dt>
869: <dd>
1.415 mike 870: <pre class="idl">interface <dfn id="htmltextareaelement">HTMLTextAreaElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_105">HTMLElement</a> {
1.162 mike 871: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-autofocus" title='Read about this "autofocus" reference in the full HTML5 spec.'>autofocus</a>;
872: attribute unsigned long <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-textarea-cols" title='Read about this "cols" reference in the full HTML5 spec.'>cols</a>;
1.412 mike 873: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-textarea-dirname" title='Read about this "dirName" reference in the full HTML5 spec.'>dirName</a>;
1.162 mike 874: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-disabled" title='Read about this "disabled" reference in the full HTML5 spec.'>disabled</a>;
1.415 mike 875: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement_8">HTMLFormElement</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fae-form" title='Read about this "form" reference in the full HTML5 spec.'>form</a>;
1.162 mike 876: attribute long <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-textarea-maxlength" title='Read about this "maxLength" reference in the full HTML5 spec.'>maxLength</a>;
877: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-name" title='Read about this "name" reference in the full HTML5 spec.'>name</a>;
878: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-textarea-placeholder" title='Read about this "placeholder" reference in the full HTML5 spec.'>placeholder</a>;
879: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-textarea-readonly" title='Read about this "readOnly" reference in the full HTML5 spec.'>readOnly</a>;
880: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-textarea-required" title='Read about this "required" reference in the full HTML5 spec.'>required</a>;
881: attribute unsigned long <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-textarea-rows" title='Read about this "rows" reference in the full HTML5 spec.'>rows</a>;
882: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-textarea-wrap" title='Read about this "wrap" reference in the full HTML5 spec.'>wrap</a>;
883:
884: readonly attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-textarea-type" title='Read about this "type" reference in the full HTML5 spec.'>type</a>;
885: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-textarea-defaultvalue" title='Read about this "defaultValue" reference in the full HTML5 spec.'>defaultValue</a>;
886: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-textarea-value" title='Read about this "value" reference in the full HTML5 spec.'>value</a>;
887: readonly attribute unsigned long <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-textarea-textlength" title='Read about this "textLength" reference in the full HTML5 spec.'>textLength</a>;
888:
889: readonly attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-willvalidate" title='Read about this "willValidate" reference in the full HTML5 spec.'>willValidate</a>;
890: readonly attribute <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#validitystate" title='Read about this "ValidityState" reference in the full HTML5 spec.'>ValidityState</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-validity" title='Read about this "validity" reference in the full HTML5 spec.'>validity</a>;
891: readonly attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-validationmessage" title='Read about this "validationMessage" reference in the full HTML5 spec.'>validationMessage</a>;
892: boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-checkvalidatity" title='Read about this "checkValidity" reference in the full HTML5 spec.'>checkValidity</a>();
893: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-setcustomvalidity" title='Read about this "setCustomValidity" reference in the full HTML5 spec.'>setCustomValidity</a>(in DOMString error);
894:
895: readonly attribute <a class="full-spec-link" href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/forms.html#dom-lfe-labels" title='Read about this "labels" reference in the full HTML5 spec.'>labels</a>;
896:
1.412 mike 897: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-textarea-input-select" title='Read about this "select" reference in the full HTML5 spec.'>select</a>();
898: attribute unsigned long <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-textarea-input-selectionstart" title='Read about this "selectionStart" reference in the full HTML5 spec.'>selectionStart</a>;
899: attribute unsigned long <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-textarea-input-selectionend" title='Read about this "selectionEnd" reference in the full HTML5 spec.'>selectionEnd</a>;
900: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-textarea-input-setselectionrange" title='Read about this "setSelectionRange" reference in the full HTML5 spec.'>setSelectionRange</a>(in unsigned long start, in unsigned long end);
1.9 mike 901: };</pre>
902: </dd>
1.415 mike 903: </dl><p>The <code><a href="#the-textarea-element" id="textarea_24">textarea</a></code> element <a class="full-spec-link" href="http://dev.w3.org/html5/spec/rendering.html#represents" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a
1.9 mike 904: multiline plain text edit control. The contents of the control represent the
1.388 mike 905: control's default value.<p>The <dfn id="attr-textarea-readonly" title="attr-textarea-readonly"><code>readonly</code></dfn> attribute
1.415 mike 906: is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute_18">boolean attribute</a> used to control whether the text
1.160 mike 907: can be edited by the user or not.<p>The <dfn id="attr-textarea-cols" title="attr-textarea-cols"><code>cols</code></dfn>
1.9 mike 908: attribute specifies the expected maximum number of characters per
1.415 mike 909: line. If the <code title="attr-textarea-cols"><a href="#attr-textarea-cols" id="cols_0">cols</a></code> attribute
910: is specified, its value must be a <a href="common-microsyntaxes.html#valid-non-negative-integer" id="valid-non-negative-integer_11">valid non-negative
1.160 mike 911: integer</a> greater than zero. <p>The <dfn id="attr-textarea-rows" title="attr-textarea-rows"><code>rows</code></dfn>
1.415 mike 912: attribute specifies the number of lines to show. If the <code title="attr-textarea-rows"><a href="#attr-textarea-rows" id="rows_0">rows</a></code> attribute is specified, its
913: value must be a <a href="common-microsyntaxes.html#valid-non-negative-integer" id="valid-non-negative-integer_12">valid non-negative integer</a> greater than
1.160 mike 914: zero. <p>The <dfn id="attr-textarea-wrap" title="attr-textarea-wrap"><code>wrap</code></dfn>
1.415 mike 915: attribute is an <a href="common-microsyntaxes.html#enumerated-attribute" id="enumerated-attribute_10">enumerated attribute</a> with two keywords
1.9 mike 916: and states: the <dfn id="attr-textarea-wrap-soft" title="attr-textarea-wrap-soft"><code>soft</code></dfn> keyword
1.415 mike 917: which maps to the <a href="#attr-textarea-wrap-soft-state" id="attr-textarea-wrap-soft-state_0" title="attr-textarea-wrap-soft-state">Soft</a> state, and the
1.9 mike 918: <dfn id="attr-textarea-wrap-hard" title="attr-textarea-wrap-hard"><code>hard</code></dfn> keyword
1.415 mike 919: which maps to the <a href="#attr-textarea-wrap-hard-state" id="attr-textarea-wrap-hard-state_0" title="attr-textarea-wrap-hard-state">Hard</a> state. The
920: <i>missing value default</i> is the <a href="#attr-textarea-wrap-soft-state" id="attr-textarea-wrap-soft-state_1" title="attr-textarea-wrap-soft-state">Soft</a> state.<p>The <dfn id="attr-textarea-wrap-soft-state" title="attr-textarea-wrap-soft-state">Soft</dfn> state
921: indicates that the text in the <code><a href="#the-textarea-element" id="textarea_25">textarea</a></code> is not to be
1.198 mike 922: wrapped when it is submitted (though it can still be wrapped in the
923: rendering).<p>The <dfn id="attr-textarea-wrap-hard-state" title="attr-textarea-wrap-hard-state">Hard</dfn> state
1.415 mike 924: indicates that the text in the <code><a href="#the-textarea-element" id="textarea_26">textarea</a></code> is to have
1.198 mike 925: newlines added by the user agent so that the text is wrapped when it
1.415 mike 926: is submitted.<p>If the element's <code title="attr-textarea-wrap"><a href="#attr-textarea-wrap" id="wrap_0">wrap</a></code>
927: attribute is in the <a href="#attr-textarea-wrap-hard-state" id="attr-textarea-wrap-hard-state_1" title="attr-textarea-wrap-hard-state">Hard</a> state, the <code title="attr-textarea-cols"><a href="#attr-textarea-cols" id="cols_1">cols</a></code> attribute must be
1.412 mike 928: specified.<p>The <dfn id="attr-textarea-maxlength" title="attr-textarea-maxlength"><code>maxlength</code></dfn>
1.415 mike 929: attribute is a <a href="association-of-controls-and-forms.html#attr-fe-maxlength" id="attr-fe-maxlength_1" title="attr-fe-maxlength">form control <code title="">maxlength</code> attribute</a> controlled by the
930: <code><a href="#the-textarea-element" id="textarea_27">textarea</a></code> element's <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#concept-textarea-dirty" title='Read about this "dirty value flag" reference in the full HTML5 spec.'>dirty value flag</a>.<p>If the <code><a href="#the-textarea-element" id="textarea_28">textarea</a></code> element has a <a href="association-of-controls-and-forms.html#maximum-allowed-value-length" id="maximum-allowed-value-length_2">maximum allowed
1.9 mike 931: value length</a>, then the element's children must be such that
1.162 mike 932: the <a class="full-spec-link" href="http://dev.w3.org/html5/spec/common-microsyntaxes.html#code-point-length" title='Read about this "code-point length" reference in the full HTML5 spec.'>code-point length</a> of the value of the element's
933: <code><a class="full-spec-link" href="http://dev.w3.org/html5/spec/infrastructure.html#textcontent" title='Read about this "textContent" reference in the full HTML5 spec.'>textContent</a></code> IDL attribute is equal to or less than the
1.415 mike 934: element's <a href="association-of-controls-and-forms.html#maximum-allowed-value-length" id="maximum-allowed-value-length_3">maximum allowed value length</a>.<p>The <dfn id="attr-textarea-required" title="attr-textarea-required"><code>required</code></dfn> attribute
935: is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute_19">boolean attribute</a>. When specified, the user will
1.412 mike 936: be required to enter a value before submitting the form.<p>The <dfn id="attr-textarea-placeholder" title="attr-textarea-placeholder"><code>placeholder</code></dfn>
1.9 mike 937: attribute represents a hint (a word or short phrase) intended to aid
938: the user with data entry. A hint could be a sample value or a brief
939: description of the expected format. The attribute, if specified,
940: must have a value that contains no U+000A LINE FEED (LF) or U+000D
1.415 mike 941: CARRIAGE RETURN (CR) characters.<p class="note">For a longer hint or other advisory text, the <code title="attr-title"><a href="elements.html#the-title-attribute" id="title_26">title</a></code> attribute is more appropriate.<p>The <code title="attr-textarea-placeholder"><a href="#attr-textarea-placeholder" id="placeholder_29">placeholder</a></code>
1.9 mike 942: attribute should not be used as an alternative to a
1.415 mike 943: <code><a href="forms.html#the-label-element" id="label_20">label</a></code>.<p>The <dfn id="attr-textarea-dirname" title="attr-textarea-dirname"><code>dirname</code></dfn>
944: attribute is a <a href="association-of-controls-and-forms.html#form-control-dirname-attribute" id="form-control-dirname-attribute_1">form control <code title="">dirname</code>
945: attribute</a>.<p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_54">form</a></code> attribute is used to
946: explicitly associate the <code><a href="#the-textarea-element" id="textarea_29">textarea</a></code> element with its
947: <a href="association-of-controls-and-forms.html#form-owner" id="form-owner_10">form owner</a>. The <code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name_42">name</a></code>
948: attribute represents the element's name. The <code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled_18">disabled</a></code> attribute is used to make
1.9 mike 949: the control non-interactive and to prevent its value from being
1.415 mike 950: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus_6">autofocus</a></code>
1.388 mike 951: attribute controls focus.<dl class="domintro"><dt><var title="">textarea</var> . <code title="attr-textarea-type">type</code></dt>
1.9 mike 952:
953: <dd>
954:
955: <p>Returns the string "<code title="">textarea</code>".</p>
956:
957: </dd>
958:
959: <dt><var title="">textarea</var> . <code title="attr-textarea-value">value</code></dt>
960:
961: <dd>
962:
963: <p>Returns the current value of the element.</p>
964:
965: <p>Can be set, to change the value.</p>
966:
967: </dd>
968:
969: </dl><div class="example">
970:
1.415 mike 971: <p>Here is an example of a <code><a href="#the-textarea-element" id="textarea_30">textarea</a></code> being used for
1.9 mike 972: unrestricted free-form text input in a form:</p>
973:
974: <pre><p>If you have any comments, please let us know: <textarea cols=80 name=comments></textarea></p></pre>
975:
1.396 mike 976: <p>To specify a maximum length for the comments, one can use
1.415 mike 977: the <code title="attr-textarea-maxlength"><a href="#attr-textarea-maxlength" id="maxlength_28">maxlength</a></code>
1.323 mike 978: attribute:</p>
979:
980: <pre><p>If you have any short comments, please let us know: <textarea cols=80 name=comments maxlength=200></textarea></p></pre>
981:
982: <p>To give a default value, text can be included inside the element:</p>
983:
984: <pre><p>If you have any comments, please let us know: <textarea cols=80 name=comments>You rock!</textarea></p></pre>
985:
1.415 mike 986: <p>To have the browser submit <a href="elements.html#the-directionality" id="the-directionality_9">the directionality</a> of
987: the element along with the value, the <code title="attr-textarea-dirname"><a href="#attr-textarea-dirname" id="dirname_27">dirname</a></code> attribute can be
1.323 mike 988: specified:</p>
989:
990: <pre><p>If you have any comments, please let us know (you may use either English or Hebrew for your comments):
991: <textarea cols=80 name=comments dirname=comments.dir></textarea></p></pre>
992:
1.202 mike 993: </div><h4 id="the-keygen-element"><span class="secno">4.10.14 </span>The <dfn><code>keygen</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.415 mike 994: <dd><a href="content-models.html#flow-content" id="flow-content_129">Flow content</a>.</dd>
995: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_148">Phrasing content</a>.</dd>
996: <dd><a href="content-models.html#interactive-content" id="interactive-content_17">Interactive content</a>.</dd>
997: <dd><a href="forms.html#category-listed" id="category-listed_8" title="category-listed">Listed</a>, <a href="forms.html#category-label" id="category-label_6" title="category-label">labelable</a>, <a href="forms.html#category-submit" id="category-submit_7" title="category-submit">submittable</a>, and <a href="forms.html#category-reset" id="category-reset_4" title="category-reset">resettable</a> <a href="forms.html#form-associated-element" id="form-associated-element_12">form-associated element</a>.</dd>
1.203 mike 998: <dt>Contexts in which this element can be used:</dt>
1.415 mike 999: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_149">phrasing content</a> is expected.</dd>
1.9 mike 1000: <dt>Content model:</dt>
1001: <dd>Empty.</dd>
1002: <dt>Content attributes:</dt>
1.415 mike 1003: <dd><a href="elements.html#global-attributes" id="global-attributes_95">Global attributes</a></dd>
1004: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus_7">autofocus</a></code></dd>
1.413 mike 1005: <dd><code title="attr-keygen-challenge"><a href="#attr-keygen-challenge" id="challenge">challenge</a></code></dd>
1.415 mike 1006: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled_19">disabled</a></code></dd>
1007: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_55">form</a></code></dd>
1.413 mike 1008: <dd><code title="attr-keygen-keytype"><a href="#attr-keygen-keytype" id="keytype">keytype</a></code></dd>
1.415 mike 1009: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name_43">name</a></code></dd>
1.9 mike 1010: <dt>DOM interface:</dt>
1011: <dd>
1.415 mike 1012: <pre class="idl">interface <dfn id="htmlkeygenelement">HTMLKeygenElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_106">HTMLElement</a> {
1.162 mike 1013: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-autofocus" title='Read about this "autofocus" reference in the full HTML5 spec.'>autofocus</a>;
1014: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-keygen-challenge" title='Read about this "challenge" reference in the full HTML5 spec.'>challenge</a>;
1015: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-disabled" title='Read about this "disabled" reference in the full HTML5 spec.'>disabled</a>;
1.415 mike 1016: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement_9">HTMLFormElement</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fae-form" title='Read about this "form" reference in the full HTML5 spec.'>form</a>;
1.162 mike 1017: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-keygen-keytype" title='Read about this "keytype" reference in the full HTML5 spec.'>keytype</a>;
1018: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-name" title='Read about this "name" reference in the full HTML5 spec.'>name</a>;
1019:
1020: readonly attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-keygen-type" title='Read about this "type" reference in the full HTML5 spec.'>type</a>;
1021:
1022: readonly attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-willvalidate" title='Read about this "willValidate" reference in the full HTML5 spec.'>willValidate</a>;
1023: readonly attribute <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#validitystate" title='Read about this "ValidityState" reference in the full HTML5 spec.'>ValidityState</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-validity" title='Read about this "validity" reference in the full HTML5 spec.'>validity</a>;
1024: readonly attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-validationmessage" title='Read about this "validationMessage" reference in the full HTML5 spec.'>validationMessage</a>;
1025: boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-checkvalidatity" title='Read about this "checkValidity" reference in the full HTML5 spec.'>checkValidity</a>();
1026: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-setcustomvalidity" title='Read about this "setCustomValidity" reference in the full HTML5 spec.'>setCustomValidity</a>(in DOMString error);
1.9 mike 1027:
1.162 mike 1028: readonly attribute <a class="full-spec-link" href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/forms.html#dom-lfe-labels" title='Read about this "labels" reference in the full HTML5 spec.'>labels</a>;
1.9 mike 1029: };</pre>
1030: </dd>
1.415 mike 1031: </dl><p>The <code><a href="#the-keygen-element" id="keygen_12">keygen</a></code> element <a class="full-spec-link" href="http://dev.w3.org/html5/spec/rendering.html#represents" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a key
1.9 mike 1032: pair generator control. When the control's form is submitted, the
1033: private key is stored in the local keystore, and the public key is
1.160 mike 1034: packaged and sent to the server.<p>The <dfn id="attr-keygen-challenge" title="attr-keygen-challenge"><code>challenge</code></dfn> attribute
1.9 mike 1035: may be specified. Its value will be packaged with the submitted
1.160 mike 1036: key.<p>The <dfn id="attr-keygen-keytype" title="attr-keygen-keytype"><code>keytype</code></dfn>
1.415 mike 1037: attribute is an <a href="common-microsyntaxes.html#enumerated-attribute" id="enumerated-attribute_11">enumerated attribute</a>. The following
1.160 mike 1038: table lists the keywords and states for the attribute — the
1.9 mike 1039: keywords in the left column map to the states listed in the cell in
1040: the second column on the same row as the keyword. User agents are
1.26 mike 1041: not required to support these values, and must only recognize values
1.160 mike 1042: whose corresponding algorithms they support.<table><thead><tr><th> Keyword <th> State
1043: <tbody><tr><td> <code title="">rsa</code>
1044: <td> <i title="">RSA</i>
1045: </table><p>The <i>invalid value default</i> state is the <i title="">unknown</i> state. The <i>missing value default</i> state
1046: is the <i title="">RSA</i> state, if it is supported, or the <i title="">unknown</i> state otherwise.<p class="note">This specification does not specify what key types
1047: user agents are to support — it is possible for a user agent
1.415 mike 1048: to not support any key types at all.<p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_56">form</a></code> attribute is used to
1049: explicitly associate the <code><a href="#the-keygen-element" id="keygen_13">keygen</a></code> element with its
1050: <a href="association-of-controls-and-forms.html#form-owner" id="form-owner_11">form owner</a>. The <code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name_44">name</a></code>
1051: attribute represents the element's name. The <code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled_20">disabled</a></code> attribute is used to make
1.9 mike 1052: the control non-interactive and to prevent its value from being
1.415 mike 1053: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus_8">autofocus</a></code>
1.160 mike 1054: attribute controls focus.<dl class="domintro"><dt><var title="">keygen</var> . <code title="attr-keygen-type">type</code></dt>
1.9 mike 1055:
1056: <dd>
1057:
1058: <p>Returns the string "<code title="">keygen</code>".</p>
1059:
1060: </dd>
1061:
1062: </dl><p class="note">This specification does not specify how the private
1063: key generated is to be used. It is expected that after receiving the
1.162 mike 1064: <code><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#signedpublickeyandchallenge" title='Read about this "SignedPublicKeyAndChallenge" reference in the full HTML5 spec.'>SignedPublicKeyAndChallenge</a></code> (SPKAC) structure, the
1.9 mike 1065: server will generate a client certificate and offer it back to the
1066: user for download; this certificate, once downloaded and stored in
1067: the key store along with the private key, can then be used to
1.88 mike 1068: authenticate to services that use TLS and certificate
1.412 mike 1069: authentication.<div class="example">
1.9 mike 1070:
1071: <p>To generate a key pair, add the private key to the user's key
1072: store, and submit the public key to the server, markup such as the
1073: following can be used:</p>
1074:
1.22 mike 1075: <pre><form action="processkey.cgi" method="post" enctype="multipart/form-data">
1.9 mike 1076: <p><keygen name="key"></p>
1077: <p><input type=submit value="Submit key..."></p>
1078: </form></pre>
1079:
1080: <p>The server will then receive a form submission with a packaged
1081: RSA public key as the value of "<code title="">key</code>". This
1082: can then be used for various purposes, such as generating a client
1083: certificate, as mentioned above.</p>
1084:
1.202 mike 1085: </div><h4 id="the-output-element"><span class="secno">4.10.15 </span>The <dfn><code>output</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.415 mike 1086: <dd><a href="content-models.html#flow-content" id="flow-content_130">Flow content</a>.</dd>
1087: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_150">Phrasing content</a>.</dd>
1088: <dd><a href="forms.html#category-listed" id="category-listed_9" title="category-listed">Listed</a>, <a href="forms.html#category-label" id="category-label_7" title="category-label">labelable</a>, and <a href="forms.html#category-reset" id="category-reset_5" title="category-reset">resettable</a> <a href="forms.html#form-associated-element" id="form-associated-element_13">form-associated element</a>.</dd>
1.203 mike 1089: <dt>Contexts in which this element can be used:</dt>
1.415 mike 1090: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_151">phrasing content</a> is expected.</dd>
1.9 mike 1091: <dt>Content model:</dt>
1.415 mike 1092: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_152">Phrasing content</a>.</dd>
1.9 mike 1093: <dt>Content attributes:</dt>
1.415 mike 1094: <dd><a href="elements.html#global-attributes" id="global-attributes_96">Global attributes</a></dd>
1095: <dd><code title="attr-output-for"><a href="#attr-output-for" id="for_2">for</a></code></dd>
1096: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_57">form</a></code></dd>
1097: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name_45">name</a></code></dd>
1.9 mike 1098: <dt>DOM interface:</dt>
1099: <dd>
1.415 mike 1100: <pre class="idl">interface <dfn id="htmloutputelement">HTMLOutputElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_107">HTMLElement</a> {
1101: [PutForwards=<a class="full-spec-link" href="http://dev.w3.org/html5/spec/common-dom-interfaces.html#dom-domsettabletokenlist-value" title='Read about this "value" reference in the full HTML5 spec.'>value</a>] readonly attribute <a href="urls.html#domsettabletokenlist" id="domsettabletokenlist_5">DOMSettableTokenList</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-output-htmlfor" title='Read about this "htmlFor" reference in the full HTML5 spec.'>htmlFor</a>;
1102: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement_10">HTMLFormElement</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fae-form" title='Read about this "form" reference in the full HTML5 spec.'>form</a>;
1.162 mike 1103: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-name" title='Read about this "name" reference in the full HTML5 spec.'>name</a>;
1104:
1105: readonly attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-output-type" title='Read about this "type" reference in the full HTML5 spec.'>type</a>;
1106: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-output-defaultvalue" title='Read about this "defaultValue" reference in the full HTML5 spec.'>defaultValue</a>;
1107: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-output-value" title='Read about this "value" reference in the full HTML5 spec.'>value</a>;
1108:
1109: readonly attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-willvalidate" title='Read about this "willValidate" reference in the full HTML5 spec.'>willValidate</a>;
1110: readonly attribute <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#validitystate" title='Read about this "ValidityState" reference in the full HTML5 spec.'>ValidityState</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-validity" title='Read about this "validity" reference in the full HTML5 spec.'>validity</a>;
1111: readonly attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-validationmessage" title='Read about this "validationMessage" reference in the full HTML5 spec.'>validationMessage</a>;
1112: boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-checkvalidatity" title='Read about this "checkValidity" reference in the full HTML5 spec.'>checkValidity</a>();
1113: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-setcustomvalidity" title='Read about this "setCustomValidity" reference in the full HTML5 spec.'>setCustomValidity</a>(in DOMString error);
1.11 mike 1114:
1.162 mike 1115: readonly attribute <a class="full-spec-link" href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/forms.html#dom-lfe-labels" title='Read about this "labels" reference in the full HTML5 spec.'>labels</a>;
1.9 mike 1116: };</pre>
1117: </dd>
1.415 mike 1118: </dl><p>The <code><a href="#the-output-element" id="output_11">output</a></code> element <a class="full-spec-link" href="http://dev.w3.org/html5/spec/rendering.html#represents" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> the result of a
1.160 mike 1119: calculation.<p>The <dfn id="attr-output-for" title="attr-output-for"><code>for</code></dfn> content
1.9 mike 1120: attribute allows an explicit relationship to be made between the
1121: result of a calculation and the elements that represent the values
1122: that went into the calculation or that otherwise influenced the
1.415 mike 1123: calculation. The <code title="attr-output-for"><a href="#attr-output-for" id="for_3">for</a></code> attribute,
1124: if specified, must contain a string consisting of an <a href="common-microsyntaxes.html#unordered-set-of-unique-space-separated-tokens" id="unordered-set-of-unique-space-separated-tokens_2">unordered
1.265 mike 1125: set of unique space-separated tokens</a> that are
1.415 mike 1126: <a href="infrastructure.html#case-sensitive" id="case-sensitive_5">case-sensitive</a>, each of which must have the value of an
1127: <a href="elements.html#concept-id" id="concept-id_19" title="concept-id">ID</a> of an element in the same
1128: <code><a class="full-spec-link" href="http://dev.w3.org/html5/spec/infrastructure.html#document" title='Read about this "Document" reference in the full HTML5 spec.'>Document</a></code>.<p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_58">form</a></code> attribute is used to
1129: explicitly associate the <code><a href="#the-output-element" id="output_12">output</a></code> element with its
1130: <a href="association-of-controls-and-forms.html#form-owner" id="form-owner_12">form owner</a>. The <code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name_46">name</a></code>
1.162 mike 1131: attribute represents the element's name.<dl class="domintro"><dt><var title="">output</var> . <code title="dom-output-value"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-output-value" title='Read about this "value" reference in the full HTML5 spec.'>value</a></code> [ = <var title="">value</var> ]</dt>
1.9 mike 1132:
1133: <dd>
1134:
1135: <p>Returns the element's current value.</p>
1136:
1137: <p>Can be set, to change the value.</p>
1138:
1139: </dd>
1140:
1.162 mike 1141: <dt><var title="">output</var> . <code title="dom-output-defaultValue"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-output-defaultvalue" title='Read about this "defaultValue" reference in the full HTML5 spec.'>defaultValue</a></code> [ = <var title="">value</var> ]</dt>
1.9 mike 1142:
1143: <dd>
1144:
1145: <p>Returns the element's current default value.</p>
1146:
1147: <p>Can be set, to change the default value.</p>
1148:
1149: </dd>
1150:
1.162 mike 1151: <dt><var title="">output</var> . <code title="dom-output-type"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-output-type" title='Read about this "type" reference in the full HTML5 spec.'>type</a></code></dt>
1.9 mike 1152:
1153: <dd>
1154:
1155: <p>Returns the string "<code title="">output</code>".</p>
1156:
1157: </dd>
1158:
1159: </dl><div class="example">
1160:
1.415 mike 1161: <p>A simple calculator could use <code><a href="#the-output-element" id="output_13">output</a></code> for its
1.9 mike 1162: display of calculated results:</p>
1163:
1.388 mike 1164: <pre><form onsubmit="return false" oninput="o.value = a.valueAsNumber + b.valueAsNumber">
1.9 mike 1165: <input name=a type=number step=any> +
1166: <input name=b type=number step=any> =
1.388 mike 1167: <output name=o></output>
1.9 mike 1168: </form></pre>
1169:
1.390 mike 1170: </div><h4 id="the-progress-element"><span class="secno">4.10.16 </span>The <dfn><code>progress</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.415 mike 1171: <dd><a href="content-models.html#flow-content" id="flow-content_131">Flow content</a>.</dd>
1172: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_153">Phrasing content</a>.</dd>
1173: <dd><a href="forms.html#category-label" id="category-label_8" title="category-label">Labelable</a> <a href="forms.html#form-associated-element" id="form-associated-element_14">form-associated element</a>.</dd>
1.203 mike 1174: <dt>Contexts in which this element can be used:</dt>
1.415 mike 1175: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_154">phrasing content</a> is expected.</dd>
1.11 mike 1176: <dt>Content model:</dt>
1.415 mike 1177: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_155">Phrasing content</a>, but there must be no <code><a href="#the-progress-element" id="progress_8">progress</a></code> element descendants.</dd>
1.11 mike 1178: <dt>Content attributes:</dt>
1.415 mike 1179: <dd><a href="elements.html#global-attributes" id="global-attributes_97">Global attributes</a></dd>
1180: <dd><code title="attr-progress-value"><a href="#attr-progress-value" id="value_38">value</a></code></dd>
1181: <dd><code title="attr-progress-max"><a href="#attr-progress-max" id="max_36">max</a></code></dd>
1182: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_59">form</a></code></dd>
1.11 mike 1183: <dt>DOM interface:</dt>
1184: <dd>
1.415 mike 1185: <pre class="idl">interface <dfn id="htmlprogresselement">HTMLProgressElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_108">HTMLElement</a> {
1.197 mike 1186: attribute double <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-progress-value" title='Read about this "value" reference in the full HTML5 spec.'>value</a>;
1187: attribute double <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-progress-max" title='Read about this "max" reference in the full HTML5 spec.'>max</a>;
1188: readonly attribute double <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-progress-position" title='Read about this "position" reference in the full HTML5 spec.'>position</a>;
1.415 mike 1189: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement_11">HTMLFormElement</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fae-form" title='Read about this "form" reference in the full HTML5 spec.'>form</a>;
1.162 mike 1190: readonly attribute <a class="full-spec-link" href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/forms.html#dom-lfe-labels" title='Read about this "labels" reference in the full HTML5 spec.'>labels</a>;
1.11 mike 1191: };</pre>
1192: </dd>
1.415 mike 1193: </dl><p>The <code><a href="#the-progress-element" id="progress_9">progress</a></code> element <a class="full-spec-link" href="http://dev.w3.org/html5/spec/rendering.html#represents" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> the
1.11 mike 1194: completion progress of a task. The progress is either indeterminate,
1195: indicating that progress is being made but that it is not clear how
1.278 mike 1196: much more work remains to be done before the task is complete (e.g.
1197: because the task is waiting for a remote host to respond), or the
1198: progress is a number in the range zero to a maximum, giving the
1.160 mike 1199: fraction of work that has so far been completed.<p>There are two attributes that determine the current task
1.278 mike 1200: completion represented by the element. The <dfn id="attr-progress-value" title="attr-progress-value"><code>value</code></dfn> attribute
1201: specifies how much of the task has been completed, and the <dfn id="attr-progress-max" title="attr-progress-max"><code>max</code></dfn> attribute specifies
1202: how much work the task requires in total. The units are arbitrary
1203: and not specified.<p>Authors are encouraged to also include the current value and the
1.11 mike 1204: maximum value inline as text inside the element, so that the
1.160 mike 1205: progress is made available to users of legacy user agents.<div class="example">
1.11 mike 1206: <p>Here is a snippet of a Web application that shows the progress
1207: of some automated task:</p>
1208: <pre><section>
1209: <h2>Task Progress</h2>
1210: <p>Progress: <progress id="p" max=100><span>0</span>%</progress></p>
1211: <script>
1212: var progressBar = document.getElementById('p');
1213: function updateProgress(newValue) {
1214: progressBar.value = newValue;
1215: progressBar.getElementsByTagName('span')[0].textContent = newValue;
1216: }
1217: </script>
1218: </section></pre>
1219: <p>(The <code>updateProgress()</code> method in this example would
1220: be called by some other code on the page to update the actual
1221: progress bar as the task progressed.)</p>
1.415 mike 1222: </div><p>The <code title="attr-progress-value"><a href="#attr-progress-value" id="value_39">value</a></code> and <code title="attr-progress-max"><a href="#attr-progress-max" id="max_37">max</a></code> attributes, when present, must
1223: have values that are <a href="common-microsyntaxes.html#valid-floating-point-number" id="valid-floating-point-number_9" title="valid floating point number">valid
1224: floating point numbers</a>. The <code title="attr-progress-value"><a href="#attr-progress-value" id="value_40">value</a></code> attribute, if present, must
1.11 mike 1225: have a value equal to or greater than zero, and less than or equal
1.415 mike 1226: to the value of the <code title="attr-progress-max"><a href="#attr-progress-max" id="max_38">max</a></code>
1227: attribute, if present, or 1.0, otherwise. The <code title="attr-progress-max"><a href="#attr-progress-max" id="max_39">max</a></code> attribute, if present, must
1228: have a value greater than zero.<p class="note">The <code><a href="#the-progress-element" id="progress_10">progress</a></code> element is the wrong
1.11 mike 1229: element to use for something that is just a gauge, as opposed to
1230: task progress. For instance, indicating disk space usage using
1.415 mike 1231: <code><a href="#the-progress-element" id="progress_11">progress</a></code> would be inappropriate. Instead, the
1232: <code><a href="#the-meter-element" id="meter_8">meter</a></code> element is available for such use cases.<dl class="domintro"><dt><var title="">progress</var> . <code title="dom-progress-position"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-progress-position" title='Read about this "position" reference in the full HTML5 spec.'>position</a></code></dt>
1.11 mike 1233:
1234: <dd>
1235:
1236: <p>For a determinate progress bar (one with known current and
1237: maximum values), returns the result of dividing the current value
1238: by the maximum value.</p>
1239:
1.160 mike 1240: <p>For an indeterminate progress bar, returns −1.</p>
1.11 mike 1241:
1.278 mike 1242: </dd>
1243:
1.412 mike 1244: </dl><h4 id="the-meter-element"><span class="secno">4.10.17 </span>The <dfn><code>meter</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.415 mike 1245: <dd><a href="content-models.html#flow-content" id="flow-content_132">Flow content</a>.</dd>
1246: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_156">Phrasing content</a>.</dd>
1247: <dd><a href="forms.html#category-label" id="category-label_9" title="category-label">Labelable</a> <a href="forms.html#form-associated-element" id="form-associated-element_15">form-associated element</a>.</dd>
1.203 mike 1248: <dt>Contexts in which this element can be used:</dt>
1.415 mike 1249: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_157">phrasing content</a> is expected.</dd>
1.11 mike 1250: <dt>Content model:</dt>
1.415 mike 1251: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_158">Phrasing content</a>, but there must be no <code><a href="#the-meter-element" id="meter_9">meter</a></code> element descendants.</dd>
1.11 mike 1252: <dt>Content attributes:</dt>
1.415 mike 1253: <dd><a href="elements.html#global-attributes" id="global-attributes_98">Global attributes</a></dd>
1254: <dd><code title="attr-meter-value"><a href="#attr-meter-value" id="value_42">value</a></code></dd>
1255: <dd><code title="attr-meter-min"><a href="#attr-meter-min" id="min_38">min</a></code></dd>
1256: <dd><code title="attr-meter-max"><a href="#attr-meter-max" id="max_41">max</a></code></dd>
1.413 mike 1257: <dd><code title="attr-meter-low"><a href="#attr-meter-low" id="low">low</a></code></dd>
1258: <dd><code title="attr-meter-high"><a href="#attr-meter-high" id="high">high</a></code></dd>
1259: <dd><code title="attr-meter-optimum"><a href="#attr-meter-optimum" id="optimum">optimum</a></code></dd>
1.415 mike 1260: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_60">form</a></code></dd>
1.11 mike 1261: <dt>DOM interface:</dt>
1262: <dd>
1.415 mike 1263: <pre class="idl">interface <dfn id="htmlmeterelement">HTMLMeterElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_109">HTMLElement</a> {
1.197 mike 1264: attribute double <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-meter-value" title='Read about this "value" reference in the full HTML5 spec.'>value</a>;
1265: attribute double <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-meter-min" title='Read about this "min" reference in the full HTML5 spec.'>min</a>;
1266: attribute double <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-meter-max" title='Read about this "max" reference in the full HTML5 spec.'>max</a>;
1267: attribute double <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-meter-low" title='Read about this "low" reference in the full HTML5 spec.'>low</a>;
1268: attribute double <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-meter-high" title='Read about this "high" reference in the full HTML5 spec.'>high</a>;
1269: attribute double <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-meter-optimum" title='Read about this "optimum" reference in the full HTML5 spec.'>optimum</a>;
1.415 mike 1270: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement_12">HTMLFormElement</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fae-form" title='Read about this "form" reference in the full HTML5 spec.'>form</a>;
1.162 mike 1271: readonly attribute <a class="full-spec-link" href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/forms.html#dom-lfe-labels" title='Read about this "labels" reference in the full HTML5 spec.'>labels</a>;
1.11 mike 1272: };</pre>
1273: </dd>
1.415 mike 1274: </dl><p>The <code><a href="#the-meter-element" id="meter_10">meter</a></code> element <a class="full-spec-link" href="http://dev.w3.org/html5/spec/rendering.html#represents" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a scalar
1.11 mike 1275: measurement within a known range, or a fractional value; for example
1276: disk usage, the relevance of a query result, or the fraction of a
1.415 mike 1277: voting population to have selected a particular candidate.<p>This is also known as a gauge.<p class="note">The <code><a href="#the-meter-element" id="meter_11">meter</a></code> element should not be used to
1.11 mike 1278: indicate progress (as in a progress bar). For that role, HTML
1.415 mike 1279: provides a separate <code><a href="#the-progress-element" id="progress_12">progress</a></code> element.<p class="note">The <code><a href="#the-meter-element" id="meter_12">meter</a></code> element also does not
1.160 mike 1280: represent a scalar value of arbitrary range — for example, it
1.11 mike 1281: would be wrong to use this to report a weight, or height, unless
1.160 mike 1282: there is a known maximum value.<p>There are six attributes that determine the semantics of the
1283: gauge represented by the element.<p>The <dfn id="attr-meter-min" title="attr-meter-min"><code>min</code></dfn> attribute
1.11 mike 1284: specifies the lower bound of the range, and the <dfn id="attr-meter-max" title="attr-meter-max"><code>max</code></dfn> attribute specifies
1285: the upper bound. The <dfn id="attr-meter-value" title="attr-meter-value"><code>value</code></dfn> attribute
1286: specifies the value to have the gauge indicate as the "measured"
1.160 mike 1287: value.<p>The other three attributes can be used to segment the gauge's
1.11 mike 1288: range into "low", "medium", and "high" parts, and to indicate which
1289: part of the gauge is the "optimum" part. The <dfn id="attr-meter-low" title="attr-meter-low"><code>low</code></dfn> attribute specifies
1290: the range that is considered to be the "low" part, and the <dfn id="attr-meter-high" title="attr-meter-high"><code>high</code></dfn> attribute specifies
1291: the range that is considered to be the "high" part. The <dfn id="attr-meter-optimum" title="attr-meter-optimum"><code>optimum</code></dfn> attribute
1292: gives the position that is "optimum"; if that is higher than the
1293: "high" value then this indicates that the higher the value, the
1294: better; if it's lower than the "low" mark then it indicates that
1295: lower values are better, and naturally if it is in between then it
1.415 mike 1296: indicates that neither high nor low values are good.<p> The <code title="attr-meter-value"><a href="#attr-meter-value" id="value_43">value</a></code> attribute must be
1297: specified. The <code title="attr-meter-value"><a href="#attr-meter-value" id="value_44">value</a></code>, <code title="attr-meter-min"><a href="#attr-meter-min" id="min_39">min</a></code>, <code title="attr-meter-low"><a href="#attr-meter-low" id="low_0">low</a></code>, <code title="attr-meter-high"><a href="#attr-meter-high" id="high_0">high</a></code>, <code title="attr-meter-max"><a href="#attr-meter-max" id="max_42">max</a></code>, and <code title="attr-meter-optimum"><a href="#attr-meter-optimum" id="optimum_0">optimum</a></code> attributes, when present,
1298: must have values that are <a href="common-microsyntaxes.html#valid-floating-point-number" id="valid-floating-point-number_10" title="valid floating point
1299: number">valid floating point numbers</a>.<p>In addition, the attributes' values are further constrained:<p>Let <var title="">value</var> be the <code title="attr-meter-value"><a href="#attr-meter-value" id="value_45">value</a></code> attribute's number.<p>If the <code title="attr-meter-min"><a href="#attr-meter-min" id="min_40">min</a></code> attribute
1.11 mike 1300: attribute is specified, then let <var title="">minimum</var> be that
1.415 mike 1301: attribute's value; otherwise, let it be zero.<p>If the <code title="attr-meter-max"><a href="#attr-meter-max" id="max_43">max</a></code> attribute
1.11 mike 1302: attribute is specified, then let <var title="">maximum</var> be that
1.160 mike 1303: attribute's value; otherwise, let it be 1.0.<p>The following inequalities must hold, as applicable:<ul class="brief"><li><var title="">minimum</var> ≤ <var title="">value</var> ≤ <var title="">maximum</var></li>
1.415 mike 1304: <li><var title="">minimum</var> ≤ <code title="attr-meter-low"><a href="#attr-meter-low" id="low_1">low</a></code> ≤ <var title="">maximum</var> (if <code title="attr-meter-low"><a href="#attr-meter-low" id="low_2">low</a></code> is specified)</li>
1305: <li><var title="">minimum</var> ≤ <code title="attr-meter-high"><a href="#attr-meter-high" id="high_1">high</a></code> ≤ <var title="">maximum</var> (if <code title="attr-meter-high"><a href="#attr-meter-high" id="high_2">high</a></code> is specified)</li>
1306: <li><var title="">minimum</var> ≤ <code title="attr-meter-optimum"><a href="#attr-meter-optimum" id="optimum_1">optimum</a></code> ≤ <var title="">maximum</var> (if <code title="attr-meter-optimum"><a href="#attr-meter-optimum" id="optimum_2">optimum</a></code> is specified)</li>
1307: <li><code title="attr-meter-low"><a href="#attr-meter-low" id="low_3">low</a></code> ≤ <code title="attr-meter-high"><a href="#attr-meter-high" id="high_3">high</a></code> (if both <code title="attr-meter-low"><a href="#attr-meter-low" id="low_4">low</a></code> and <code title="attr-meter-high"><a href="#attr-meter-high" id="high_4">high</a></code> are specified)</li>
1.21 mike 1308: </ul><p class="note">If no minimum or maximum is specified, then the
1.11 mike 1309: range is assumed to be 0..1, and the value thus has to be within
1.160 mike 1310: that range.<p>Authors are encouraged to include a textual representation of the
1.11 mike 1311: gauge's state in the element's contents, for users of user agents
1.415 mike 1312: that do not support the <code><a href="#the-meter-element" id="meter_13">meter</a></code> element.<div class="example">
1.11 mike 1313:
1314: <p>The following examples show three gauges that would all be
1315: three-quarters full:</p>
1316:
1317: <pre>Storage space usage: <meter value=6 max=8>6 blocks used (out of 8 total)</meter>
1318: Voter turnout: <meter value=0.75><img alt="75%" src="graph75.png"></meter>
1319: Tickets sold: <meter min="0" max="100" value="75"></meter></pre>
1320:
1321: <p>The following example is incorrect use of the element, because
1322: it doesn't give a range (and since the default maximum is 1, both
1323: of the gauges would end up looking maxed out):</p>
1324:
1325: <pre class="bad"><p>The grapefruit pie had a radius of <meter value=12>12cm</meter>
1326: and a height of <meter value=2>2cm</meter>.</p> <!-- <strong>BAD!</strong> --></pre>
1327:
1328: <p>Instead, one would either not include the meter element, or use
1329: the meter element with a defined range to give the dimensions in
1330: context compared to other pies:</p>
1331:
1332: <pre><p>The grapefruit pie had a radius of 12cm and a height of
1333: 2cm.</p>
1334: <dl>
1335: <dt>Radius: <dd> <meter min=0 max=20 value=12>12cm</meter>
1336: <dt>Height: <dd> <meter min=0 max=10 value=2>2cm</meter>
1337: </dl></pre>
1338:
1339: </div><p>There is no explicit way to specify units in the
1.415 mike 1340: <code><a href="#the-meter-element" id="meter_14">meter</a></code> element, but the units may be specified in the
1341: <code title="attr-title"><a href="elements.html#the-title-attribute" id="title_27">title</a></code> attribute in free-form text.<div class="example">
1.11 mike 1342:
1343: <p>The example above could be extended to mention the units:</p>
1344:
1345: <pre><dl>
1346: <dt>Radius: <dd> <meter min=0 max=20 value=12 title="centimeters">12cm</meter>
1347: <dt>Height: <dd> <meter min=0 max=10 value=2 title="centimeters">2cm</meter>
1348: </dl></pre>
1349:
1350: </div><div class="example">
1351: <p>The following markup:</p>
1352: <pre><h3>Suggested groups</h3>
1353: <menu type="toolbar">
1354: <a href="?cmd=hsg" onclick="hideSuggestedGroups()">Hide suggested groups</a>
1355: </menu>
1356: <ul>
1357: <li>
1358: <p><a href="/group/comp.infosystems.www.authoring.stylesheets/view">comp.infosystems.www.authoring.stylesheets</a> -
1359: <a href="/group/comp.infosystems.www.authoring.stylesheets/subscribe">join</a></p>
1360: <p>Group description: <strong>Layout/presentation on the WWW.</strong></p>
1361: <p><strong><meter value="0.5">Moderate activity,</meter></strong> Usenet, 618 subscribers</p>
1362: </li>
1363: <li>
1364: <p><a href="/group/netscape.public.mozilla.xpinstall/view">netscape.public.mozilla.xpinstall</a> -
1365: <a href="/group/netscape.public.mozilla.xpinstall/subscribe">join</a></p>
1366: <p>Group description: <strong>Mozilla XPInstall discussion.</strong></p>
1367: <p><strong><meter value="0.25">Low activity,</meter></strong> Usenet, 22 subscribers</p>
1368: </li>
1369: <li>
1370: <p><a href="/group/mozilla.dev.general/view">mozilla.dev.general</a> -
1371: <a href="/group/mozilla.dev.general/subscribe">join</a></p>
1372: <p><strong><meter value="0.25">Low activity,</meter></strong> Usenet, 66 subscribers</p>
1373: </li>
1374: </ul></pre>
1375: <p>Might be rendered as follows:</p>
1.203 mike 1376: <p><img alt="With the <meter> elements rendered as inline green bars of varying lengths." height="178" src="http://dev.w3.org/html5/spec/images/sample-meter.png" width="332"></p>
1.13 mike 1377: </div><p>User agents combine the value of
1.415 mike 1378: the <code title="attr-title"><a href="elements.html#the-title-attribute" id="title_28">title</a></code> attribute and the other
1.11 mike 1379: attributes to provide context-sensitive help or inline text
1.160 mike 1380: detailing the actual values.<div class="example">
1.11 mike 1381: <p>For example, the following snippet:</p>
1382: <pre><meter min=0 max=60 value=23.2 title=seconds></meter></pre>
1383: <p>...might cause the user agent to display a gauge with a tooltip
1384: saying "Value: 23.2 out of 60." on one line and "seconds" on a
1385: second line.</p>
1.415 mike 1386: </div><p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_61">form</a></code> attribute is used to
1387: explicitly associate the <code><a href="#the-meter-element" id="meter_15">meter</a></code> element with its
1388: <a href="association-of-controls-and-forms.html#form-owner" id="form-owner_13">form owner</a>.<div class="example">
1.11 mike 1389:
1390: <p>The following example shows how a gauge could fall back to
1391: localized or pretty-printed text.</p>
1392:
1.160 mike 1393: <pre><p>Disk usage: <meter min=0 value=170261928 max=233257824>170 261 928 bytes used
1394: out of 233 257 824 bytes available</meter></p></pre>
1.11 mike 1395:
1.160 mike 1396: </div>
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