Annotation of html5/spec-author-view/the-button-element.html, revision 1.576
1.575 mike 1: <html lang="en-US-x-Hixie"><meta content="text/html; charset=utf-8" http-equiv="Content-Type"><title>4.10.8 The button element — HTML5: Edition for Web Authors</title><meta content="width=device-width;" name="viewport"><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:
1.574 mike 191: .stability {
192: position: fixed;
193: bottom: 0;
194: left: 0; right: 0;
195: margin: 0 auto 0 auto;
196: width: 50%;
197: background: maroon; color: yellow;
198: -webkit-border-radius: 1em 1em 0 0;
199: -moz-border-radius: 1em 1em 0 0;
200: border-radius: 1em 1em 0 0;
201: -moz-box-shadow: 0 0 1em #500;
202: -webkit-box-shadow: 0 0 1em #500;
203: box-shadow: 0 0 1em red;
204: padding: 0.5em 1em;
205: text-align: center;
206: }
207: .stability strong {
208: display: block;
209: }
210: .stability input {
211: appearance: none; margin: 0; border: 0; padding: 0.25em 0.5em; background: transparent; color: black;
212: position: absolute; top: -0.5em; right: 0; font: 1.25em sans-serif; text-align: center;
213: }
214: .stability input:hover {
215: color: white;
216: text-shadow: 0 0 2px black;
217: }
218: .stability input:active {
219: padding: 0.3em 0.45em 0.2em 0.55em;
220: }
221: .stability :link, .stability :visited,
222: .stability :link:hover, .stability :visited:hover {
223: background: transparent;
224: color: white;
225: }
226:
227: </style><style type="text/css">
1.1 mike 228:
229: .applies thead th > * { display: block; }
230: .applies thead code { display: block; }
231: .applies tbody th { whitespace: nowrap; }
232: .applies td { text-align: center; }
233: .applies .yes { background: yellow; }
234:
1.136 mike 235: .matrix, .matrix td { border: hidden; text-align: right; }
1.1 mike 236: .matrix { margin-left: 2em; }
237:
238: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
239: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
240: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
241:
1.213 mike 242: td.eg { border-width: thin; text-align: center; }
243:
1.1 mike 244: #table-example-1 { border: solid thin; border-collapse: collapse; margin-left: 3em; }
245: #table-example-1 * { font-family: "Essays1743", serif; line-height: 1.01em; }
246: #table-example-1 caption { padding-bottom: 0.5em; }
247: #table-example-1 thead, #table-example-1 tbody { border: none; }
248: #table-example-1 th, #table-example-1 td { border: solid thin; }
249: #table-example-1 th { font-weight: normal; }
250: #table-example-1 td { border-style: none solid; vertical-align: top; }
251: #table-example-1 th { padding: 0.5em; vertical-align: middle; text-align: center; }
252: #table-example-1 tbody tr:first-child td { padding-top: 0.5em; }
253: #table-example-1 tbody tr:last-child td { padding-bottom: 1.5em; }
254: #table-example-1 tbody td:first-child { padding-left: 2.5em; padding-right: 0; width: 9em; }
255: #table-example-1 tbody td:first-child::after { content: leader(". "); }
256: #table-example-1 tbody td { padding-left: 2em; padding-right: 2em; }
257: #table-example-1 tbody td:first-child + td { width: 10em; }
258: #table-example-1 tbody td:first-child + td ~ td { width: 2.5em; }
259: #table-example-1 tbody td:first-child + td + td + td ~ td { width: 1.25em; }
260:
261: .apple-table-examples { border: none; border-collapse: separate; border-spacing: 1.5em 0em; width: 40em; margin-left: 3em; }
262: .apple-table-examples * { font-family: "Times", serif; }
263: .apple-table-examples td, .apple-table-examples th { border: none; white-space: nowrap; padding-top: 0; padding-bottom: 0; }
264: .apple-table-examples tbody th:first-child { border-left: none; width: 100%; }
265: .apple-table-examples thead th:first-child ~ th { font-size: smaller; font-weight: bolder; border-bottom: solid 2px; text-align: center; }
266: .apple-table-examples tbody th::after, .apple-table-examples tfoot th::after { content: leader(". ") }
267: .apple-table-examples tbody th, .apple-table-examples tfoot th { font: inherit; text-align: left; }
268: .apple-table-examples td { text-align: right; vertical-align: top; }
269: .apple-table-examples.e1 tbody tr:last-child td { border-bottom: solid 1px; }
1.9 mike 270: .apple-table-examples.e1 tbody + tbody tr:last-child td { border-bottom: double 3px; }
271: .apple-table-examples.e2 th[scope=row] { padding-left: 1em; }
272: .apple-table-examples sup { line-height: 0; }
273:
1.11 mike 274: .details-example img { vertical-align: top; }
275:
1.386 mike 276: #base64-table {
277: white-space: nowrap;
278: font-size: 0.6em;
279: column-width: 6em;
280: column-count: 5;
281: column-gap: 1em;
282: -moz-column-width: 6em;
283: -moz-column-count: 5;
284: -moz-column-gap: 1em;
285: -webkit-column-width: 6em;
286: -webkit-column-count: 5;
287: -webkit-column-gap: 1em;
288: }
289: #base64-table thead { display: none; }
290: #base64-table * { border: none; }
291: #base64-table tbody td:first-child:after { content: ':'; }
292: #base64-table tbody td:last-child { text-align: right; }
293:
1.26 mike 294: #named-character-references-table {
1.257 mike 295: white-space: nowrap;
1.26 mike 296: font-size: 0.6em;
1.257 mike 297: column-width: 30em;
1.26 mike 298: column-gap: 1em;
1.257 mike 299: -moz-column-width: 30em;
1.26 mike 300: -moz-column-gap: 1em;
1.257 mike 301: -webkit-column-width: 30em;
1.26 mike 302: -webkit-column-gap: 1em;
303: }
1.257 mike 304: #named-character-references-table > table > tbody > tr > td:first-child + td,
1.26 mike 305: #named-character-references-table > table > tbody > tr > td:last-child { text-align: center; }
306: #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 307: #named-character-references-table > table > tbody > tr#entity-CounterClockwiseContourIntegral > td:first-child { font-size: 0.5em; }
1.26 mike 308:
1.35 mike 309: .glyph.control { color: red; }
310:
1.38 mike 311: @font-face {
312: font-family: 'Essays1743';
313: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743.ttf');
314: }
315: @font-face {
316: font-family: 'Essays1743';
317: font-weight: bold;
318: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-Bold.ttf');
319: }
320: @font-face {
321: font-family: 'Essays1743';
322: font-style: italic;
323: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-Italic.ttf');
324: }
325: @font-face {
326: font-family: 'Essays1743';
327: font-style: italic;
328: font-weight: bold;
329: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-BoldItalic.ttf');
330: }
331:
1.425 mike 332: </style><script type="text/javascript">
1.399 mike 333: function getCookie(name) {
334: var params = location.search.substr(1).split("&");
335: for (var index = 0; index < params.length; index++) {
336: if (params[index] == name)
337: return "1";
338: var data = params[index].split("=");
339: if (data[0] == name)
340: return unescape(data[1]);
341: }
342: var cookies = document.cookie.split("; ");
343: for (var index = 0; index < cookies.length; index++) {
344: var data = cookies[index].split("=");
345: if (data[0] == name)
346: return unescape(data[1]);
347: }
348: return null;
349: }
350: function load(script) {
351: var e = document.createElement('script');
352: e.setAttribute('src', script + '?' + encodeURIComponent(location) + '&' + encodeURIComponent(document.referrer));
353: document.body.appendChild(e);
354: }
355: function init() {
356: if (location.search == '?slow-browser')
357: return;
358: var configUI = document.createElement('div');
359: configUI.id = 'configUI';
360: document.body.appendChild(configUI);
361: if (document.getElementById('head'))
362: load('toc.js');
363: load('dfn.js');
364: if (getCookie('profile') == '1')
365: document.getElementsByTagName('h2')[0].textContent += '; load: ' + (new Date() - loadTimer) + 'ms';
366: fixBrokenLink();
367: }
1.574 mike 368: </script><script type="text/javascript">
369: function getCookie(name) {
370: var params = location.search.substr(1).split("&");
371: for (var index = 0; index < params.length; index++) {
372: if (params[index] == name)
373: return "1";
374: var data = params[index].split("=");
375: if (data[0] == name)
376: return unescape(data[1]);
377: }
378: var cookies = document.cookie.split("; ");
379: for (var index = 0; index < cookies.length; index++) {
380: var data = cookies[index].split("=");
381: if (data[0] == name)
382: return unescape(data[1]);
383: }
384: return null;
385: }
386: </script><link href="style.css" rel="stylesheet"><link href="http://www.w3.org/StyleSheets/TR/W3C-WD" rel="stylesheet" type="text/css"><script src="link-fixup.js" type="text/javascript"></script><script src="dfn.js" type="text/javascript"></script><script src="toc.js" type="text/javascript"></script><link href="common-input-element-attributes.html" rel="prev" title="4.10.7.2 Common input element attributes">
1.160 mike 387: <link href="Overview.html#contents" rel="index" title="Table of contents">
1.570 mike 388: <link href="the-select-element.html" rel="next" title="4.10.9 The select element">
1.574 mike 389: <body class="split chapter" onload="fixBrokenLink(); initToc()"><div class="head" id="head">
1.469 mike 390: <div aria-haspopup="true" id="jumpIndexA-button" role="button" tabindex="0">jump
1.561 mike 391: <div id="jumpIndexA"><ul><li><a class="noindex" href="the-a-element.html#the-a-element">a</a><a class="noindex" href="the-abbr-element.html#the-abbr-element">abbr</a><a class="noindex" href="the-address-element.html#the-address-element">address</a><a class="noindex" href="the-area-element.html#the-area-element">area</a><a class="noindex" href="the-article-element.html#the-article-element">article</a><a class="noindex" href="the-aside-element.html#the-aside-element">aside</a><a class="noindex" href="the-audio-element.html#the-audio-element">audio</a></ul><ul><li><a class="noindex" href="the-b-element.html#the-b-element">b</a><a class="noindex" href="the-base-element.html#the-base-element">base</a><a class="noindex" href="the-bdi-element.html#the-bdi-element">bdi</a><a class="noindex" href="the-bdo-element.html#the-bdo-element">bdo</a><a class="noindex" href="the-blockquote-element.html#the-blockquote-element">blockquote</a><a class="noindex" href="the-body-element.html#the-body-element">body</a><a class="noindex" href="the-br-element.html#the-br-element">br</a><a class="noindex" href="#the-button-element">button</a></ul><ul><li><a class="noindex" href="the-canvas-element.html#the-canvas-element">canvas</a><a class="noindex" href="the-caption-element.html#the-caption-element">caption</a><a class="noindex" href="the-cite-element.html#the-cite-element">cite</a><a class="noindex" href="the-code-element.html#the-code-element">code</a><a class="noindex" href="the-col-element.html#the-col-element">col</a><a class="noindex" href="the-colgroup-element.html#the-colgroup-element">colgroup</a><a class="noindex" href="the-command-element.html#the-command-element">command</a></ul><ul><li><a class="noindex" href="the-datalist-element.html#the-datalist-element">datalist</a><a class="noindex" href="the-dd-element.html#the-dd-element">dd</a><a class="noindex" href="the-del-element.html#the-del-element">del</a><a class="noindex" href="the-details-element.html#the-details-element">details</a><a class="noindex" href="the-dfn-element.html#the-dfn-element">dfn</a><a class="noindex" href="the-div-element.html#the-div-element">div</a><a class="noindex" href="the-dl-element.html#the-dl-element">dl</a><a class="noindex" href="the-dt-element.html#the-dt-element">dt</a></ul><ul><li><a class="noindex" href="the-em-element.html#the-em-element">em</a><a class="noindex" href="the-embed-element.html#the-embed-element">embed</a><a class="noindex" href="the-fieldset-element.html#the-fieldset-element">fieldset</a><a class="noindex" href="the-figcaption-element.html#the-figcaption-element">figcaption</a><a class="noindex" href="the-figure-element.html#the-figure-element">figure</a><a class="noindex" href="the-footer-element.html#the-footer-element">footer</a><a class="noindex" href="the-form-element.html#the-form-element">form</a></ul><ul><li><a class="noindex" href="the-h1-h2-h3-h4-h5-and-h6-elements.html#the-h1-h2-h3-h4-h5-and-h6-elements">h1</a><a class="noindex" href="the-h1-h2-h3-h4-h5-and-h6-elements.html#the-h1-h2-h3-h4-h5-and-h6-elements">h2</a><a class="noindex" href="the-h1-h2-h3-h4-h5-and-h6-elements.html#the-h1-h2-h3-h4-h5-and-h6-elements">h3</a><a class="noindex" href="the-h1-h2-h3-h4-h5-and-h6-elements.html#the-h1-h2-h3-h4-h5-and-h6-elements">h4</a><a class="noindex" href="the-h1-h2-h3-h4-h5-and-h6-elements.html#the-h1-h2-h3-h4-h5-and-h6-elements">h5</a><a class="noindex" href="the-h1-h2-h3-h4-h5-and-h6-elements.html#the-h1-h2-h3-h4-h5-and-h6-elements">h6</a><a class="noindex" href="the-head-element.html#the-head-element">head</a><a class="noindex" href="the-header-element.html#the-header-element">header</a><a class="noindex" href="the-hgroup-element.html#the-hgroup-element">hgroup</a><a class="noindex" href="the-hr-element.html#the-hr-element">hr</a><a class="noindex" href="the-html-element.html#the-html-element">html</a></ul><ul><li><a class="noindex" href="the-i-element.html#the-i-element">i</a><a class="noindex" href="the-iframe-element.html#the-iframe-element">iframe</a><a class="noindex" href="the-img-element.html#the-img-element">img</a><a class="noindex" href="the-input-element.html#the-input-element">input</a><a class="noindex" href="the-ins-element.html#the-ins-element">ins</a><a class="noindex" href="the-kbd-element.html#the-kbd-element">kbd</a><a class="noindex" href="the-keygen-element.html#the-keygen-element">keygen</a></ul><ul><li><a class="noindex" href="the-label-element.html#the-label-element">label</a><a class="noindex" href="the-legend-element.html#the-legend-element">legend</a><a class="noindex" href="the-li-element.html#the-li-element">li</a><a class="noindex" href="the-link-element.html#the-link-element">link</a><a class="noindex" href="the-map-element.html#the-map-element">map</a><a class="noindex" href="the-mark-element.html#the-mark-element">mark</a><a class="noindex" href="the-menu-element.html#the-menu-element">menu</a><a class="noindex" href="the-meta-element.html#the-meta-element">meta</a><a class="noindex" href="the-meter-element.html#the-meter-element">meter</a></ul><ul><li><a class="noindex" href="the-nav-element.html#the-nav-element">nav</a><a class="noindex" href="the-noscript-element.html#the-noscript-element">noscript</a><a class="noindex" href="the-object-element.html#the-object-element">object</a><a class="noindex" href="the-ol-element.html#the-ol-element">ol</a><a class="noindex" href="the-optgroup-element.html#the-optgroup-element">optgroup</a><a class="noindex" href="the-option-element.html#the-option-element">option</a><a class="noindex" href="the-output-element.html#the-output-element">output</a></ul><ul><li><a class="noindex" href="the-p-element.html#the-p-element">p</a><a class="noindex" href="the-param-element.html#the-param-element">param</a><a class="noindex" href="the-pre-element.html#the-pre-element">pre</a><a class="noindex" href="the-progress-element.html#the-progress-element">progress</a><a class="noindex" href="the-q-element.html#the-q-element">q</a><a class="noindex" href="the-rp-element.html#the-rp-element">rp</a><a class="noindex" href="the-rt-element.html#the-rt-element">rt</a><a class="noindex" href="the-ruby-element.html#the-ruby-element">ruby</a></ul><ul><li><a class="noindex" href="the-s-element.html#the-s-element">s</a><a class="noindex" href="the-samp-element.html#the-samp-element">samp</a><a class="noindex" href="the-script-element.html#the-script-element">script</a><a class="noindex" href="the-section-element.html#the-section-element">section</a><a class="noindex" href="the-select-element.html#the-select-element">select</a><a class="noindex" href="the-small-element.html#the-small-element">small</a><a class="noindex" href="the-source-element.html#the-source-element">source</a><a class="noindex" href="the-span-element.html#the-span-element">span</a></ul><ul><li><a class="noindex" href="the-strong-element.html#the-strong-element">strong</a><a class="noindex" href="the-style-element.html#the-style-element">style</a><a class="noindex" href="the-sub-and-sup-elements.html#the-sub-and-sup-elements">sub</a><a class="noindex" href="the-summary-element.html#the-summary-element">summary</a><a class="noindex" href="the-sub-and-sup-elements.html#the-sub-and-sup-elements">sup</a></ul><ul><li><a class="noindex" href="the-table-element.html#the-table-element">table</a><a class="noindex" href="the-tbody-element.html#the-tbody-element">tbody</a><a class="noindex" href="the-td-element.html#the-td-element">td</a><a class="noindex" href="the-textarea-element.html#the-textarea-element">textarea</a><a class="noindex" href="the-tfoot-element.html#the-tfoot-element">tfoot</a><a class="noindex" href="the-th-element.html#the-th-element">th</a><a class="noindex" href="the-thead-element.html#the-thead-element">thead</a><a class="noindex" href="the-time-element.html#the-time-element">time</a><a class="noindex" href="the-title-element.html#the-title-element">title</a></ul><ul><li><a class="noindex" href="the-tr-element.html#the-tr-element">tr</a><a class="noindex" href="the-track-element.html#the-track-element">track</a><a class="noindex" href="the-u-element.html#the-u-element">u</a><a class="noindex" href="the-ul-element.html#the-ul-element">ul</a><a class="noindex" href="the-var-element.html#the-var-element">var</a><a class="noindex" href="the-video-element.html#the-video-element">video</a><a class="noindex" href="the-wbr-element.html#the-wbr-element">wbr</a></ul><ul class="jumpIndexA-other"><li><a class="noindex" href="global-attributes.html#global-attributes">global attributes</a><a class="noindex" href="index-of-terms.html#index-of-terms">terms</a></ul></div></div>
1.552 mike 392: <script src="jump-indexes.js"></script><p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
393:
1.570 mike 394: <h1>HTML5: Edition for Web Authors</h1>
395:
396: </div><div class="prev_next">
397: <a href="common-input-element-attributes.html">← 4.10.7.2 Common input element attributes</a> –
1.160 mike 398: <a href="Overview.html#contents">Table of contents</a> –
1.570 mike 399: <a href="the-select-element.html">4.10.9 The select element →</a>
1.552 mike 400: </div>
1.156 mike 401:
1.570 mike 402: <h4 id="the-button-element"><span class="secno">4.10.8 </span>The <dfn aria-haspopup="true" role="button" tabindex="0"><code>button</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.442 mike 403: <dd><a href="content-models.html#flow-content" id="flow-content_125">Flow content</a>.</dd>
1.415 mike 404: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_138">Phrasing content</a>.</dd>
1.516 mike 405: <dd><a href="content-models.html#interactive-content" id="interactive-content_13">Interactive content</a>.</dd>
1.574 mike 406: <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>
1.424 mike 407: <dt>Contexts in which this element can be used:</dt>
1.415 mike 408: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_139">phrasing content</a> is expected.</dd>
1.424 mike 409: <dt>Content model:</dt>
1.516 mike 410: <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>
1.424 mike 411: <dt>Content attributes:</dt>
1.552 mike 412: <dd><a href="global-attributes.html#global-attributes" id="global-attributes_89">Global attributes</a></dd>
1.415 mike 413: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus_1">autofocus</a></code></dd>
414: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled_13">disabled</a></code></dd>
1.568 mike 415: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_49">form</a></code></dd>
1.415 mike 416: <dd><code title="attr-fs-formaction"><a href="association-of-controls-and-forms.html#attr-fs-formaction" id="formaction_26">formaction</a></code></dd>
417: <dd><code title="attr-fs-formenctype"><a href="association-of-controls-and-forms.html#attr-fs-formenctype" id="formenctype_26">formenctype</a></code></dd>
418: <dd><code title="attr-fs-formmethod"><a href="association-of-controls-and-forms.html#attr-fs-formmethod" id="formmethod_26">formmethod</a></code></dd>
419: <dd><code title="attr-fs-formnovalidate"><a href="association-of-controls-and-forms.html#attr-fs-formnovalidate" id="formnovalidate_27">formnovalidate</a></code></dd>
420: <dd><code title="attr-fs-formtarget"><a href="association-of-controls-and-forms.html#attr-fs-formtarget" id="formtarget_26">formtarget</a></code></dd>
1.574 mike 421: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name_38">name</a></code></dd>
422: <dd><code title="attr-button-type"><a href="#attr-button-type" id="type_75">type</a></code></dd>
1.557 mike 423: <dd><code title="attr-button-value"><a href="#attr-button-value" id="value_32">value</a></code></dd>
1.424 mike 424: <dt>DOM interface:</dt>
1.9 mike 425: <dd>
1.455 mike 426: <pre class="idl">interface <dfn aria-haspopup="true" id="htmlbuttonelement" role="button" tabindex="0">HTMLButtonElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_97">HTMLElement</a> {
1.557 mike 427: attribute boolean <a href="association-of-controls-and-forms.html#dom-fe-autofocus" id="dom-fe-autofocus_1" title="dom-fe-autofocus">autofocus</a>;
428: attribute boolean <a href="association-of-controls-and-forms.html#dom-fe-disabled" id="dom-fe-disabled_1" title="dom-fe-disabled">disabled</a>;
1.574 mike 429: readonly attribute <a href="the-form-element.html#htmlformelement" id="htmlformelement_5">HTMLFormElement</a> <a href="association-of-controls-and-forms.html#dom-fae-form" title="dom-fae-form">form</a>;
1.557 mike 430: attribute DOMString <a href="association-of-controls-and-forms.html#dom-fs-formaction" id="dom-fs-formaction_1" title="dom-fs-formAction">formAction</a>;
431: attribute DOMString <a href="association-of-controls-and-forms.html#dom-fs-formenctype" id="dom-fs-formenctype_1" title="dom-fs-formEnctype">formEnctype</a>;
432: attribute DOMString <a href="association-of-controls-and-forms.html#dom-fs-formmethod" id="dom-fs-formmethod_1" title="dom-fs-formMethod">formMethod</a>;
433: attribute DOMString <a href="association-of-controls-and-forms.html#dom-fs-formnovalidate" id="dom-fs-formnovalidate_1" title="dom-fs-formNoValidate">formNoValidate</a>;
434: attribute DOMString <a href="association-of-controls-and-forms.html#dom-fs-formtarget" id="dom-fs-formtarget_1" title="dom-fs-formTarget">formTarget</a>;
435: attribute DOMString <a href="association-of-controls-and-forms.html#dom-fe-name" id="dom-fe-name_2" title="dom-fe-name">name</a>;
436: attribute DOMString <a href="#dom-button-type" id="dom-button-type_0" title="dom-button-type">type</a>;
437: attribute DOMString <a href="#dom-button-value" id="dom-button-value_0" title="dom-button-value">value</a>;
1.162 mike 438:
1.556 mike 439: readonly attribute boolean <a href="association-of-controls-and-forms.html#dom-cva-willvalidate" title="dom-cva-willValidate">willValidate</a>;
1.576 ! mike 440: 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 href="association-of-controls-and-forms.html#dom-cva-validity" id="dom-cva-validity_3" title="dom-cva-validity">validity</a>;
1.556 mike 441: readonly attribute DOMString <a href="association-of-controls-and-forms.html#dom-cva-validationmessage" title="dom-cva-validationMessage">validationMessage</a>;
442: boolean <a href="association-of-controls-and-forms.html#dom-cva-checkvalidatity" title="dom-cva-checkValidatity">checkValidity</a>();
443: void <a href="association-of-controls-and-forms.html#dom-cva-setcustomvalidity" title="dom-cva-setCustomValidity">setCustomValidity</a>(in DOMString error);
1.9 mike 444:
1.576 ! mike 445: 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 href="the-label-element.html#dom-lfe-labels" title="dom-lfe-labels">labels</a>;
1.9 mike 446: };</pre>
447: </dd>
1.576 ! mike 448: </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
1.516 mike 449: button. <p>The element is a <a href="forms.html#concept-button" id="concept-button_4" title="concept-button">button</a>.<p>The <dfn aria-haspopup="true" id="attr-button-type" role="button" tabindex="0"><code>type</code></dfn>
1.9 mike 450: attribute controls the behavior of the button when it is activated.
1.574 mike 451: It is an <a href="common-microsyntaxes.html#enumerated-attribute" id="enumerated-attribute_9">enumerated attribute</a>. The following table
1.160 mike 452: lists the keywords and states for the attribute — the keywords
1.9 mike 453: in the left column map to the states in the cell in the second
1.160 mike 454: column on the same row as the keyword.<table><thead><tr><th> Keyword
455: <th> State
456: <th> Brief description
1.461 mike 457: <tbody><tr><td><dfn aria-haspopup="true" id="attr-button-type-submit" role="button" tabindex="0"><code>submit</code></dfn>
1.576 ! mike 458: <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 459: <td>Submits the form.
1.461 mike 460: <tr><td><dfn aria-haspopup="true" id="attr-button-type-reset" role="button" tabindex="0"><code>reset</code></dfn>
1.576 ! mike 461: <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 462: <td>Resets the form.
1.461 mike 463: <tr><td><dfn aria-haspopup="true" id="attr-button-type-button" role="button" tabindex="0"><code>button</code></dfn>
1.576 ! mike 464: <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 465: <td>Does nothing.
1.576 ! mike 466: </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>
1.574 mike 467: state.<p>If the <code title="attr-button-type"><a href="#attr-button-type" id="type_76">type</a></code> attribute is in
1.576 ! mike 468: 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>
1.568 mike 469: 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
1.516 mike 470: explicitly associate the <code><a href="#the-button-element" id="button_12">button</a></code> element with its
1.574 mike 471: <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_39">name</a></code>
1.415 mike 472: 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 473: the control non-interactive and to prevent its value from being
1.415 mike 474: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus_2">autofocus</a></code>
475: 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
476: <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 477: be used to make submit buttons that do not trigger the constraint
1.415 mike 478: 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
1.574 mike 479: if the element's <code title="attr-button-type"><a href="#attr-button-type" id="type_77">type</a></code>
1.576 ! mike 480: 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>
1.461 mike 481: state.<p>The <dfn aria-haspopup="true" id="attr-button-value" role="button" tabindex="0"><code>value</code></dfn>
1.9 mike 482: attribute gives the element's value for the purposes of form
1.576 ! mike 483: 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
1.557 mike 484: <code title="attr-button-value"><a href="#attr-button-value" id="value_33">value</a></code> attribute, if there is
1.160 mike 485: one, or the empty string otherwise.<p class="note">A button (and its value) is only included in the
1.9 mike 486: form submission if the button itself was used to initiate the form
1.575 mike 487: submission.</p>
488: <p>The <dfn aria-haspopup="true" id="dom-button-value" role="button" tabindex="0"><code>value</code></dfn> IDL
1.574 mike 489: attribute must <a href="common-dom-interfaces.html#reflect" id="reflect_66">reflect</a> the content attribute of the
1.575 mike 490: same name.</p>
491:
492: <p>The <dfn aria-haspopup="true" id="dom-button-type" role="button" tabindex="0"><code>type</code></dfn> IDL
1.574 mike 493: attribute must <a href="common-dom-interfaces.html#reflect" id="reflect_67">reflect</a> the content attribute of the
1.576 ! mike 494: same name, <a class="full-spec-link" href="http://dev.w3.org/html5/spec/common-dom-interfaces.html#limited-to-only-known-values" title='Read about this "limited to only known values" reference in the full HTML5 spec.'>limited to only known values</a>.</p>
1.575 mike 495: <div class="example">
1.9 mike 496:
497: <p>The following button is labeled "Show hint" and pops up a dialog
498: box when activated:</p>
499:
500: <pre><button type=button
501: onclick="alert('This 15-20 minute piece was composed by George Gershwin.')">
502: Show hint
503: </button></pre>
504:
1.160 mike 505: </div>
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