Annotation of html5/spec-author-view/the-button-element.html, revision 1.359
1.354 mike 1: <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"><!-- when publishing, change bits marked ZZZ
2: ZZZ: Set PUB to 1 for TR/ drafts, 0 for dev drafts; PUB-Y lines are used if it's 1 and PUB-N lines if it's 0.
3: ZZZ: Set YEAR, SHORTDAY (month/day), and LONGDAY accordingly. They are used by the INSERT FOO bits below.
4: --><html class="split chapter" 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 5: pre { margin-left: 2em; white-space: pre-wrap; }
6: h2 { margin: 3em 0 1em 0; }
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1.34 mike 30: table thead, table tbody { border-bottom: solid; }
1.1 mike 31: table tbody th:first-child { border-left: solid; }
32: table tbody th { text-align: left; }
33: table td, table th { border-left: solid; border-right: solid; border-bottom: solid thin; vertical-align: top; padding: 0.2em; }
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42:
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1.23 mike 49: dl.domintro { color: green; margin: 2em 0 2em 2em; padding: 0.5em 1em; border: none; background: #DDFFDD; }
1.1 mike 50: hr + dl.domintro, div.impl + dl.domintro { margin-top: 2.5em; margin-bottom: 1.5em; }
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62: .diff-chg, .diff-new { text-decoration: underline; color: green; background: transparent; }
63: a .diff-new { border-bottom: 1px blue solid; }
64:
65: h2 { page-break-before: always; }
66: h1, h2, h3, h4, h5, h6 { page-break-after: avoid; }
67: h1 + h2, hr + h2.no-toc { page-break-before: auto; }
68:
1.306 mike 69: p > span:not([title=""]):not([class="XXX"]):not([class="impl"]):not([class="note"]),
70: li > span:not([title=""]):not([class="XXX"]):not([class="impl"]):not([class="note"]), { border-bottom: solid #9999CC; }
1.1 mike 71:
72: div.head { margin: 0 0 1em; padding: 1em 0 0 0; }
73: div.head p { margin: 0; }
74: div.head h1 { margin: 0; }
75: div.head .logo { float: right; margin: 0 1em; }
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79:
80: body > .toc > li { margin-top: 1em; margin-bottom: 1em; }
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86: .brief { margin-top: 1em; margin-bottom: 1em; line-height: 1.1; }
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93: .category-list li:not(:last-child)::after { content: ', '; }
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1.132 mike 119: .bookkeeping dt { margin: 0.5em 2em 0; }
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1.1 mike 121:
122: h4 { position: relative; z-index: 3; }
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149:
150: ul.domTree, ul.domTree ul { padding: 0 0 0 1em; margin: 0; }
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156: ul.domTree .t1 code { color: purple; font-weight: bold; }
157: ul.domTree .t2 { font-style: normal; font-family: monospace; }
158: ul.domTree .t2 .name { color: black; font-weight: bold; }
159: ul.domTree .t2 .value { color: blue; font-weight: normal; }
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162: ul.domTree .t10 code { color: teal; }
163:
1.14 mike 164: body.dfnEnabled dfn { cursor: pointer; }
165: .dfnPanel {
166: display: inline;
167: position: absolute;
168: z-index: 10;
169: height: auto;
170: width: auto;
171: padding: 0.5em 0.75em;
172: font: small sans-serif, Droid Sans Fallback;
173: background: #DDDDDD;
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175: border: outset 0.2em;
176: }
177: .dfnPanel * { margin: 0; padding: 0; font: inherit; text-indent: 0; }
178: .dfnPanel :link, .dfnPanel :visited { color: black; }
179: .dfnPanel p { font-weight: bolder; }
180: .dfnPanel * + p { margin-top: 0.25em; }
181: .dfnPanel li { list-style-position: inside; }
182:
1.1 mike 183: #configUI { position: absolute; z-index: 20; top: 10em; right: 1em; width: 11em; font-size: small; }
184: #configUI p { margin: 0.5em 0; padding: 0.3em; background: #EEEEEE; color: black; border: inset thin; }
185: #configUI p label { display: block; }
186: #configUI #updateUI, #configUI .loginUI { text-align: center; }
187: #configUI input[type=button] { display: block; margin: auto; }
1.121 mike 188:
1.321 mike 189: fieldset { margin: 1em; padding: 0.5em 1em; }
190: fieldset > legend + * { margin-top: 0; }
1.293 mike 191: fieldset > :last-child { margin-bottom: 0; }
1.321 mike 192: fieldset p { margin: 0.5em 0; }
193:
194: .stability {
195: position: fixed;
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198: margin: 0 auto 0 auto;
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209: }
210: .stability strong {
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212: }
1.325 mike 213: .stability input {
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215: position: absolute; top: -0.5em; right: 0; font: 1.25em sans-serif; text-align: center;
216: }
217: .stability input:hover {
218: color: white;
219: text-shadow: 0 0 2px black;
220: }
221: .stability input:active {
222: padding: 0.3em 0.45em 0.2em 0.55em;
223: }
1.321 mike 224: .stability :link, .stability :visited,
225: .stability :link:hover, .stability :visited:hover {
226: background: transparent;
227: color: white;
228: }
1.293 mike 229:
1.354 mike 230: </style><link href="http://www.w3.org/StyleSheets/TR/W3C-WD" rel="stylesheet" type="text/css"><link href="style.css" rel="stylesheet"><script src="link-fixup.js"></script><style type="text/css">
1.1 mike 231:
232: .applies thead th > * { display: block; }
233: .applies thead code { display: block; }
234: .applies tbody th { whitespace: nowrap; }
235: .applies td { text-align: center; }
236: .applies .yes { background: yellow; }
237:
1.136 mike 238: .matrix, .matrix td { border: hidden; text-align: right; }
1.1 mike 239: .matrix { margin-left: 2em; }
240:
241: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
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243: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
244:
1.213 mike 245: td.eg { border-width: thin; text-align: center; }
246:
1.1 mike 247: #table-example-1 { border: solid thin; border-collapse: collapse; margin-left: 3em; }
248: #table-example-1 * { font-family: "Essays1743", serif; line-height: 1.01em; }
249: #table-example-1 caption { padding-bottom: 0.5em; }
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251: #table-example-1 th, #table-example-1 td { border: solid thin; }
252: #table-example-1 th { font-weight: normal; }
253: #table-example-1 td { border-style: none solid; vertical-align: top; }
254: #table-example-1 th { padding: 0.5em; vertical-align: middle; text-align: center; }
255: #table-example-1 tbody tr:first-child td { padding-top: 0.5em; }
256: #table-example-1 tbody tr:last-child td { padding-bottom: 1.5em; }
257: #table-example-1 tbody td:first-child { padding-left: 2.5em; padding-right: 0; width: 9em; }
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259: #table-example-1 tbody td { padding-left: 2em; padding-right: 2em; }
260: #table-example-1 tbody td:first-child + td { width: 10em; }
261: #table-example-1 tbody td:first-child + td ~ td { width: 2.5em; }
262: #table-example-1 tbody td:first-child + td + td + td ~ td { width: 1.25em; }
263:
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267: .apple-table-examples tbody th:first-child { border-left: none; width: 100%; }
268: .apple-table-examples thead th:first-child ~ th { font-size: smaller; font-weight: bolder; border-bottom: solid 2px; text-align: center; }
269: .apple-table-examples tbody th::after, .apple-table-examples tfoot th::after { content: leader(". ") }
270: .apple-table-examples tbody th, .apple-table-examples tfoot th { font: inherit; text-align: left; }
271: .apple-table-examples td { text-align: right; vertical-align: top; }
272: .apple-table-examples.e1 tbody tr:last-child td { border-bottom: solid 1px; }
1.9 mike 273: .apple-table-examples.e1 tbody + tbody tr:last-child td { border-bottom: double 3px; }
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275: .apple-table-examples sup { line-height: 0; }
276:
1.11 mike 277: .details-example img { vertical-align: top; }
278:
1.26 mike 279: #named-character-references-table {
1.257 mike 280: white-space: nowrap;
1.26 mike 281: font-size: 0.6em;
1.257 mike 282: column-width: 30em;
1.26 mike 283: column-gap: 1em;
1.257 mike 284: -moz-column-width: 30em;
1.26 mike 285: -moz-column-gap: 1em;
1.257 mike 286: -webkit-column-width: 30em;
1.26 mike 287: -webkit-column-gap: 1em;
288: }
1.257 mike 289: #named-character-references-table > table > tbody > tr > td:first-child + td,
1.26 mike 290: #named-character-references-table > table > tbody > tr > td:last-child { text-align: center; }
291: #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 292: #named-character-references-table > table > tbody > tr#entity-CounterClockwiseContourIntegral > td:first-child { font-size: 0.5em; }
1.26 mike 293:
1.35 mike 294: .glyph.control { color: red; }
295:
1.38 mike 296: @font-face {
297: font-family: 'Essays1743';
298: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743.ttf');
299: }
300: @font-face {
301: font-family: 'Essays1743';
302: font-weight: bold;
303: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-Bold.ttf');
304: }
305: @font-face {
306: font-family: 'Essays1743';
307: font-style: italic;
308: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-Italic.ttf');
309: }
310: @font-face {
311: font-family: 'Essays1743';
312: font-style: italic;
313: font-weight: bold;
314: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-BoldItalic.ttf');
315: }
316:
1.25 mike 317: </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">
1.157 mike 318: function getCookie(name) {
319: var params = location.search.substr(1).split("&");
320: for (var index = 0; index < params.length; index++) {
321: if (params[index] == name)
322: return "1";
323: var data = params[index].split("=");
324: if (data[0] == name)
325: return unescape(data[1]);
1.9 mike 326: }
1.157 mike 327: var cookies = document.cookie.split("; ");
328: for (var index = 0; index < cookies.length; index++) {
329: var data = cookies[index].split("=");
330: if (data[0] == name)
331: return unescape(data[1]);
1.9 mike 332: }
1.157 mike 333: return null;
334: }
335: function load(script) {
336: var e = document.createElement('script');
337: e.setAttribute('src', script + '?' + encodeURIComponent(location) + '&' + encodeURIComponent(document.referrer));
338: document.body.appendChild(e);
339: }
340: function init() {
341: if (location.search == '?slow-browser')
342: return;
343: var configUI = document.createElement('div');
344: configUI.id = 'configUI';
345: document.body.appendChild(configUI);
346: if (document.getElementById('head'))
347: load('toc.js');
348: load('dfn.js');
349: if (getCookie('profile') == '1')
350: document.getElementsByTagName('h2')[0].textContent += '; load: ' + (new Date() - loadTimer) + 'ms';
351: fixBrokenLink();
352: }
1.354 mike 353: </script><link href="common-input-element-attributes.html" rel="prev" title="4.10.7.2 Common input element attributes">
1.160 mike 354: <link href="Overview.html#contents" rel="index" title="Table of contents">
355: <link href="association-of-controls-and-forms.html" rel="next" title="4.10.18 Association of controls and forms">
356: <body onload="fixBrokenLink(); init()"><div class="head" id="head">
1.9 mike 357: <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 358:
1.359 ! mike 359: <h1>HTML5 <span class="edition">Edition for Web Authors</span> <span class="rcsrevision">revision 1.4589</span></h1>
1.9 mike 360: </div><div>
1.320 mike 361: <a href="common-input-element-attributes.html">← 4.10.7.2 Common input element attributes</a> –
1.160 mike 362: <a href="Overview.html#contents">Table of contents</a> –
1.320 mike 363: <a href="association-of-controls-and-forms.html">4.10.18 Association of controls and forms →</a>
1.160 mike 364: <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 365:
1.202 mike 366: <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>
1.321 mike 367: <dd><a href="content-models.html#flow-content" id="flow-content-125">Flow content</a>.</dd>
368: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-133">Phrasing content</a>.</dd>
1.156 mike 369: <dd><a href="content-models.html#interactive-content" id="interactive-content-14">Interactive content</a>.</dd>
1.202 mike 370: <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 371: <dt>Contexts in which this element can be used:</dt>
1.321 mike 372: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content-134">phrasing content</a> is expected.</dd>
1.9 mike 373: <dt>Content model:</dt>
1.321 mike 374: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-135">Phrasing content</a>, but there must be no <a href="content-models.html#interactive-content" id="interactive-content-15">interactive content</a> descendant.</dd>
1.9 mike 375: <dt>Content attributes:</dt>
1.321 mike 376: <dd><a href="elements.html#global-attributes" id="global-attributes-88">Global attributes</a></dd>
1.156 mike 377: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus-1">autofocus</a></code></dd>
378: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled-12">disabled</a></code></dd>
1.262 mike 379: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form-49">form</a></code></dd>
1.156 mike 380: <dd><code title="attr-fs-formaction"><a href="association-of-controls-and-forms.html#attr-fs-formaction" id="formaction-26">formaction</a></code></dd>
381: <dd><code title="attr-fs-formenctype"><a href="association-of-controls-and-forms.html#attr-fs-formenctype" id="formenctype-26">formenctype</a></code></dd>
382: <dd><code title="attr-fs-formmethod"><a href="association-of-controls-and-forms.html#attr-fs-formmethod" id="formmethod-26">formmethod</a></code></dd>
383: <dd><code title="attr-fs-formnovalidate"><a href="association-of-controls-and-forms.html#attr-fs-formnovalidate" id="formnovalidate-27">formnovalidate</a></code></dd>
384: <dd><code title="attr-fs-formtarget"><a href="association-of-controls-and-forms.html#attr-fs-formtarget" id="formtarget-26">formtarget</a></code></dd>
385: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name-37">name</a></code></dd>
1.213 mike 386: <dd><code title="attr-button-type"><a href="#attr-button-type" id="type-75">type</a></code></dd>
1.255 mike 387: <dd><code title="attr-button-value"><a href="#attr-button-value" id="value-30">value</a></code></dd>
1.9 mike 388: <dt>DOM interface:</dt>
389: <dd>
1.321 mike 390: <pre class="idl">interface <dfn id="htmlbuttonelement">HTMLButtonElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-96">HTMLElement</a> {
1.162 mike 391: 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>;
392: 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>;
393: 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>;
394: 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>;
395: 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>;
396: 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>;
397: 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>;
398: 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>;
399: 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>;
400: 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>;
401: 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>;
402:
403: 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>;
404: 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>;
405: 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>;
406: 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>();
407: 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 408:
1.162 mike 409: 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 410: };</pre>
411: </dd>
1.162 mike 412: </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
1.160 mike 413: 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 414: attribute controls the behavior of the button when it is activated.
1.304 mike 415: It is an <a href="common-microsyntaxes.html#enumerated-attribute" id="enumerated-attribute-9">enumerated attribute</a>. The following table
1.160 mike 416: lists the keywords and states for the attribute — the keywords
1.9 mike 417: in the left column map to the states in the cell in the second
1.160 mike 418: column on the same row as the keyword.<table><thead><tr><th> Keyword
419: <th> State
420: <th> Brief description
421: <tbody><tr><td><dfn id="attr-button-type-submit" title="attr-button-type-submit"><code>submit</code></dfn>
1.162 mike 422: <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 423: <td>Submits the form.
424: <tr><td><dfn id="attr-button-type-reset" title="attr-button-type-reset"><code>reset</code></dfn>
1.162 mike 425: <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 426: <td>Resets the form.
427: <tr><td><dfn id="attr-button-type-button" title="attr-button-type-button"><code>button</code></dfn>
1.162 mike 428: <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 429: <td>Does nothing.
1.162 mike 430: </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>
1.213 mike 431: 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 432: 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>
1.262 mike 433: 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
1.156 mike 434: explicitly associate the <code><a href="#the-button-element" id="button-12">button</a></code> element with its
435: <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>
436: 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-13">disabled</a></code> attribute is used to make
1.9 mike 437: the control non-interactive and to prevent its value from being
1.156 mike 438: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus-2">autofocus</a></code>
439: 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
1.160 mike 440: <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 441: be used to make submit buttons that do not trigger the constraint
1.160 mike 442: 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
1.213 mike 443: if the element's <code title="attr-button-type"><a href="#attr-button-type" id="type-77">type</a></code>
1.162 mike 444: 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 445: state.<p>The <dfn id="attr-button-value" title="attr-button-value"><code>value</code></dfn>
1.9 mike 446: attribute gives the element's value for the purposes of form
1.162 mike 447: 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
1.255 mike 448: <code title="attr-button-value"><a href="#attr-button-value" id="value-31">value</a></code> attribute, if there is
1.160 mike 449: one, or the empty string otherwise.<p class="note">A button (and its value) is only included in the
1.9 mike 450: form submission if the button itself was used to initiate the form
1.160 mike 451: submission.<div class="example">
1.9 mike 452:
453: <p>The following button is labeled "Show hint" and pops up a dialog
454: box when activated:</p>
455:
456: <pre><button type=button
457: onclick="alert('This 15-20 minute piece was composed by George Gershwin.')">
458: Show hint
459: </button></pre>
460:
1.202 mike 461: </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>
1.321 mike 462: <dd><a href="content-models.html#flow-content" id="flow-content-126">Flow content</a>.</dd>
463: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-136">Phrasing content</a>.</dd>
1.156 mike 464: <dd><a href="content-models.html#interactive-content" id="interactive-content-16">Interactive content</a>.</dd>
1.202 mike 465: <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 466: <dt>Contexts in which this element can be used:</dt>
1.321 mike 467: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content-137">phrasing content</a> is expected.</dd>
1.9 mike 468: <dt>Content model:</dt>
1.191 mike 469: <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 470: <dt>Content attributes:</dt>
1.321 mike 471: <dd><a href="elements.html#global-attributes" id="global-attributes-89">Global attributes</a></dd>
1.156 mike 472: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus-3">autofocus</a></code></dd>
473: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled-14">disabled</a></code></dd>
1.262 mike 474: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form-51">form</a></code></dd>
1.156 mike 475: <dd><code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple-29">multiple</a></code></dd>
476: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name-39">name</a></code></dd>
1.234 mike 477: <dd><code title="attr-select-required"><a href="#attr-select-required" id="required-28">required</a></code></dd>
1.156 mike 478: <dd><code title="attr-select-size"><a href="#attr-select-size" id="size-30">size</a></code></dd>
1.9 mike 479: <dt>DOM interface:</dt>
480: <dd>
1.321 mike 481: <pre class="idl">interface <dfn id="htmlselectelement">HTMLSelectElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-97">HTMLElement</a> {
1.162 mike 482: 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>;
483: 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>;
484: 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>;
485: 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>;
486: 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 487: 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 488: 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 489:
1.162 mike 490: 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 491:
1.162 mike 492: readonly attribute <a href="urls.html#htmloptionscollection" id="htmloptionscollection-3">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>;
493: 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 494: 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);
495: 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);
1.321 mike 496: 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-98">HTMLElement</a> element, in optional <a href="elements.html#htmlelement" id="htmlelement-99">HTMLElement</a> before);
497: 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-100">HTMLElement</a> element, in long before);
1.162 mike 498: 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);
499:
1.202 mike 500: readonly attribute <a href="urls.html#htmlcollection" id="htmlcollection-34">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 501: 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>;
502: 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>;
503:
504: 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>;
505: 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>;
506: 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>;
507: 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>();
508: 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 509:
1.162 mike 510: 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 511: };</pre>
512: </dd>
513: </dl><!-- Proposals for v2:
514: * <select value=""> as an alternative to <option selected>
515: http://developers.slashdot.org/comments.pl?sid=426306&cid=22142072
1.11 mike 516: <Philip`> http://www.ipiao.com.cn/ does <select size="1" name="to"><script type="text/javascript">City_Default="PEK"</script><SCRIPT language=javascript
1.9 mike 517: src="/js/flightcity.js"></SCRIPT></select> which is the kind of thing that could be much simpler with <select value="PEK">
1.234 mike 518: --><p>The <code><a href="#the-select-element" id="select-18">select</a></code> element represents a control for
1.160 mike 519: selecting amongst a set of options.<p>The <dfn id="attr-select-multiple" title="attr-select-multiple"><code>multiple</code></dfn>
1.156 mike 520: attribute is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute-13">boolean attribute</a>. If the attribute is
1.234 mike 521: present, then the <code><a href="#the-select-element" id="select-19">select</a></code> element
1.162 mike 522: <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
1.156 mike 523: from the <a href="#concept-select-option-list" id="concept-select-option-list-1" title="concept-select-option-list">list of
1.9 mike 524: options</a>. If the attribute is absent, then the
1.234 mike 525: <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
1.160 mike 526: 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>
1.156 mike 527: 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
528: 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>
529: greater than zero. If the <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple-30">multiple</a></code> attribute is present,
530: 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
531: default value is 4. If the <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple-31">multiple</a></code> attribute is absent,
532: 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 533: default value is 1.<p>The <dfn id="concept-select-option-list" title="concept-select-option-list">list of options</dfn>
1.234 mike 534: for a <code><a href="#the-select-element" id="select-21">select</a></code> element consists of all the
535: <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>
1.191 mike 536: element, and all the <code><a href="#the-option-element" id="option-11">option</a></code> element children of all the
1.234 mike 537: <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>
1.322 mike 538: 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>
1.156 mike 539: attribute is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute-14">boolean attribute</a>. When specified, the
1.138 mike 540: user will be required to select a value before submitting the
1.234 mike 541: 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,
1.156 mike 542: does not have a <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple-32">multiple</a></code>
1.162 mike 543: 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
1.156 mike 544: <a href="#concept-option-value" id="concept-option-value-0" title="concept-option-value">value</a> of the first
1.234 mike 545: <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
1.156 mike 546: <a href="#concept-select-option-list" id="concept-select-option-list-3" title="concept-select-option-list">list of options</a> (if
1.191 mike 547: 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
1.234 mike 548: <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>
1.190 mike 549: element (and not an <code><a href="#the-optgroup-element" id="optgroup-5">optgroup</a></code> element), then that
1.234 mike 550: <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
1.262 mike 551: <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
1.234 mike 552: explicitly associate the <code><a href="#the-select-element" id="select-28">select</a></code> element with its
1.156 mike 553: <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>
554: 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-15">disabled</a></code> attribute is used to make
1.9 mike 555: the control non-interactive and to prevent its value from being
1.156 mike 556: 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 557: 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 558:
559: <dd>
560:
561: <p>Returns "<code title="">select-multiple</code>" if the element
1.156 mike 562: has a <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple-33">multiple</a></code>
1.9 mike 563: attribute, and "<code title="">select-one</code>"
564: otherwise.</p>
565:
566: </dd>
567:
1.162 mike 568: <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 569:
570: <dd>
571:
1.156 mike 572: <p>Returns an <code><a href="urls.html#htmloptionscollection" id="htmloptionscollection-4">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 573:
574: </dd>
575:
1.162 mike 576: <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 577: <dd>
1.156 mike 578: <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>
1.234 mike 579: <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>
580: <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 581: </dd>
582:
1.162 mike 583: <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 584: <dt><var title="">select</var>[<var title="">index</var>]</dt>
585: <dd>
1.322 mike 586: <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 587: <p>Returns null if <var title="">index</var> is out of range.</p>
588: </dd>
589:
1.162 mike 590: <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 591: <dd>
1.201 mike 592: <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 593: <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>
1.201 mike 594: <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 595: </dd>
596:
1.162 mike 597: <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 598: <dd>
599: <p>Inserts <var title="">element</var> before the node given by <var title="">before</var>.</p>
600: <p>The <var title="">before</var> argument can be a number, in
601: which case <var title="">element</var> is inserted before the item
1.156 mike 602: 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 603: which case <var title="">element</var> is inserted before that
604: element.</p>
605: <p>If <var title="">before</var> is omitted, null, or a number out
606: of range, then <var title="">element</var> will be added at the
607: end of the list.</p>
1.156 mike 608: <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 609: exception if <var title="">element</var> is an ancestor of the
1.191 mike 610: 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
1.190 mike 611: <code><a href="#the-optgroup-element" id="optgroup-6">optgroup</a></code> element, then the method does nothing.</p>
1.9 mike 612: </dd>
613:
1.162 mike 614: <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 615:
616: <dd>
617:
1.202 mike 618: <p>Returns an <code><a href="urls.html#htmlcollection" id="htmlcollection-35">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 619: selected.</p>
620:
621: </dd>
622:
1.162 mike 623: <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 624:
625: <dd>
626:
627: <p>Returns the index of the first selected item, if any, or
1.160 mike 628: −1 if there is no selected item.</p>
1.9 mike 629:
630: <p>Can be set, to change the selection.</p>
631:
632: </dd>
633:
1.162 mike 634: <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 635:
636: <dd>
637:
1.162 mike 638: <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 639: first selected item, if any, or the empty string if there is no
640: selected item.</p>
641:
642: <p>Can be set, to change the selection.</p>
643:
644: </dd>
645:
646: </dl><div class="example">
647:
1.234 mike 648: <p>The following example shows how a <code><a href="#the-select-element" id="select-31">select</a></code> element
1.9 mike 649: can be used to offer the user with a set of options from which the
650: user can select a single option. The default option is
651: preselected.</p>
652:
653: <pre><p>
654: <label for="unittype">Select unit type:</label>
655: <select id="unittype" name="unittype">
656: <option value="1"> Miner </option>
657: <option value="2"> Puffer </option>
658: <option value="3" selected> Snipey </option>
659: <option value="4"> Max </option>
660: <option value="5"> Firebot </option>
661: </select>
662: </p></pre>
663:
664: </div><div class="example">
665:
666: <p>Here, the user is offered a set of options from which he can
667: select any number. By default, all five options are selected.</p>
668:
669: <pre><p>
670: <label for="allowedunits">Select unit types to enable on this map:</label>
671: <select id="allowedunits" name="allowedunits" multiple>
672: <option value="1" selected> Miner </option>
673: <option value="2" selected> Puffer </option>
674: <option value="3" selected> Snipey </option>
675: <option value="4" selected> Max </option>
676: <option value="5" selected> Firebot </option>
677: </select>
678: </p></pre>
679:
1.202 mike 680: </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>
1.321 mike 681: <dd><a href="content-models.html#flow-content" id="flow-content-127">Flow content</a>.</dd>
682: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-138">Phrasing content</a>.</dd>
1.203 mike 683: <dt>Contexts in which this element can be used:</dt>
1.321 mike 684: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content-139">phrasing content</a> is expected.</dd>
1.9 mike 685: <dt>Content model:</dt>
1.321 mike 686: <dd>Either: <a href="content-models.html#phrasing-content" id="phrasing-content-140">phrasing content</a>.</dd>
1.191 mike 687: <dd>Or: Zero or more <code><a href="#the-option-element" id="option-19">option</a></code> elements.</dd>
1.9 mike 688: <dt>Content attributes:</dt>
1.321 mike 689: <dd><a href="elements.html#global-attributes" id="global-attributes-90">Global attributes</a></dd>
1.9 mike 690: <dt>DOM interface:</dt>
691: <dd>
1.321 mike 692: <pre class="idl">interface <dfn id="htmldatalistelement">HTMLDataListElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-101">HTMLElement</a> {
1.202 mike 693: readonly attribute <a href="urls.html#htmlcollection" id="htmlcollection-36">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 694: };</pre>
695: </dd>
1.156 mike 696: </dl><p>The <code><a href="#the-datalist-element" id="datalist-13">datalist</a></code> element represents a set of
1.191 mike 697: <code><a href="#the-option-element" id="option-20">option</a></code> elements that represent predefined options for
1.9 mike 698: other controls. The contents of the element represents fallback
1.191 mike 699: content for legacy user agents, intermixed with <code><a href="#the-option-element" id="option-21">option</a></code>
1.9 mike 700: elements that represent the predefined options. In the rendering,
1.162 mike 701: 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>
1.160 mike 702: nothing.<p>The <code><a href="#the-datalist-element" id="datalist-15">datalist</a></code> element is hooked up to an
1.323 mike 703: <code><a href="the-input-element.html#the-input-element" id="input-118">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
704: <code><a href="the-input-element.html#the-input-element" id="input-119">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
1.156 mike 705: <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
706: 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 707:
1.162 mike 708: <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 709:
710: <dd>
1.202 mike 711: <p>Returns an <code><a href="urls.html#htmlcollection" id="htmlcollection-37">HTMLCollection</a></code> of the <code>options</code> elements of the table.</p>
1.9 mike 712: </dd>
713:
1.202 mike 714: </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 715: <dd>None.</dd>
1.203 mike 716: <dt>Contexts in which this element can be used:</dt>
1.234 mike 717: <dd>As a child of a <code><a href="#the-select-element" id="select-32">select</a></code> element.</dd>
1.9 mike 718: <dt>Content model:</dt>
1.191 mike 719: <dd>Zero or more <code><a href="#the-option-element" id="option-23">option</a></code> elements.</dd>
1.9 mike 720: <dt>Content attributes:</dt>
1.321 mike 721: <dd><a href="elements.html#global-attributes" id="global-attributes-91">Global attributes</a></dd>
1.156 mike 722: <dd><code title="attr-optgroup-disabled"><a href="#attr-optgroup-disabled" id="disabled-3">disabled</a></code></dd>
1.304 mike 723: <dd><code title="attr-optgroup-label"><a href="#attr-optgroup-label" id="label-31">label</a></code></dd>
1.9 mike 724: <dt>DOM interface:</dt>
725: <dd>
1.321 mike 726: <pre class="idl">interface <dfn id="htmloptgroupelement">HTMLOptGroupElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-102">HTMLElement</a> {
1.162 mike 727: 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>;
728: 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 729: };</pre>
730: </dd>
1.190 mike 731: </dl><!-- v2: make optgroups selectable if they have a value. --><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
1.191 mike 732: <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
733: the <code><a href="#the-option-element" id="option-26">option</a></code> elements that are children of the
1.190 mike 734: <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
1.156 mike 735: 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
1.191 mike 736: <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 737: attribute must be specified. Its value gives the name of the group,
1.160 mike 738: for the purposes of the user interface. <div class="example">
1.9 mike 739:
740: <p>The following snippet shows how a set of lessons from three
1.234 mike 741: courses could be offered in a <code><a href="#the-select-element" id="select-33">select</a></code> drop-down
1.9 mike 742: widget:</p>
743:
744: <pre><form action="courseselector.dll" method="get">
745: <p>Which course would you like to watch today?
746: <p><label>Course:
747: <select name="c">
748: <optgroup label="8.01 Physics I: Classical Mechanics">
749: <option value="8.01.1">Lecture 01: Powers of Ten
750: <option value="8.01.2">Lecture 02: 1D Kinematics
751: <option value="8.01.3">Lecture 03: Vectors
752: <optgroup label="8.02 Electricity and Magnestism">
753: <option value="8.02.1">Lecture 01: What holds our world together?
754: <option value="8.02.2">Lecture 02: Electric Field
755: <option value="8.02.3">Lecture 03: Electric Flux
756: <optgroup label="8.03 Physics III: Vibrations and Waves">
757: <option value="8.03.1">Lecture 01: Periodic Phenomenon
758: <option value="8.03.2">Lecture 02: Beats
759: <option value="8.03.3">Lecture 03: Forced Oscillations with Damping
760: </select>
761: </label>
1.320 mike 762: <p><input type=submit value="▶ Play">
1.9 mike 763: </form></pre>
764:
1.202 mike 765: </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 766: <dd>None.</dd>
1.203 mike 767: <dt>Contexts in which this element can be used:</dt>
1.234 mike 768: <dd>As a child of a <code><a href="#the-select-element" id="select-34">select</a></code> element.</dd>
1.156 mike 769: <dd>As a child of a <code><a href="#the-datalist-element" id="datalist-17">datalist</a></code> element.</dd>
1.190 mike 770: <dd>As a child of an <code><a href="#the-optgroup-element" id="optgroup-9">optgroup</a></code> element.</dd>
1.9 mike 771: <dt>Content model:</dt>
1.156 mike 772: <dd><a href="content-models.html#text-content" id="text-content-4" title="text content">Text</a>.</dd>
1.9 mike 773: <dt>Content attributes:</dt>
1.321 mike 774: <dd><a href="elements.html#global-attributes" id="global-attributes-92">Global attributes</a></dd>
1.156 mike 775: <dd><code title="attr-option-disabled"><a href="#attr-option-disabled" id="disabled-6">disabled</a></code></dd>
1.304 mike 776: <dd><code title="attr-option-label"><a href="#attr-option-label" id="label-33">label</a></code></dd>
1.156 mike 777: <dd><code title="attr-option-selected"><a href="#attr-option-selected" id="selected-0">selected</a></code></dd>
1.255 mike 778: <dd><code title="attr-option-value"><a href="#attr-option-value" id="value-34">value</a></code></dd>
1.9 mike 779: <dt>DOM interface:</dt>
780: <dd>
1.162 mike 781: <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>(),
782: 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),
783: 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),
784: 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),
785: 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)]
1.321 mike 786: interface <dfn id="htmloptionelement">HTMLOptionElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-103">HTMLElement</a> {
1.162 mike 787: 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>;
788: 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>;
789: 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>;
790: 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>;
791: 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>;
792: 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 793:
1.162 mike 794: 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>;
795: 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 796: };</pre>
797: </dd>
1.191 mike 798: </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
1.234 mike 799: in a <code><a href="#the-select-element" id="select-35">select</a></code> element or as part of a list of suggestions
1.160 mike 800: 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
1.234 mike 801: <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
802: <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>.
1.156 mike 803: A <a href="#placeholder-label-option" id="placeholder-label-option-1">placeholder label option</a> does not represent an actual
1.234 mike 804: option, but instead represents a label for the <code><a href="#the-select-element" id="select-38">select</a></code>
1.160 mike 805: control.<p>The <dfn id="attr-option-disabled" title="attr-option-disabled"><code>disabled</code></dfn>
1.156 mike 806: attribute is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute-16">boolean attribute</a>. An
1.191 mike 807: <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
1.190 mike 808: 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 809: present.<p>The <dfn id="attr-option-label" title="attr-option-label"><code>label</code></dfn>
1.191 mike 810: 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>
1.304 mike 811: 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 812: 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>
1.191 mike 813: 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>
1.255 mike 814: 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 815: 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>
1.298 mike 816: attribute is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute-17">boolean attribute</a>. It represents the
817: 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
1.234 mike 818: 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-34">multiple</a></code> attribute is not
1.191 mike 819: specified must not have more than one descendant <code><a href="#the-option-element" id="option-33">option</a></code>
1.156 mike 820: element with its <code title="attr-option-selected"><a href="#attr-option-selected" id="selected-1">selected</a></code>
1.162 mike 821: 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 822:
823: <dd>
824:
825: <p>Returns true if the element is selected, and false otherwise.</p>
826:
1.202 mike 827: <p>Can be set, to override the current state of the element.</p>
828:
1.9 mike 829: </dd>
830:
1.162 mike 831: <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 832:
833: <dd>
834:
1.234 mike 835: <p>Returns the index of the element in its <code><a href="#the-select-element" id="select-40">select</a></code>
1.162 mike 836: 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 837: list.</p>
838:
839: </dd>
840:
1.162 mike 841: <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 842:
843: <dd>
844:
1.262 mike 845: <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 846: null otherwise.</p>
847:
848: </dd>
849:
1.162 mike 850: <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 851:
852: <dd>
853:
1.206 mike 854: <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 855:
856: </dd>
857:
1.162 mike 858: <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 859:
860: <dd>
861:
1.191 mike 862: <p>Returns a new <code><a href="#the-option-element" id="option-34">option</a></code> element.</p>
1.9 mike 863:
864: <p>The <var title="">text</var> argument sets the contents of the element.</p>
1.255 mike 865: <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>
1.156 mike 866: <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 867: <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>
868:
869: </dd>
870:
1.202 mike 871: </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>
1.321 mike 872: <dd><a href="content-models.html#flow-content" id="flow-content-128">Flow content</a>.</dd>
873: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-141">Phrasing content</a>.</dd>
1.156 mike 874: <dd><a href="content-models.html#interactive-content" id="interactive-content-17">Interactive content</a>.</dd>
1.202 mike 875: <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 876: <dt>Contexts in which this element can be used:</dt>
1.321 mike 877: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content-142">phrasing content</a> is expected.</dd>
1.9 mike 878: <dt>Content model:</dt>
1.156 mike 879: <dd><a href="content-models.html#text-content" id="text-content-5" title="text content">Text</a>.</dd>
1.9 mike 880: <dt>Content attributes:</dt>
1.321 mike 881: <dd><a href="elements.html#global-attributes" id="global-attributes-93">Global attributes</a></dd>
1.156 mike 882: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus-5">autofocus</a></code></dd>
883: <dd><code title="attr-textarea-cols"><a href="#attr-textarea-cols" id="cols">cols</a></code></dd>
884: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled-16">disabled</a></code></dd>
1.323 mike 885: <dd><code title="attr-textarea-dirname"><a href="#attr-textarea-dirname" id="dirname-26">dirname</a></code></dd>
1.262 mike 886: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form-53">form</a></code></dd>
1.156 mike 887: <dd><code title="attr-textarea-maxlength"><a href="#attr-textarea-maxlength" id="maxlength-27">maxlength</a></code></dd>
888: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name-41">name</a></code></dd>
889: <dd><code title="attr-textarea-placeholder"><a href="#attr-textarea-placeholder" id="placeholder-28">placeholder</a></code></dd>
1.187 mike 890: <dd><code title="attr-textarea-readonly"><a href="#attr-textarea-readonly" id="readonly-41">readonly</a></code></dd>
1.234 mike 891: <dd><code title="attr-textarea-required"><a href="#attr-textarea-required" id="required-32">required</a></code></dd>
1.156 mike 892: <dd><code title="attr-textarea-rows"><a href="#attr-textarea-rows" id="rows">rows</a></code></dd>
893: <dd><code title="attr-textarea-wrap"><a href="#attr-textarea-wrap" id="wrap">wrap</a></code></dd>
1.9 mike 894: <dt>DOM interface:</dt>
895: <dd>
1.321 mike 896: <pre class="idl">interface <dfn id="htmltextareaelement">HTMLTextAreaElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-104">HTMLElement</a> {
1.162 mike 897: 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>;
898: 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>;
899: 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>;
1.323 mike 900: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/.html#dom-textarea-dirname" title='Read about this "dirName" reference in the full HTML5 spec.'>dirName</a>;
1.162 mike 901: 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>;
902: 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>;
903: 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>;
904: 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>;
905: 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>;
906: 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>;
907: 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>;
908: 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>;
909:
910: 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>;
911: 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>;
912: 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>;
913: 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>;
914:
915: 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>;
916: 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>;
917: 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>;
918: 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>();
919: 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);
920:
921: 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>;
922:
923: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/editing.html#dom-textarea-input-select" title='Read about this "select" reference in the full HTML5 spec.'>select</a>();
924: attribute unsigned long <a class="full-spec-link" href="http://dev.w3.org/html5/spec/editing.html#dom-textarea-input-selectionstart" title='Read about this "selectionStart" reference in the full HTML5 spec.'>selectionStart</a>;
925: attribute unsigned long <a class="full-spec-link" href="http://dev.w3.org/html5/spec/editing.html#dom-textarea-input-selectionend" title='Read about this "selectionEnd" reference in the full HTML5 spec.'>selectionEnd</a>;
926: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/editing.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 927: };</pre>
928: </dd>
1.323 mike 929: </dl><p>The <code><a href="#the-textarea-element" id="textarea-23">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 930: multiline plain text edit control. The contents of the control represent the
1.160 mike 931: control's default value.<p>The <dfn id="attr-textarea-readonly" title="attr-textarea-readonly"><code>readonly</code></dfn> attribute
1.298 mike 932: 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 933: 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 934: attribute specifies the expected maximum number of characters per
1.156 mike 935: line. If the <code title="attr-textarea-cols"><a href="#attr-textarea-cols" id="cols-0">cols</a></code> attribute
936: 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 937: integer</a> greater than zero. <p>The <dfn id="attr-textarea-rows" title="attr-textarea-rows"><code>rows</code></dfn>
1.156 mike 938: 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
939: 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 940: zero. <p>The <dfn id="attr-textarea-wrap" title="attr-textarea-wrap"><code>wrap</code></dfn>
1.304 mike 941: attribute is an <a href="common-microsyntaxes.html#enumerated-attribute" id="enumerated-attribute-10">enumerated attribute</a> with two keywords
1.9 mike 942: and states: the <dfn id="attr-textarea-wrap-soft" title="attr-textarea-wrap-soft"><code>soft</code></dfn> keyword
1.198 mike 943: 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 944: <dfn id="attr-textarea-wrap-hard" title="attr-textarea-wrap-hard"><code>hard</code></dfn> keyword
1.198 mike 945: 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
946: <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
1.323 mike 947: indicates that the text in the <code><a href="#the-textarea-element" id="textarea-24">textarea</a></code> is not to be
1.198 mike 948: wrapped when it is submitted (though it can still be wrapped in the
949: rendering).<p>The <dfn id="attr-textarea-wrap-hard-state" title="attr-textarea-wrap-hard-state">Hard</dfn> state
1.323 mike 950: indicates that the text in the <code><a href="#the-textarea-element" id="textarea-25">textarea</a></code> is to have
1.198 mike 951: newlines added by the user agent so that the text is wrapped when it
952: is submitted.<p>If the element's <code title="attr-textarea-wrap"><a href="#attr-textarea-wrap" id="wrap-0">wrap</a></code>
953: 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
1.9 mike 954: specified.</p><!-- attr-textarea-wrap-off (attr-textarea-wrap-off-state): not
955: conforming; turns off the rendering of wrapping but otherwise acts
956: like 'soft' --><p>The <dfn id="attr-textarea-maxlength" title="attr-textarea-maxlength"><code>maxlength</code></dfn>
1.156 mike 957: 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
1.323 mike 958: <code><a href="#the-textarea-element" id="textarea-26">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-27">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 959: value length</a>, then the element's children must be such that
1.162 mike 960: 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
961: <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
1.160 mike 962: 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
1.298 mike 963: is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute-19">boolean attribute</a>. When specified, the user will
1.9 mike 964: be required to enter a value before submitting the form.</p><!-- similar text in the <input> section --><p>The <dfn id="attr-textarea-placeholder" title="attr-textarea-placeholder"><code>placeholder</code></dfn>
965: attribute represents a hint (a word or short phrase) intended to aid
966: the user with data entry. A hint could be a sample value or a brief
967: description of the expected format. The attribute, if specified,
968: must have a value that contains no U+000A LINE FEED (LF) or U+000D
1.160 mike 969: 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 970: attribute should not be used as an alternative to a
1.323 mike 971: <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>
972: 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>
973: 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
974: explicitly associate the <code><a href="#the-textarea-element" id="textarea-28">textarea</a></code> element with its
1.156 mike 975: <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>
976: 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-17">disabled</a></code> attribute is used to make
1.9 mike 977: the control non-interactive and to prevent its value from being
1.156 mike 978: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus-6">autofocus</a></code>
1.160 mike 979: attribute controls focus.<dl class="domintro"><dt><var title="">textarea</var> . <code title="attr-textarea-type">type</code></dt>
1.9 mike 980:
981: <dd>
982:
983: <p>Returns the string "<code title="">textarea</code>".</p>
984:
985: </dd>
986:
987: <dt><var title="">textarea</var> . <code title="attr-textarea-value">value</code></dt>
988:
989: <dd>
990:
991: <p>Returns the current value of the element.</p>
992:
993: <p>Can be set, to change the value.</p>
994:
995: </dd>
996:
997: </dl><div class="example">
998:
1.323 mike 999: <p>Here is an example of a <code><a href="#the-textarea-element" id="textarea-29">textarea</a></code> being used for
1.9 mike 1000: unrestricted free-form text input in a form:</p>
1001:
1002: <pre><p>If you have any comments, please let us know: <textarea cols=80 name=comments></textarea></p></pre>
1003:
1.323 mike 1004: <p>To specify that a maximum length for the comments, one can use
1005: the <code title="attr-textarea-maxlength"><a href="#attr-textarea-maxlength" id="maxlength-28">maxlength</a></code>
1006: attribute:</p>
1007:
1008: <pre><p>If you have any short comments, please let us know: <textarea cols=80 name=comments maxlength=200></textarea></p></pre>
1009:
1010: <p>To give a default value, text can be included inside the element:</p>
1011:
1012: <pre><p>If you have any comments, please let us know: <textarea cols=80 name=comments>You rock!</textarea></p></pre>
1013:
1014: <p>To have the browser submit <a href="elements.html#the-directionality" id="the-directionality-9">the directionality</a> of
1015: 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
1016: specified:</p>
1017:
1018: <pre><p>If you have any comments, please let us know (you may use either English or Hebrew for your comments):
1019: <textarea cols=80 name=comments dirname=comments.dir></textarea></p></pre>
1020:
1.202 mike 1021: </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>
1.321 mike 1022: <dd><a href="content-models.html#flow-content" id="flow-content-129">Flow content</a>.</dd>
1023: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-143">Phrasing content</a>.</dd>
1.156 mike 1024: <dd><a href="content-models.html#interactive-content" id="interactive-content-18">Interactive content</a>.</dd>
1.202 mike 1025: <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 1026: <dt>Contexts in which this element can be used:</dt>
1.321 mike 1027: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content-144">phrasing content</a> is expected.</dd>
1.9 mike 1028: <dt>Content model:</dt>
1029: <dd>Empty.</dd>
1030: <dt>Content attributes:</dt>
1.321 mike 1031: <dd><a href="elements.html#global-attributes" id="global-attributes-94">Global attributes</a></dd>
1.156 mike 1032: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus-7">autofocus</a></code></dd>
1033: <dd><code title="attr-keygen-challenge"><a href="#attr-keygen-challenge" id="challenge">challenge</a></code></dd>
1034: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled-18">disabled</a></code></dd>
1.262 mike 1035: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form-55">form</a></code></dd>
1.156 mike 1036: <dd><code title="attr-keygen-keytype"><a href="#attr-keygen-keytype" id="keytype">keytype</a></code></dd>
1037: <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 1038: <dt>DOM interface:</dt>
1039: <dd>
1.321 mike 1040: <pre class="idl">interface <dfn id="htmlkeygenelement">HTMLKeygenElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-105">HTMLElement</a> {
1.162 mike 1041: 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>;
1042: 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>;
1043: 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>;
1044: 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>;
1045: 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>;
1046: 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>;
1047:
1048: 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>;
1049:
1050: 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>;
1051: 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>;
1052: 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>;
1053: 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>();
1054: 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 1055:
1.162 mike 1056: 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 1057: };</pre>
1058: </dd>
1.190 mike 1059: </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 1060: pair generator control. When the control's form is submitted, the
1061: private key is stored in the local keystore, and the public key is
1.160 mike 1062: 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 1063: may be specified. Its value will be packaged with the submitted
1.160 mike 1064: key.<p>The <dfn id="attr-keygen-keytype" title="attr-keygen-keytype"><code>keytype</code></dfn>
1.304 mike 1065: attribute is an <a href="common-microsyntaxes.html#enumerated-attribute" id="enumerated-attribute-11">enumerated attribute</a>. The following
1.160 mike 1066: table lists the keywords and states for the attribute — the
1.9 mike 1067: keywords in the left column map to the states listed in the cell in
1068: the second column on the same row as the keyword. User agents are
1.26 mike 1069: not required to support these values, and must only recognize values
1.160 mike 1070: whose corresponding algorithms they support.<table><thead><tr><th> Keyword <th> State
1071: <tbody><tr><td> <code title="">rsa</code>
1072: <td> <i title="">RSA</i>
1.9 mike 1073: <!-- v2 (see below)
1074: <tr>
1075: <td> <code title="">ec</code>
1076: <td> <i title="">EC</i>
1077: -->
1.160 mike 1078: </table><p>The <i>invalid value default</i> state is the <i title="">unknown</i> state. The <i>missing value default</i> state
1079: 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
1080: user agents are to support — it is possible for a user agent
1.262 mike 1081: 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
1.190 mike 1082: explicitly associate the <code><a href="#the-keygen-element" id="keygen-13">keygen</a></code> element with its
1.156 mike 1083: <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>
1084: 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-19">disabled</a></code> attribute is used to make
1.9 mike 1085: the control non-interactive and to prevent its value from being
1.156 mike 1086: 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 1087: attribute controls focus.<dl class="domintro"><dt><var title="">keygen</var> . <code title="attr-keygen-type">type</code></dt>
1.9 mike 1088:
1089: <dd>
1090:
1091: <p>Returns the string "<code title="">keygen</code>".</p>
1092:
1093: </dd>
1094:
1095: </dl><p class="note">This specification does not specify how the private
1096: key generated is to be used. It is expected that after receiving the
1.162 mike 1097: <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 1098: server will generate a client certificate and offer it back to the
1099: user for download; this certificate, once downloaded and stored in
1100: the key store along with the private key, can then be used to
1.88 mike 1101: authenticate to services that use TLS and certificate
1.9 mike 1102: authentication.</p><!-- how does the UA know which private key is associated with a
1103: certificate it gets back after the server has taken the public key
1104: created by <keygen> and turned it into a client cert? --><div class="example">
1105:
1106: <p>To generate a key pair, add the private key to the user's key
1107: store, and submit the public key to the server, markup such as the
1108: following can be used:</p>
1109:
1.22 mike 1110: <pre><form action="processkey.cgi" method="post" enctype="multipart/form-data">
1.9 mike 1111: <p><keygen name="key"></p>
1112: <p><input type=submit value="Submit key..."></p>
1113: </form></pre>
1114:
1115: <p>The server will then receive a form submission with a packaged
1116: RSA public key as the value of "<code title="">key</code>". This
1117: can then be used for various purposes, such as generating a client
1118: certificate, as mentioned above.</p>
1119:
1.202 mike 1120: </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>
1.321 mike 1121: <dd><a href="content-models.html#flow-content" id="flow-content-130">Flow content</a>.</dd>
1122: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-145">Phrasing content</a>.</dd>
1.202 mike 1123: <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 1124: <dt>Contexts in which this element can be used:</dt>
1.321 mike 1125: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content-146">phrasing content</a> is expected.</dd>
1.9 mike 1126: <dt>Content model:</dt>
1.321 mike 1127: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-147">Phrasing content</a>.</dd>
1.9 mike 1128: <dt>Content attributes:</dt>
1.321 mike 1129: <dd><a href="elements.html#global-attributes" id="global-attributes-95">Global attributes</a></dd>
1.156 mike 1130: <dd><code title="attr-output-for"><a href="#attr-output-for" id="for-2">for</a></code></dd>
1.262 mike 1131: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form-57">form</a></code></dd>
1.156 mike 1132: <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 1133: <dt>DOM interface:</dt>
1134: <dd>
1.321 mike 1135: <pre class="idl">interface <dfn id="htmloutputelement">HTMLOutputElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-106">HTMLElement</a> {
1136: [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-7">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>;
1.162 mike 1137: 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>;
1138: 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>;
1139:
1140: 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>;
1141: 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>;
1142: 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>;
1143:
1144: 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>;
1145: 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>;
1146: 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>;
1147: 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>();
1148: 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 1149:
1.162 mike 1150: 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 1151: };</pre>
1152: </dd>
1.162 mike 1153: </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 1154: calculation.<p>The <dfn id="attr-output-for" title="attr-output-for"><code>for</code></dfn> content
1.9 mike 1155: attribute allows an explicit relationship to be made between the
1156: result of a calculation and the elements that represent the values
1157: that went into the calculation or that otherwise influenced the
1.156 mike 1158: calculation. The <code title="attr-output-for"><a href="#attr-output-for" id="for-3">for</a></code> attribute,
1.306 mike 1159: 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-3">unordered
1.265 mike 1160: set of unique space-separated tokens</a> that are
1161: <a href="infrastructure.html#case-sensitive" id="case-sensitive-5">case-sensitive</a>, each of which must have the value of an
1162: <a href="elements.html#concept-id" id="concept-id-19" title="concept-id">ID</a> of an element in the same
1.262 mike 1163: <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
1.156 mike 1164: explicitly associate the <code><a href="#the-output-element" id="output-12">output</a></code> element with its
1165: <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 1166: 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 1167:
1168: <dd>
1169:
1170: <p>Returns the element's current value.</p>
1171:
1172: <p>Can be set, to change the value.</p>
1173:
1174: </dd>
1175:
1.162 mike 1176: <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 1177:
1178: <dd>
1179:
1180: <p>Returns the element's current default value.</p>
1181:
1182: <p>Can be set, to change the default value.</p>
1183:
1184: </dd>
1185:
1.162 mike 1186: <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 1187:
1188: <dd>
1189:
1190: <p>Returns the string "<code title="">output</code>".</p>
1191:
1192: </dd>
1193:
1194: </dl><div class="example">
1195:
1.156 mike 1196: <p>A simple calculator could use <code><a href="#the-output-element" id="output-13">output</a></code> for its
1.9 mike 1197: display of calculated results:</p>
1198:
1199: <pre><form onsubmit="return false">
1200: <input name=a type=number step=any> +
1201: <input name=b type=number step=any> =
1.32 mike 1202: <output onforminput="value = a.valueAsNumber + b.valueAsNumber"></output>
1.9 mike 1203: </form></pre>
1204:
1.202 mike 1205: </div><h4 id="the-progress-element"><span class="secno">4.10.16 </span>The <dfn><code>progress</code></dfn> element</h4><p class="XXX annotation"><span><a href="http://www.w3.org/html/wg/tracker/issues/96">ISSUE-96</a> (progress) blocks progress to Last Call</span><dl class="element"><dt>Categories</dt>
1.321 mike 1206: <dd><a href="content-models.html#flow-content" id="flow-content-131">Flow content</a>.</dd>
1207: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-148">Phrasing content</a>.</dd>
1.202 mike 1208: <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 1209: <dt>Contexts in which this element can be used:</dt>
1.321 mike 1210: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content-149">phrasing content</a> is expected.</dd>
1.11 mike 1211: <dt>Content model:</dt>
1.321 mike 1212: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-150">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 1213: <dt>Content attributes:</dt>
1.321 mike 1214: <dd><a href="elements.html#global-attributes" id="global-attributes-96">Global attributes</a></dd>
1.255 mike 1215: <dd><code title="attr-progress-value"><a href="#attr-progress-value" id="value-38">value</a></code></dd>
1.156 mike 1216: <dd><code title="attr-progress-max"><a href="#attr-progress-max" id="max-36">max</a></code></dd>
1.262 mike 1217: <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 1218: <dt>DOM interface:</dt>
1219: <dd>
1.321 mike 1220: <pre class="idl">interface <dfn id="htmlprogresselement">HTMLProgressElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-107">HTMLElement</a> {
1.197 mike 1221: 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>;
1222: 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>;
1223: 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>;
1.162 mike 1224: 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>;
1225: 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 1226: };</pre>
1227: </dd>
1.162 mike 1228: </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 1229: completion progress of a task. The progress is either indeterminate,
1230: indicating that progress is being made but that it is not clear how
1.278 mike 1231: much more work remains to be done before the task is complete (e.g.
1232: because the task is waiting for a remote host to respond), or the
1233: progress is a number in the range zero to a maximum, giving the
1.160 mike 1234: fraction of work that has so far been completed.<p>There are two attributes that determine the current task
1.278 mike 1235: completion represented by the element. The <dfn id="attr-progress-value" title="attr-progress-value"><code>value</code></dfn> attribute
1236: 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
1237: how much work the task requires in total. The units are arbitrary
1238: and not specified.<p>Authors are encouraged to also include the current value and the
1.11 mike 1239: maximum value inline as text inside the element, so that the
1.160 mike 1240: progress is made available to users of legacy user agents.<div class="example">
1.11 mike 1241: <p>Here is a snippet of a Web application that shows the progress
1242: of some automated task:</p>
1243: <pre><section>
1244: <h2>Task Progress</h2>
1245: <p>Progress: <progress id="p" max=100><span>0</span>%</progress></p>
1246: <script>
1247: var progressBar = document.getElementById('p');
1248: function updateProgress(newValue) {
1249: progressBar.value = newValue;
1250: progressBar.getElementsByTagName('span')[0].textContent = newValue;
1251: }
1252: </script>
1253: </section></pre>
1254: <p>(The <code>updateProgress()</code> method in this example would
1255: be called by some other code on the page to update the actual
1256: progress bar as the task progressed.)</p>
1.255 mike 1257: </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
1.156 mike 1258: 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
1.255 mike 1259: 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 1260: have a value equal to or greater than zero, and less than or equal
1.156 mike 1261: to the value of the <code title="attr-progress-max"><a href="#attr-progress-max" id="max-38">max</a></code>
1262: 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
1.160 mike 1263: 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 1264: element to use for something that is just a gauge, as opposed to
1265: task progress. For instance, indicating disk space usage using
1.156 mike 1266: <code><a href="#the-progress-element" id="progress-11">progress</a></code> would be inappropriate. Instead, the
1.190 mike 1267: <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 1268:
1269: <dd>
1270:
1271: <p>For a determinate progress bar (one with known current and
1272: maximum values), returns the result of dividing the current value
1273: by the maximum value.</p>
1274:
1.160 mike 1275: <p>For an indeterminate progress bar, returns −1.</p>
1.11 mike 1276:
1.278 mike 1277: </dd>
1278:
1.351 mike 1279: </dl><h4 id="the-meter-element"><span class="secno">4.10.17 </span>The <dfn><code>meter</code></dfn> element</h4><!-- Keep this after <progress> and NOT close to <time> --><dl class="element"><dt>Categories</dt>
1.321 mike 1280: <dd><a href="content-models.html#flow-content" id="flow-content-132">Flow content</a>.</dd>
1281: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-151">Phrasing content</a>.</dd>
1.202 mike 1282: <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 1283: <dt>Contexts in which this element can be used:</dt>
1.321 mike 1284: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content-152">phrasing content</a> is expected.</dd>
1.11 mike 1285: <dt>Content model:</dt>
1.321 mike 1286: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-153">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 1287: <dt>Content attributes:</dt>
1.321 mike 1288: <dd><a href="elements.html#global-attributes" id="global-attributes-97">Global attributes</a></dd>
1.255 mike 1289: <dd><code title="attr-meter-value"><a href="#attr-meter-value" id="value-42">value</a></code></dd>
1.156 mike 1290: <dd><code title="attr-meter-min"><a href="#attr-meter-min" id="min-38">min</a></code></dd>
1291: <dd><code title="attr-meter-max"><a href="#attr-meter-max" id="max-41">max</a></code></dd>
1292: <dd><code title="attr-meter-low"><a href="#attr-meter-low" id="low">low</a></code></dd>
1293: <dd><code title="attr-meter-high"><a href="#attr-meter-high" id="high">high</a></code></dd>
1294: <dd><code title="attr-meter-optimum"><a href="#attr-meter-optimum" id="optimum">optimum</a></code></dd>
1.262 mike 1295: <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 1296: <dt>DOM interface:</dt>
1297: <dd>
1.321 mike 1298: <pre class="idl">interface <dfn id="htmlmeterelement">HTMLMeterElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-108">HTMLElement</a> {
1.197 mike 1299: 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>;
1300: 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>;
1301: 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>;
1302: 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>;
1303: 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>;
1304: 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>;
1.162 mike 1305: 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>;
1306: 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 1307: };</pre>
1308: </dd>
1.190 mike 1309: </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 1310: measurement within a known range, or a fractional value; for example
1311: disk usage, the relevance of a query result, or the fraction of a
1.190 mike 1312: 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 1313: indicate progress (as in a progress bar). For that role, HTML
1.190 mike 1314: 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 1315: represent a scalar value of arbitrary range — for example, it
1.11 mike 1316: would be wrong to use this to report a weight, or height, unless
1.160 mike 1317: there is a known maximum value.<p>There are six attributes that determine the semantics of the
1318: gauge represented by the element.<p>The <dfn id="attr-meter-min" title="attr-meter-min"><code>min</code></dfn> attribute
1.11 mike 1319: specifies the lower bound of the range, and the <dfn id="attr-meter-max" title="attr-meter-max"><code>max</code></dfn> attribute specifies
1320: the upper bound. The <dfn id="attr-meter-value" title="attr-meter-value"><code>value</code></dfn> attribute
1321: specifies the value to have the gauge indicate as the "measured"
1.160 mike 1322: value.<p>The other three attributes can be used to segment the gauge's
1.11 mike 1323: range into "low", "medium", and "high" parts, and to indicate which
1324: part of the gauge is the "optimum" part. The <dfn id="attr-meter-low" title="attr-meter-low"><code>low</code></dfn> attribute specifies
1325: 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
1326: 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
1327: gives the position that is "optimum"; if that is higher than the
1328: "high" value then this indicates that the higher the value, the
1329: better; if it's lower than the "low" mark then it indicates that
1330: lower values are better, and naturally if it is in between then it
1.255 mike 1331: 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
1332: 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,
1.156 mike 1333: must have values that are <a href="common-microsyntaxes.html#valid-floating-point-number" id="valid-floating-point-number-10" title="valid floating point
1.255 mike 1334: 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 1335: attribute is specified, then let <var title="">minimum</var> be that
1.160 mike 1336: 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 1337: attribute is specified, then let <var title="">maximum</var> be that
1.160 mike 1338: 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>
1339: <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>
1340: <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>
1341: <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>
1342: <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 1343: </ul><p class="note">If no minimum or maximum is specified, then the
1.11 mike 1344: range is assumed to be 0..1, and the value thus has to be within
1.160 mike 1345: that range.<p>Authors are encouraged to include a textual representation of the
1.11 mike 1346: gauge's state in the element's contents, for users of user agents
1.190 mike 1347: that do not support the <code><a href="#the-meter-element" id="meter-13">meter</a></code> element.<div class="example">
1.11 mike 1348:
1349: <p>The following examples show three gauges that would all be
1350: three-quarters full:</p>
1351:
1352: <pre>Storage space usage: <meter value=6 max=8>6 blocks used (out of 8 total)</meter>
1353: Voter turnout: <meter value=0.75><img alt="75%" src="graph75.png"></meter>
1354: Tickets sold: <meter min="0" max="100" value="75"></meter></pre>
1355:
1356: <p>The following example is incorrect use of the element, because
1357: it doesn't give a range (and since the default maximum is 1, both
1358: of the gauges would end up looking maxed out):</p>
1359:
1360: <pre class="bad"><p>The grapefruit pie had a radius of <meter value=12>12cm</meter>
1361: and a height of <meter value=2>2cm</meter>.</p> <!-- <strong>BAD!</strong> --></pre>
1362:
1363: <p>Instead, one would either not include the meter element, or use
1364: the meter element with a defined range to give the dimensions in
1365: context compared to other pies:</p>
1366:
1367: <pre><p>The grapefruit pie had a radius of 12cm and a height of
1368: 2cm.</p>
1369: <dl>
1370: <dt>Radius: <dd> <meter min=0 max=20 value=12>12cm</meter>
1371: <dt>Height: <dd> <meter min=0 max=10 value=2>2cm</meter>
1372: </dl></pre>
1373:
1374: </div><p>There is no explicit way to specify units in the
1.190 mike 1375: <code><a href="#the-meter-element" id="meter-14">meter</a></code> element, but the units may be specified in the
1.160 mike 1376: <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 1377:
1378: <p>The example above could be extended to mention the units:</p>
1379:
1380: <pre><dl>
1381: <dt>Radius: <dd> <meter min=0 max=20 value=12 title="centimeters">12cm</meter>
1382: <dt>Height: <dd> <meter min=0 max=10 value=2 title="centimeters">2cm</meter>
1383: </dl></pre>
1384:
1385: </div><div class="example">
1386: <p>The following markup:</p>
1387: <pre><h3>Suggested groups</h3>
1388: <menu type="toolbar">
1389: <a href="?cmd=hsg" onclick="hideSuggestedGroups()">Hide suggested groups</a>
1390: </menu>
1391: <ul>
1392: <li>
1393: <p><a href="/group/comp.infosystems.www.authoring.stylesheets/view">comp.infosystems.www.authoring.stylesheets</a> -
1394: <a href="/group/comp.infosystems.www.authoring.stylesheets/subscribe">join</a></p>
1395: <p>Group description: <strong>Layout/presentation on the WWW.</strong></p>
1396: <p><strong><meter value="0.5">Moderate activity,</meter></strong> Usenet, 618 subscribers</p>
1397: </li>
1398: <li>
1399: <p><a href="/group/netscape.public.mozilla.xpinstall/view">netscape.public.mozilla.xpinstall</a> -
1400: <a href="/group/netscape.public.mozilla.xpinstall/subscribe">join</a></p>
1401: <p>Group description: <strong>Mozilla XPInstall discussion.</strong></p>
1402: <p><strong><meter value="0.25">Low activity,</meter></strong> Usenet, 22 subscribers</p>
1403: </li>
1404: <li>
1405: <p><a href="/group/mozilla.dev.general/view">mozilla.dev.general</a> -
1406: <a href="/group/mozilla.dev.general/subscribe">join</a></p>
1407: <p><strong><meter value="0.25">Low activity,</meter></strong> Usenet, 66 subscribers</p>
1408: </li>
1409: </ul></pre>
1410: <p>Might be rendered as follows:</p>
1.203 mike 1411: <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 1412: </div><p>User agents combine the value of
1.156 mike 1413: 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 1414: attributes to provide context-sensitive help or inline text
1.160 mike 1415: detailing the actual values.<div class="example">
1.11 mike 1416: <p>For example, the following snippet:</p>
1417: <pre><meter min=0 max=60 value=23.2 title=seconds></meter></pre>
1418: <p>...might cause the user agent to display a gauge with a tooltip
1419: saying "Value: 23.2 out of 60." on one line and "seconds" on a
1420: second line.</p>
1.262 mike 1421: </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
1.190 mike 1422: explicitly associate the <code><a href="#the-meter-element" id="meter-15">meter</a></code> element with its
1.160 mike 1423: <a href="association-of-controls-and-forms.html#form-owner" id="form-owner-13">form owner</a>.<div class="example">
1.11 mike 1424:
1425: <p>The following example shows how a gauge could fall back to
1426: localized or pretty-printed text.</p>
1427:
1.160 mike 1428: <pre><p>Disk usage: <meter min=0 value=170261928 max=233257824>170 261 928 bytes used
1429: out of 233 257 824 bytes available</meter></p></pre>
1.11 mike 1430:
1.160 mike 1431: </div>
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