Annotation of html5/spec-author-view/the-button-element.html, revision 1.457
1.421 mike 1: <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html lang="en-US-x-Hixie"><meta content="text/html; charset=utf-8" http-equiv="Content-Type"><title>4.10.8 The button element — HTML5 (Edition for Web Authors)</title><meta content="width=device-width;" name="viewport"><meta content="IE=edge,chrome=1" http-equiv="X-UA-Compatible"><link href="whatwg.css" rel="stylesheet"><style type="text/css">
1.1 mike 2: pre { margin-left: 2em; white-space: pre-wrap; }
3: h2 { margin: 3em 0 1em 0; }
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1.34 mike 27: table thead, table tbody { border-bottom: solid; }
1.1 mike 28: table tbody th:first-child { border-left: solid; }
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1.23 mike 46: dl.domintro { color: green; margin: 2em 0 2em 2em; padding: 0.5em 1em; border: none; background: #DDFFDD; }
1.1 mike 47: hr + dl.domintro, div.impl + dl.domintro { margin-top: 2.5em; margin-bottom: 1.5em; }
48: dl.domintro dt, dl.domintro dt * { color: black; text-decoration: none; }
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61:
62: h2 { page-break-before: always; }
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65:
1.306 mike 66: p > span:not([title=""]):not([class="XXX"]):not([class="impl"]):not([class="note"]),
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1.1 mike 68:
69: div.head { margin: 0 0 1em; padding: 1em 0 0 0; }
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1.1 mike 118:
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160:
1.14 mike 161: body.dfnEnabled dfn { cursor: pointer; }
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179:
1.1 mike 180: #configUI { position: absolute; z-index: 20; top: 10em; right: 1em; width: 11em; font-size: small; }
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184: #configUI input[type=button] { display: block; margin: auto; }
1.121 mike 185:
1.321 mike 186: fieldset { margin: 1em; padding: 0.5em 1em; }
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1.293 mike 188: fieldset > :last-child { margin-bottom: 0; }
1.321 mike 189: fieldset p { margin: 0.5em 0; }
190:
1.419 mike 191: </style><link href="http://www.w3.org/StyleSheets/TR/W3C-ED" rel="stylesheet" type="text/css"><link href="style.css" rel="stylesheet"><script src="link-fixup.js" type="text/javascript"></script><style type="text/css">
1.1 mike 192:
193: .applies thead th > * { display: block; }
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1.136 mike 199: .matrix, .matrix td { border: hidden; text-align: right; }
1.1 mike 200: .matrix { margin-left: 2em; }
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202: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
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1.1 mike 208: #table-example-1 { border: solid thin; border-collapse: collapse; margin-left: 3em; }
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224:
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1.9 mike 234: .apple-table-examples.e1 tbody + tbody tr:last-child td { border-bottom: double 3px; }
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1.11 mike 238: .details-example img { vertical-align: top; }
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1.386 mike 240: #base64-table {
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1.26 mike 258: #named-character-references-table {
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1.257 mike 261: column-width: 30em;
1.26 mike 262: column-gap: 1em;
1.257 mike 263: -moz-column-width: 30em;
1.26 mike 264: -moz-column-gap: 1em;
1.257 mike 265: -webkit-column-width: 30em;
1.26 mike 266: -webkit-column-gap: 1em;
267: }
1.257 mike 268: #named-character-references-table > table > tbody > tr > td:first-child + td,
1.26 mike 269: #named-character-references-table > table > tbody > tr > td:last-child { text-align: center; }
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1.257 mike 271: #named-character-references-table > table > tbody > tr#entity-CounterClockwiseContourIntegral > td:first-child { font-size: 0.5em; }
1.26 mike 272:
1.35 mike 273: .glyph.control { color: red; }
274:
1.38 mike 275: @font-face {
276: font-family: 'Essays1743';
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288: }
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294: }
295:
1.425 mike 296: </style><script type="text/javascript">
1.399 mike 297: function getCookie(name) {
298: var params = location.search.substr(1).split("&");
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300: if (params[index] == name)
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332: </script><link href="common-input-element-attributes.html" rel="prev" title="4.10.7.2 Common input element attributes">
1.160 mike 333: <link href="Overview.html#contents" rel="index" title="Table of contents">
334: <link href="association-of-controls-and-forms.html" rel="next" title="4.10.18 Association of controls and forms">
1.419 mike 335: <body class="split chapter" onload="fixBrokenLink(); init()"><div class="head" id="head">
1.9 mike 336: <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
1.36 mike 337:
1.457 ! mike 338: <h1>HTML5 <span class="edition">Edition for Web Authors</span> <span class="rcsrevision">revision 1.4909</span></h1>
1.9 mike 339: </div><div>
1.320 mike 340: <a href="common-input-element-attributes.html">← 4.10.7.2 Common input element attributes</a> –
1.160 mike 341: <a href="Overview.html#contents">Table of contents</a> –
1.320 mike 342: <a href="association-of-controls-and-forms.html">4.10.18 Association of controls and forms →</a>
1.417 mike 343: <ol class="toc"><li><ol><li><ol><li><a href="the-button-element.html#the-button-element" id="x4.10.8-the-button-element"><span class="secno">4.10.8 </span>The <code>button</code> element</a><li><a href="the-button-element.html#the-select-element" id="x4.10.9-the-select-element"><span class="secno">4.10.9 </span>The <code>select</code> element</a><li><a href="the-button-element.html#the-datalist-element" id="x4.10.10-the-datalist-element"><span class="secno">4.10.10 </span>The <code>datalist</code> element</a><li><a href="the-button-element.html#the-optgroup-element" id="x4.10.11-the-optgroup-element"><span class="secno">4.10.11 </span>The <code>optgroup</code> element</a><li><a href="the-button-element.html#the-option-element" id="x4.10.12-the-option-element"><span class="secno">4.10.12 </span>The <code>option</code> element</a><li><a href="the-button-element.html#the-textarea-element" id="x4.10.13-the-textarea-element"><span class="secno">4.10.13 </span>The <code>textarea</code> element</a><li><a href="the-button-element.html#the-keygen-element" id="x4.10.14-the-keygen-element"><span class="secno">4.10.14 </span>The <code>keygen</code> element</a><li><a href="the-button-element.html#the-output-element" id="x4.10.15-the-output-element"><span class="secno">4.10.15 </span>The <code>output</code> element</a><li><a href="the-button-element.html#the-progress-element" id="x4.10.16-the-progress-element"><span class="secno">4.10.16 </span>The <code>progress</code> element</a><li><a href="the-button-element.html#the-meter-element" id="x4.10.17-the-meter-element"><span class="secno">4.10.17 </span>The <code>meter</code> element</a></ol></ol></ol></div>
1.156 mike 344:
1.455 mike 345: <h4 id="the-button-element"><span class="secno">4.10.8 </span>The <dfn aria-haspopup="true" role="button" tabindex="0"><code>button</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.442 mike 346: <dd><a href="content-models.html#flow-content" id="flow-content_125">Flow content</a>.</dd>
1.415 mike 347: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_138">Phrasing content</a>.</dd>
348: <dd><a href="content-models.html#interactive-content" id="interactive-content_13">Interactive content</a>.</dd>
349: <dd><a href="forms.html#category-listed" id="category-listed_5" title="category-listed">Listed</a>, <a href="forms.html#category-label" id="category-label_3" title="category-label">labelable</a>, and <a href="forms.html#category-submit" id="category-submit_4" title="category-submit">submittable</a> <a href="forms.html#form-associated-element" id="form-associated-element_9">form-associated element</a>.</dd>
1.424 mike 350: <dt>Contexts in which this element can be used:</dt>
1.415 mike 351: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_139">phrasing content</a> is expected.</dd>
1.424 mike 352: <dt>Content model:</dt>
1.415 mike 353: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_140">Phrasing content</a>, but there must be no <a href="content-models.html#interactive-content" id="interactive-content_14">interactive content</a> descendant.</dd>
1.424 mike 354: <dt>Content attributes:</dt>
1.442 mike 355: <dd><a href="elements.html#global-attributes" id="global-attributes_89">Global attributes</a></dd>
1.415 mike 356: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus_1">autofocus</a></code></dd>
357: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled_13">disabled</a></code></dd>
358: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_49">form</a></code></dd>
359: <dd><code title="attr-fs-formaction"><a href="association-of-controls-and-forms.html#attr-fs-formaction" id="formaction_26">formaction</a></code></dd>
360: <dd><code title="attr-fs-formenctype"><a href="association-of-controls-and-forms.html#attr-fs-formenctype" id="formenctype_26">formenctype</a></code></dd>
361: <dd><code title="attr-fs-formmethod"><a href="association-of-controls-and-forms.html#attr-fs-formmethod" id="formmethod_26">formmethod</a></code></dd>
362: <dd><code title="attr-fs-formnovalidate"><a href="association-of-controls-and-forms.html#attr-fs-formnovalidate" id="formnovalidate_27">formnovalidate</a></code></dd>
363: <dd><code title="attr-fs-formtarget"><a href="association-of-controls-and-forms.html#attr-fs-formtarget" id="formtarget_26">formtarget</a></code></dd>
364: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name_37">name</a></code></dd>
365: <dd><code title="attr-button-type"><a href="#attr-button-type" id="type_75">type</a></code></dd>
366: <dd><code title="attr-button-value"><a href="#attr-button-value" id="value_30">value</a></code></dd>
1.424 mike 367: <dt>DOM interface:</dt>
1.9 mike 368: <dd>
1.455 mike 369: <pre class="idl">interface <dfn aria-haspopup="true" id="htmlbuttonelement" role="button" tabindex="0">HTMLButtonElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_97">HTMLElement</a> {
1.162 mike 370: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-autofocus" title='Read about this "autofocus" reference in the full HTML5 spec.'>autofocus</a>;
371: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-disabled" title='Read about this "disabled" reference in the full HTML5 spec.'>disabled</a>;
1.415 mike 372: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement_5">HTMLFormElement</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fae-form" title='Read about this "form" reference in the full HTML5 spec.'>form</a>;
1.162 mike 373: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fs-formaction" title='Read about this "formAction" reference in the full HTML5 spec.'>formAction</a>;
374: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fs-formenctype" title='Read about this "formEnctype" reference in the full HTML5 spec.'>formEnctype</a>;
375: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fs-formmethod" title='Read about this "formMethod" reference in the full HTML5 spec.'>formMethod</a>;
376: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fs-formnovalidate" title='Read about this "formNoValidate" reference in the full HTML5 spec.'>formNoValidate</a>;
377: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fs-formtarget" title='Read about this "formTarget" reference in the full HTML5 spec.'>formTarget</a>;
378: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-name" title='Read about this "name" reference in the full HTML5 spec.'>name</a>;
379: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-button-type" title='Read about this "type" reference in the full HTML5 spec.'>type</a>;
380: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-button-value" title='Read about this "value" reference in the full HTML5 spec.'>value</a>;
381:
382: readonly attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-willvalidate" title='Read about this "willValidate" reference in the full HTML5 spec.'>willValidate</a>;
383: readonly attribute <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#validitystate" title='Read about this "ValidityState" reference in the full HTML5 spec.'>ValidityState</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-validity" title='Read about this "validity" reference in the full HTML5 spec.'>validity</a>;
384: readonly attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-validationmessage" title='Read about this "validationMessage" reference in the full HTML5 spec.'>validationMessage</a>;
385: boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-checkvalidatity" title='Read about this "checkValidity" reference in the full HTML5 spec.'>checkValidity</a>();
386: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-setcustomvalidity" title='Read about this "setCustomValidity" reference in the full HTML5 spec.'>setCustomValidity</a>(in DOMString error);
1.9 mike 387:
1.162 mike 388: readonly attribute <a class="full-spec-link" href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/forms.html#dom-lfe-labels" title='Read about this "labels" reference in the full HTML5 spec.'>labels</a>;
1.9 mike 389: };</pre>
390: </dd>
1.415 mike 391: </dl><p>The <code><a href="#the-button-element" id="button_11">button</a></code> element <a class="full-spec-link" href="http://dev.w3.org/html5/spec/rendering.html#represents" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a
1.455 mike 392: button. <p>The element is a <a href="forms.html#concept-button" id="concept-button_4" title="concept-button">button</a>.<p>The <dfn aria-haspopup="true" id="attr-button-type" role="button" tabindex="0" title="attr-button-type"><code>type</code></dfn>
1.9 mike 393: attribute controls the behavior of the button when it is activated.
1.415 mike 394: It is an <a href="common-microsyntaxes.html#enumerated-attribute" id="enumerated-attribute_9">enumerated attribute</a>. The following table
1.160 mike 395: lists the keywords and states for the attribute — the keywords
1.9 mike 396: in the left column map to the states in the cell in the second
1.160 mike 397: column on the same row as the keyword.<table><thead><tr><th> Keyword
398: <th> State
399: <th> Brief description
1.455 mike 400: <tbody><tr><td><dfn aria-haspopup="true" id="attr-button-type-submit" role="button" tabindex="0" title="attr-button-type-submit"><code>submit</code></dfn>
1.162 mike 401: <td><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#attr-button-type-submit-state" title='Read about this "Submit Button" reference in the full HTML5 spec.'>Submit Button</a>
1.160 mike 402: <td>Submits the form.
1.455 mike 403: <tr><td><dfn aria-haspopup="true" id="attr-button-type-reset" role="button" tabindex="0" title="attr-button-type-reset"><code>reset</code></dfn>
1.162 mike 404: <td><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#attr-button-type-reset-state" title='Read about this "Reset Button" reference in the full HTML5 spec.'>Reset Button</a>
1.160 mike 405: <td>Resets the form.
1.455 mike 406: <tr><td><dfn aria-haspopup="true" id="attr-button-type-button" role="button" tabindex="0" title="attr-button-type-button"><code>button</code></dfn>
1.162 mike 407: <td><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#attr-button-type-button-state" title='Read about this "Button" reference in the full HTML5 spec.'>Button</a>
1.160 mike 408: <td>Does nothing.
1.162 mike 409: </table><p>The <i>missing value default</i> is the <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#attr-button-type-submit-state" title='Read about this "Submit Button" reference in the full HTML5 spec.'>Submit Button</a>
1.415 mike 410: state.<p>If the <code title="attr-button-type"><a href="#attr-button-type" id="type_76">type</a></code> attribute is in
1.162 mike 411: the <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#attr-button-type-submit-state" title='Read about this "Submit Button" reference in the full HTML5 spec.'>Submit Button</a>
1.415 mike 412: state, the element is specifically a <a href="forms.html#concept-submit-button" id="concept-submit-button_2" title="concept-submit-button">submit button</a>.<p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_50">form</a></code> attribute is used to
413: explicitly associate the <code><a href="#the-button-element" id="button_12">button</a></code> element with its
414: <a href="association-of-controls-and-forms.html#form-owner" id="form-owner_8">form owner</a>. The <code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name_38">name</a></code>
415: attribute represents the element's name. The <code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled_14">disabled</a></code> attribute is used to make
1.9 mike 416: the control non-interactive and to prevent its value from being
1.415 mike 417: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus_2">autofocus</a></code>
418: attribute controls focus. The <code title="attr-fs-formaction"><a href="association-of-controls-and-forms.html#attr-fs-formaction" id="formaction_27">formaction</a></code>, <code title="attr-fs-formenctype"><a href="association-of-controls-and-forms.html#attr-fs-formenctype" id="formenctype_27">formenctype</a></code>, <code title="attr-fs-formmethod"><a href="association-of-controls-and-forms.html#attr-fs-formmethod" id="formmethod_27">formmethod</a></code>, <code title="attr-fs-formnovalidate"><a href="association-of-controls-and-forms.html#attr-fs-formnovalidate" id="formnovalidate_28">formnovalidate</a></code>, and <code title="attr-fs-formtarget"><a href="association-of-controls-and-forms.html#attr-fs-formtarget" id="formtarget_27">formtarget</a></code> attributes are
419: <a href="association-of-controls-and-forms.html#attributes-for-form-submission" id="attributes-for-form-submission_3">attributes for form submission</a>.<p class="note">The <code title="attr-fs-formnovalidate"><a href="association-of-controls-and-forms.html#attr-fs-formnovalidate" id="formnovalidate_29">formnovalidate</a></code> attribute can
1.9 mike 420: be used to make submit buttons that do not trigger the constraint
1.415 mike 421: validation.<p>The <code title="attr-fs-formaction"><a href="association-of-controls-and-forms.html#attr-fs-formaction" id="formaction_28">formaction</a></code>, <code title="attr-fs-formenctype"><a href="association-of-controls-and-forms.html#attr-fs-formenctype" id="formenctype_28">formenctype</a></code>, <code title="attr-fs-formmethod"><a href="association-of-controls-and-forms.html#attr-fs-formmethod" id="formmethod_28">formmethod</a></code>, <code title="attr-fs-formnovalidate"><a href="association-of-controls-and-forms.html#attr-fs-formnovalidate" id="formnovalidate_30">formnovalidate</a></code>, and <code title="attr-fs-formtarget"><a href="association-of-controls-and-forms.html#attr-fs-formtarget" id="formtarget_28">formtarget</a></code> must not be specified
422: if the element's <code title="attr-button-type"><a href="#attr-button-type" id="type_77">type</a></code>
1.162 mike 423: attribute is not in the <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#attr-button-type-submit-state" title='Read about this "Submit Button" reference in the full HTML5 spec.'>Submit Button</a>
1.455 mike 424: state.<p>The <dfn aria-haspopup="true" id="attr-button-value" role="button" tabindex="0" title="attr-button-value"><code>value</code></dfn>
1.9 mike 425: attribute gives the element's value for the purposes of form
1.162 mike 426: submission. The element's <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#concept-fe-value" title='Read about this "value" reference in the full HTML5 spec.'>value</a> is the value of the element's
1.415 mike 427: <code title="attr-button-value"><a href="#attr-button-value" id="value_31">value</a></code> attribute, if there is
1.160 mike 428: one, or the empty string otherwise.<p class="note">A button (and its value) is only included in the
1.9 mike 429: form submission if the button itself was used to initiate the form
1.160 mike 430: submission.<div class="example">
1.9 mike 431:
432: <p>The following button is labeled "Show hint" and pops up a dialog
433: box when activated:</p>
434:
435: <pre><button type=button
436: onclick="alert('This 15-20 minute piece was composed by George Gershwin.')">
437: Show hint
438: </button></pre>
439:
1.455 mike 440: </div><h4 id="the-select-element"><span class="secno">4.10.9 </span>The <dfn aria-haspopup="true" role="button" tabindex="0"><code>select</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.442 mike 441: <dd><a href="content-models.html#flow-content" id="flow-content_126">Flow content</a>.</dd>
1.415 mike 442: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_141">Phrasing content</a>.</dd>
443: <dd><a href="content-models.html#interactive-content" id="interactive-content_15">Interactive content</a>.</dd>
444: <dd><a href="forms.html#category-listed" id="category-listed_6" title="category-listed">Listed</a>, <a href="forms.html#category-label" id="category-label_4" title="category-label">labelable</a>, <a href="forms.html#category-submit" id="category-submit_5" title="category-submit">submittable</a>, and <a href="forms.html#category-reset" id="category-reset_2" title="category-reset">resettable</a> <a href="forms.html#form-associated-element" id="form-associated-element_10">form-associated element</a>.</dd>
1.424 mike 445: <dt>Contexts in which this element can be used:</dt>
1.415 mike 446: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_142">phrasing content</a> is expected.</dd>
1.424 mike 447: <dt>Content model:</dt>
1.415 mike 448: <dd>Zero or more <code><a href="#the-option-element" id="option_9">option</a></code> or <code><a href="#the-optgroup-element" id="optgroup_3">optgroup</a></code> elements.</dd>
1.424 mike 449: <dt>Content attributes:</dt>
1.442 mike 450: <dd><a href="elements.html#global-attributes" id="global-attributes_90">Global attributes</a></dd>
1.415 mike 451: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus_3">autofocus</a></code></dd>
452: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled_15">disabled</a></code></dd>
453: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_51">form</a></code></dd>
454: <dd><code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple_34">multiple</a></code></dd>
455: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name_39">name</a></code></dd>
456: <dd><code title="attr-select-required"><a href="#attr-select-required" id="required_28">required</a></code></dd>
457: <dd><code title="attr-select-size"><a href="#attr-select-size" id="size_30">size</a></code></dd>
1.424 mike 458: <dt>DOM interface:</dt>
1.9 mike 459: <dd>
1.455 mike 460: <pre class="idl">interface <dfn aria-haspopup="true" id="htmlselectelement" role="button" tabindex="0">HTMLSelectElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_98">HTMLElement</a> {
1.162 mike 461: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-autofocus" title='Read about this "autofocus" reference in the full HTML5 spec.'>autofocus</a>;
462: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-disabled" title='Read about this "disabled" reference in the full HTML5 spec.'>disabled</a>;
1.415 mike 463: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement_6">HTMLFormElement</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fae-form" title='Read about this "form" reference in the full HTML5 spec.'>form</a>;
1.162 mike 464: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-multiple" title='Read about this "multiple" reference in the full HTML5 spec.'>multiple</a>;
465: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-name" title='Read about this "name" reference in the full HTML5 spec.'>name</a>;
1.165 mike 466: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-required" title='Read about this "required" reference in the full HTML5 spec.'>required</a>;
1.162 mike 467: attribute unsigned long <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-size" title='Read about this "size" reference in the full HTML5 spec.'>size</a>;
1.160 mike 468:
1.162 mike 469: readonly attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-type" title='Read about this "type" reference in the full HTML5 spec.'>type</a>;
1.160 mike 470:
1.415 mike 471: readonly attribute <a href="urls.html#htmloptionscollection" id="htmloptionscollection_2">HTMLOptionsCollection</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-options" title='Read about this "options" reference in the full HTML5 spec.'>options</a>;
1.162 mike 472: attribute unsigned long <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-length" title='Read about this "length" reference in the full HTML5 spec.'>length</a>;
1.291 mike 473: getter any <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-item" title='Read about this "item" reference in the full HTML5 spec.'>item</a>(in unsigned long index);
474: any <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-nameditem" title='Read about this "namedItem" reference in the full HTML5 spec.'>namedItem</a>(in DOMString name);
1.442 mike 475: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-add" title='Read about this "add" reference in the full HTML5 spec.'>add</a>(in <a href="elements.html#htmlelement" id="htmlelement_99">HTMLElement</a> element, in optional <a href="elements.html#htmlelement" id="htmlelement_100">HTMLElement</a> before);
476: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-add" title='Read about this "add" reference in the full HTML5 spec.'>add</a>(in <a href="elements.html#htmlelement" id="htmlelement_101">HTMLElement</a> element, in long before);
1.162 mike 477: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-remove" title='Read about this "remove" reference in the full HTML5 spec.'>remove</a>(in long index);
478:
1.443 mike 479: readonly attribute <a href="urls.html#htmlcollection" id="htmlcollection_32">HTMLCollection</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-selectedoptions" title='Read about this "selectedOptions" reference in the full HTML5 spec.'>selectedOptions</a>;
1.162 mike 480: attribute long <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-selectedindex" title='Read about this "selectedIndex" reference in the full HTML5 spec.'>selectedIndex</a>;
481: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-value" title='Read about this "value" reference in the full HTML5 spec.'>value</a>;
482:
483: readonly attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-willvalidate" title='Read about this "willValidate" reference in the full HTML5 spec.'>willValidate</a>;
484: readonly attribute <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#validitystate" title='Read about this "ValidityState" reference in the full HTML5 spec.'>ValidityState</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-validity" title='Read about this "validity" reference in the full HTML5 spec.'>validity</a>;
485: readonly attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-validationmessage" title='Read about this "validationMessage" reference in the full HTML5 spec.'>validationMessage</a>;
486: boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-checkvalidatity" title='Read about this "checkValidity" reference in the full HTML5 spec.'>checkValidity</a>();
487: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-cva-setcustomvalidity" title='Read about this "setCustomValidity" reference in the full HTML5 spec.'>setCustomValidity</a>(in DOMString error);
1.9 mike 488:
1.162 mike 489: readonly attribute <a class="full-spec-link" href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/forms.html#dom-lfe-labels" title='Read about this "labels" reference in the full HTML5 spec.'>labels</a>;
1.9 mike 490: };</pre>
491: </dd>
1.415 mike 492: </dl><p>The <code><a href="#the-select-element" id="select_18">select</a></code> element represents a control for
1.455 mike 493: selecting amongst a set of options.<p>The <dfn aria-haspopup="true" id="attr-select-multiple" role="button" tabindex="0" title="attr-select-multiple"><code>multiple</code></dfn>
1.415 mike 494: attribute is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute_13">boolean attribute</a>. If the attribute is
495: present, then the <code><a href="#the-select-element" id="select_19">select</a></code> element
1.162 mike 496: <a class="full-spec-link" href="http://dev.w3.org/html5/spec/rendering.html#represents" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a control for selecting zero or more options
1.415 mike 497: from the <a href="#concept-select-option-list" id="concept-select-option-list_1" title="concept-select-option-list">list of
1.9 mike 498: options</a>. If the attribute is absent, then the
1.415 mike 499: <code><a href="#the-select-element" id="select_20">select</a></code> element <a class="full-spec-link" href="http://dev.w3.org/html5/spec/rendering.html#represents" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a control for
1.455 mike 500: selecting a single option from the <a href="#concept-select-option-list" id="concept-select-option-list_2" title="concept-select-option-list">list of options</a>.<p>The <dfn aria-haspopup="true" id="attr-select-size" role="button" tabindex="0" title="attr-select-size"><code>size</code></dfn>
1.415 mike 501: attribute gives the number of options to show to the user. The <code title="attr-input-size"><a href="common-input-element-attributes.html#attr-input-size" id="size_26">size</a></code> attribute, if specified, must
502: have a value that is a <a href="common-microsyntaxes.html#valid-non-negative-integer" id="valid-non-negative-integer_10">valid non-negative integer</a>
503: greater than zero. If the <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple_35">multiple</a></code> attribute is present,
504: then the <code title="attr-input-size"><a href="common-input-element-attributes.html#attr-input-size" id="size_27">size</a></code> attribute's
505: default value is 4. If the <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple_36">multiple</a></code> attribute is absent,
506: then the <code title="attr-input-size"><a href="common-input-element-attributes.html#attr-input-size" id="size_28">size</a></code> attribute's
1.455 mike 507: default value is 1.<p>The <dfn aria-haspopup="true" id="concept-select-option-list" role="button" tabindex="0" title="concept-select-option-list">list of options</dfn>
1.415 mike 508: for a <code><a href="#the-select-element" id="select_21">select</a></code> element consists of all the
509: <code><a href="#the-option-element" id="option_10">option</a></code> element children of the <code><a href="#the-select-element" id="select_22">select</a></code>
510: element, and all the <code><a href="#the-option-element" id="option_11">option</a></code> element children of all the
511: <code><a href="#the-optgroup-element" id="optgroup_4">optgroup</a></code> element children of the <code><a href="#the-select-element" id="select_23">select</a></code>
1.455 mike 512: element, in <a href="infrastructure.html#tree-order" id="tree-order_7">tree order</a>.<p>The <dfn aria-haspopup="true" id="attr-select-required" role="button" tabindex="0" title="attr-select-required"><code>required</code></dfn>
1.415 mike 513: attribute is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute_14">boolean attribute</a>. When specified, the
1.138 mike 514: user will be required to select a value before submitting the
1.415 mike 515: form.<p>If a <code><a href="#the-select-element" id="select_24">select</a></code> element has a <code title="attr-select-required"><a href="#attr-select-required" id="required_29">required</a></code> attribute specified,
516: does not have a <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple_37">multiple</a></code>
1.429 mike 517: attribute specified, and has a <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#concept-select-size" title='Read about this "display size" reference in the full HTML5 spec.'>display size</a> of 1;
518: and if the <a href="#concept-option-value" id="concept-option-value_0" title="concept-option-value">value</a> of the
519: first <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>
520: element's <a href="#concept-select-option-list" id="concept-select-option-list_3" title="concept-select-option-list">list of
521: options</a> (if any) is the empty string, and that
522: <code><a href="#the-option-element" id="option_13">option</a></code> element's parent node is the <code><a href="#the-select-element" id="select_26">select</a></code>
1.415 mike 523: element (and not an <code><a href="#the-optgroup-element" id="optgroup_5">optgroup</a></code> element), then that
1.429 mike 524: <code><a href="#the-option-element" id="option_14">option</a></code> is the <code><a href="#the-select-element" id="select_27">select</a></code> element's
1.455 mike 525: <dfn aria-haspopup="true" id="placeholder-label-option" role="button" tabindex="0">placeholder label option</dfn>.<p>If a <code><a href="#the-select-element" id="select_28">select</a></code> element has a <code title="attr-select-required"><a href="#attr-select-required" id="required_30">required</a></code> attribute specified,
1.429 mike 526: does not have a <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple_38">multiple</a></code>
527: 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,
528: then the <code><a href="#the-select-element" id="select_29">select</a></code> element must have a <a href="#placeholder-label-option" id="placeholder-label-option_0">placeholder
529: label option</a>.<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
530: explicitly associate the <code><a href="#the-select-element" id="select_30">select</a></code> element with its
1.415 mike 531: <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>
532: attribute represents the element's name. The <code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled_16">disabled</a></code> attribute is used to make
1.9 mike 533: the control non-interactive and to prevent its value from being
1.415 mike 534: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus_4">autofocus</a></code>
1.424 mike 535: 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 536:
537: <dd>
538:
539: <p>Returns "<code title="">select-multiple</code>" if the element
1.429 mike 540: has a <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple_39">multiple</a></code>
1.9 mike 541: attribute, and "<code title="">select-one</code>"
542: otherwise.</p>
543:
544: </dd>
545:
1.424 mike 546: <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 547:
548: <dd>
549:
1.415 mike 550: <p>Returns an <code><a href="urls.html#htmloptionscollection" id="htmloptionscollection_3">HTMLOptionsCollection</a></code> of the <a href="#concept-select-option-list" id="concept-select-option-list_4" title="concept-select-option-list">list of options</a>.</p>
1.9 mike 551:
552: </dd>
553:
1.424 mike 554: <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 555: <dd>
1.415 mike 556: <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>
1.429 mike 557: <p>When set to a smaller number, truncates the number of <code><a href="#the-option-element" id="option_15">option</a></code> elements in the <code><a href="#the-select-element" id="select_31">select</a></code>.</p>
558: <p>When set to a greater number, adds new blank <code><a href="#the-option-element" id="option_16">option</a></code> elements to the <code><a href="#the-select-element" id="select_32">select</a></code>.</p>
1.9 mike 559: </dd>
560:
1.424 mike 561: <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>
562: <dt><var title="">select</var>[<var title="">index</var>]</dt>
563: <dd>
1.415 mike 564: <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 565: <p>Returns null if <var title="">index</var> is out of range.</p>
566: </dd>
567:
1.424 mike 568: <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 569: <dd>
1.415 mike 570: <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 571: <p>If there are multiple matching items, then a <code><a class="full-spec-link" href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a></code> object containing all those elements is returned.</p>
1.415 mike 572: <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 573: </dd>
574:
1.424 mike 575: <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 576: <dd>
577: <p>Inserts <var title="">element</var> before the node given by <var title="">before</var>.</p>
578: <p>The <var title="">before</var> argument can be a number, in
579: which case <var title="">element</var> is inserted before the item
1.415 mike 580: 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 581: which case <var title="">element</var> is inserted before that
582: element.</p>
583: <p>If <var title="">before</var> is omitted, null, or a number out
584: of range, then <var title="">element</var> will be added at the
585: end of the list.</p>
1.415 mike 586: <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 587: exception if <var title="">element</var> is an ancestor of the
1.429 mike 588: element into which it is to be inserted. If <var title="">element</var> is not an <code><a href="#the-option-element" id="option_17">option</a></code> or
1.415 mike 589: <code><a href="#the-optgroup-element" id="optgroup_6">optgroup</a></code> element, then the method does nothing.</p>
1.9 mike 590: </dd>
591:
1.424 mike 592: <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 593:
594: <dd>
595:
1.443 mike 596: <p>Returns an <code><a href="urls.html#htmlcollection" id="htmlcollection_33">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 597: selected.</p>
598:
599: </dd>
600:
1.424 mike 601: <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 602:
603: <dd>
604:
605: <p>Returns the index of the first selected item, if any, or
1.160 mike 606: −1 if there is no selected item.</p>
1.9 mike 607:
608: <p>Can be set, to change the selection.</p>
609:
610: </dd>
611:
1.424 mike 612: <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 613:
614: <dd>
615:
1.162 mike 616: <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 617: first selected item, if any, or the empty string if there is no
618: selected item.</p>
619:
620: <p>Can be set, to change the selection.</p>
621:
622: </dd>
623:
624: </dl><div class="example">
625:
1.429 mike 626: <p>The following example shows how a <code><a href="#the-select-element" id="select_33">select</a></code> element
1.9 mike 627: can be used to offer the user with a set of options from which the
628: user can select a single option. The default option is
629: preselected.</p>
630:
631: <pre><p>
632: <label for="unittype">Select unit type:</label>
633: <select id="unittype" name="unittype">
634: <option value="1"> Miner </option>
635: <option value="2"> Puffer </option>
636: <option value="3" selected> Snipey </option>
637: <option value="4"> Max </option>
638: <option value="5"> Firebot </option>
639: </select>
640: </p></pre>
641:
642: </div><div class="example">
643:
644: <p>Here, the user is offered a set of options from which he can
645: select any number. By default, all five options are selected.</p>
646:
647: <pre><p>
648: <label for="allowedunits">Select unit types to enable on this map:</label>
649: <select id="allowedunits" name="allowedunits" multiple>
650: <option value="1" selected> Miner </option>
651: <option value="2" selected> Puffer </option>
652: <option value="3" selected> Snipey </option>
653: <option value="4" selected> Max </option>
654: <option value="5" selected> Firebot </option>
655: </select>
656: </p></pre>
657:
1.455 mike 658: </div><h4 id="the-datalist-element"><span class="secno">4.10.10 </span>The <dfn aria-haspopup="true" role="button" tabindex="0"><code>datalist</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.442 mike 659: <dd><a href="content-models.html#flow-content" id="flow-content_127">Flow content</a>.</dd>
1.415 mike 660: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_143">Phrasing content</a>.</dd>
1.424 mike 661: <dt>Contexts in which this element can be used:</dt>
1.415 mike 662: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_144">phrasing content</a> is expected.</dd>
1.424 mike 663: <dt>Content model:</dt>
1.415 mike 664: <dd>Either: <a href="content-models.html#phrasing-content" id="phrasing-content_145">phrasing content</a>.</dd>
1.429 mike 665: <dd>Or: Zero or more <code><a href="#the-option-element" id="option_18">option</a></code> elements.</dd>
1.424 mike 666: <dt>Content attributes:</dt>
1.442 mike 667: <dd><a href="elements.html#global-attributes" id="global-attributes_91">Global attributes</a></dd>
1.424 mike 668: <dt>DOM interface:</dt>
1.9 mike 669: <dd>
1.455 mike 670: <pre class="idl">interface <dfn aria-haspopup="true" id="htmldatalistelement" role="button" tabindex="0">HTMLDataListElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_102">HTMLElement</a> {
1.443 mike 671: 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-datalist-options" title='Read about this "options" reference in the full HTML5 spec.'>options</a>;
1.9 mike 672: };</pre>
673: </dd>
1.415 mike 674: </dl><p>The <code><a href="#the-datalist-element" id="datalist_13">datalist</a></code> element represents a set of
1.429 mike 675: <code><a href="#the-option-element" id="option_19">option</a></code> elements that represent predefined options for
1.9 mike 676: other controls. The contents of the element represents fallback
1.429 mike 677: content for legacy user agents, intermixed with <code><a href="#the-option-element" id="option_20">option</a></code>
1.9 mike 678: elements that represent the predefined options. In the rendering,
1.415 mike 679: 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>
680: nothing.<p>The <code><a href="#the-datalist-element" id="datalist_15">datalist</a></code> element is hooked up to an
681: <code><a href="the-input-element.html#the-input-element" id="input_121">input</a></code> element using the <code title="attr-input-list"><a href="common-input-element-attributes.html#attr-input-list" id="list_29">list</a></code> attribute on the
1.429 mike 682: <code><a href="the-input-element.html#the-input-element" id="input_122">input</a></code> element.<p>Each <code><a href="#the-option-element" id="option_21">option</a></code> element that is a descendant of the
683: <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_0" 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
1.415 mike 684: 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 685:
1.424 mike 686: <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 687:
688: <dd>
1.443 mike 689: <p>Returns an <code><a href="urls.html#htmlcollection" id="htmlcollection_35">HTMLCollection</a></code> of the <code>options</code> elements of the table.</p>
1.9 mike 690: </dd>
691:
1.455 mike 692: </dl><h4 id="the-optgroup-element"><span class="secno">4.10.11 </span>The <dfn aria-haspopup="true" role="button" tabindex="0"><code>optgroup</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.9 mike 693: <dd>None.</dd>
1.424 mike 694: <dt>Contexts in which this element can be used:</dt>
1.429 mike 695: <dd>As a child of a <code><a href="#the-select-element" id="select_34">select</a></code> element.</dd>
1.424 mike 696: <dt>Content model:</dt>
1.429 mike 697: <dd>Zero or more <code><a href="#the-option-element" id="option_22">option</a></code> elements.</dd>
1.424 mike 698: <dt>Content attributes:</dt>
1.442 mike 699: <dd><a href="elements.html#global-attributes" id="global-attributes_92">Global attributes</a></dd>
1.415 mike 700: <dd><code title="attr-optgroup-disabled"><a href="#attr-optgroup-disabled" id="disabled_3">disabled</a></code></dd>
701: <dd><code title="attr-optgroup-label"><a href="#attr-optgroup-label" id="label_31">label</a></code></dd>
1.424 mike 702: <dt>DOM interface:</dt>
1.9 mike 703: <dd>
1.455 mike 704: <pre class="idl">interface <dfn aria-haspopup="true" id="htmloptgroupelement" role="button" tabindex="0">HTMLOptGroupElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_103">HTMLElement</a> {
1.162 mike 705: 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>;
706: 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 707: };</pre>
708: </dd>
1.415 mike 709: </dl><p>The <code><a href="#the-optgroup-element" id="optgroup_7">optgroup</a></code> element <a class="full-spec-link" href="http://dev.w3.org/html5/spec/rendering.html#represents" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a group of
1.429 mike 710: <code><a href="#the-option-element" id="option_23">option</a></code> elements with a common label.<p>The element's group of <code><a href="#the-option-element" id="option_24">option</a></code> elements consists of
711: the <code><a href="#the-option-element" id="option_25">option</a></code> elements that are children of the
1.455 mike 712: <code><a href="#the-optgroup-element" id="optgroup_8">optgroup</a></code> element.<p>The <dfn aria-haspopup="true" id="attr-optgroup-disabled" role="button" tabindex="0" title="attr-optgroup-disabled"><code>disabled</code></dfn> attribute
1.429 mike 713: 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_1" title="concept-option-disabled">disable</a> a group of
1.455 mike 714: <code><a href="#the-option-element" id="option_26">option</a></code> elements together.<p>The <dfn aria-haspopup="true" id="attr-optgroup-label" role="button" tabindex="0" title="attr-optgroup-label"><code>label</code></dfn>
1.9 mike 715: attribute must be specified. Its value gives the name of the group,
1.160 mike 716: for the purposes of the user interface. <div class="example">
1.9 mike 717:
718: <p>The following snippet shows how a set of lessons from three
1.429 mike 719: courses could be offered in a <code><a href="#the-select-element" id="select_35">select</a></code> drop-down
1.9 mike 720: widget:</p>
721:
722: <pre><form action="courseselector.dll" method="get">
723: <p>Which course would you like to watch today?
724: <p><label>Course:
725: <select name="c">
726: <optgroup label="8.01 Physics I: Classical Mechanics">
727: <option value="8.01.1">Lecture 01: Powers of Ten
728: <option value="8.01.2">Lecture 02: 1D Kinematics
729: <option value="8.01.3">Lecture 03: Vectors
730: <optgroup label="8.02 Electricity and Magnestism">
731: <option value="8.02.1">Lecture 01: What holds our world together?
732: <option value="8.02.2">Lecture 02: Electric Field
733: <option value="8.02.3">Lecture 03: Electric Flux
734: <optgroup label="8.03 Physics III: Vibrations and Waves">
735: <option value="8.03.1">Lecture 01: Periodic Phenomenon
736: <option value="8.03.2">Lecture 02: Beats
737: <option value="8.03.3">Lecture 03: Forced Oscillations with Damping
738: </select>
739: </label>
1.320 mike 740: <p><input type=submit value="▶ Play">
1.9 mike 741: </form></pre>
742:
1.455 mike 743: </div><h4 id="the-option-element"><span class="secno">4.10.12 </span>The <dfn aria-haspopup="true" role="button" tabindex="0"><code>option</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.9 mike 744: <dd>None.</dd>
1.424 mike 745: <dt>Contexts in which this element can be used:</dt>
1.429 mike 746: <dd>As a child of a <code><a href="#the-select-element" id="select_36">select</a></code> element.</dd>
1.415 mike 747: <dd>As a child of a <code><a href="#the-datalist-element" id="datalist_17">datalist</a></code> element.</dd>
748: <dd>As a child of an <code><a href="#the-optgroup-element" id="optgroup_9">optgroup</a></code> element.</dd>
1.424 mike 749: <dt>Content model:</dt>
1.415 mike 750: <dd><a href="content-models.html#text-content" id="text-content_5" title="text content">Text</a>.</dd>
1.424 mike 751: <dt>Content attributes:</dt>
1.442 mike 752: <dd><a href="elements.html#global-attributes" id="global-attributes_93">Global attributes</a></dd>
1.415 mike 753: <dd><code title="attr-option-disabled"><a href="#attr-option-disabled" id="disabled_6">disabled</a></code></dd>
754: <dd><code title="attr-option-label"><a href="#attr-option-label" id="label_33">label</a></code></dd>
755: <dd><code title="attr-option-selected"><a href="#attr-option-selected" id="selected_0">selected</a></code></dd>
756: <dd><code title="attr-option-value"><a href="#attr-option-value" id="value_34">value</a></code></dd>
1.424 mike 757: <dt>DOM interface:</dt>
1.9 mike 758: <dd>
1.162 mike 759: <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>(),
760: 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),
761: 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),
762: 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),
763: 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)]
1.455 mike 764: interface <dfn aria-haspopup="true" id="htmloptionelement" role="button" tabindex="0">HTMLOptionElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_104">HTMLElement</a> {
1.162 mike 765: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-disabled" title='Read about this "disabled" reference in the full HTML5 spec.'>disabled</a>;
1.415 mike 766: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement_7">HTMLFormElement</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-form" title='Read about this "form" reference in the full HTML5 spec.'>form</a>;
1.162 mike 767: 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>;
768: 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>;
769: 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>;
770: 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 771:
1.162 mike 772: 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>;
773: 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 774: };</pre>
775: </dd>
1.429 mike 776: </dl><p>The <code><a href="#the-option-element" id="option_27">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
777: in a <code><a href="#the-select-element" id="select_37">select</a></code> element or as part of a list of suggestions
1.415 mike 778: 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
1.429 mike 779: <code><a href="#the-select-element" id="select_38">select</a></code> element, an <code><a href="#the-option-element" id="option_28">option</a></code> element can be a
780: <code><a href="#the-select-element" id="select_39">select</a></code> element's <a href="#placeholder-label-option" id="placeholder-label-option_1">placeholder label option</a>.
781: A <a href="#placeholder-label-option" id="placeholder-label-option_2">placeholder label option</a> does not represent an actual
782: option, but instead represents a label for the <code><a href="#the-select-element" id="select_40">select</a></code>
1.455 mike 783: control.<p>The <dfn aria-haspopup="true" id="attr-option-disabled" role="button" tabindex="0" title="attr-option-disabled"><code>disabled</code></dfn>
1.415 mike 784: attribute is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute_16">boolean attribute</a>. An
1.455 mike 785: <code><a href="#the-option-element" id="option_29">option</a></code> element is <dfn aria-haspopup="true" id="concept-option-disabled" role="button" tabindex="0" 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
1.415 mike 786: 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
1.455 mike 787: present.<p>The <dfn aria-haspopup="true" id="attr-option-label" role="button" tabindex="0" title="attr-option-label"><code>label</code></dfn>
788: attribute provides a label for element. The <dfn aria-haspopup="true" id="concept-option-label" role="button" tabindex="0" title="concept-option-label">label</dfn> of an <code><a href="#the-option-element" id="option_30">option</a></code>
1.415 mike 789: 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,
1.455 mike 790: 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 aria-haspopup="true" id="attr-option-value" role="button" tabindex="0" title="attr-option-value"><code>value</code></dfn>
791: attribute provides a value for element. The <dfn aria-haspopup="true" id="concept-option-value" role="button" tabindex="0" title="concept-option-value">value</dfn> of an <code><a href="#the-option-element" id="option_31">option</a></code>
1.415 mike 792: 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,
1.455 mike 793: 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 aria-haspopup="true" id="attr-option-selected" role="button" tabindex="0" title="attr-option-selected"><code>selected</code></dfn>
1.415 mike 794: attribute is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute_17">boolean attribute</a>. It represents the
1.298 mike 795: 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
1.429 mike 796: element.<p>A <code><a href="#the-select-element" id="select_41">select</a></code> element whose <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple_40">multiple</a></code> attribute is not
797: specified must not have more than one descendant <code><a href="#the-option-element" id="option_32">option</a></code>
1.415 mike 798: element with its <code title="attr-option-selected"><a href="#attr-option-selected" id="selected_1">selected</a></code>
1.424 mike 799: 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 800:
801: <dd>
802:
803: <p>Returns true if the element is selected, and false otherwise.</p>
804:
1.202 mike 805: <p>Can be set, to override the current state of the element.</p>
806:
1.9 mike 807: </dd>
808:
1.424 mike 809: <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 810:
811: <dd>
812:
1.429 mike 813: <p>Returns the index of the element in its <code><a href="#the-select-element" id="select_42">select</a></code>
1.162 mike 814: 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 815: list.</p>
816:
817: </dd>
818:
1.424 mike 819: <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 820:
821: <dd>
822:
1.415 mike 823: <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 824: null otherwise.</p>
825:
826: </dd>
827:
1.424 mike 828: <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 829:
830: <dd>
831:
1.206 mike 832: <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 833:
834: </dd>
835:
1.424 mike 836: <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 837:
838: <dd>
839:
1.429 mike 840: <p>Returns a new <code><a href="#the-option-element" id="option_33">option</a></code> element.</p>
1.9 mike 841:
842: <p>The <var title="">text</var> argument sets the contents of the element.</p>
1.415 mike 843: <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>
844: <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 845: <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>
846:
847: </dd>
848:
1.455 mike 849: </dl><h4 id="the-textarea-element"><span class="secno">4.10.13 </span>The <dfn aria-haspopup="true" role="button" tabindex="0"><code>textarea</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.442 mike 850: <dd><a href="content-models.html#flow-content" id="flow-content_128">Flow content</a>.</dd>
1.415 mike 851: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_146">Phrasing content</a>.</dd>
852: <dd><a href="content-models.html#interactive-content" id="interactive-content_16">Interactive content</a>.</dd>
853: <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>
1.424 mike 854: <dt>Contexts in which this element can be used:</dt>
1.415 mike 855: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_147">phrasing content</a> is expected.</dd>
1.424 mike 856: <dt>Content model:</dt>
1.415 mike 857: <dd><a href="content-models.html#text-content" id="text-content_6" title="text content">Text</a>.</dd>
1.424 mike 858: <dt>Content attributes:</dt>
1.442 mike 859: <dd><a href="elements.html#global-attributes" id="global-attributes_94">Global attributes</a></dd>
1.415 mike 860: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus_5">autofocus</a></code></dd>
1.413 mike 861: <dd><code title="attr-textarea-cols"><a href="#attr-textarea-cols" id="cols">cols</a></code></dd>
1.415 mike 862: <dd><code title="attr-textarea-dirname"><a href="#attr-textarea-dirname" id="dirname_26">dirname</a></code></dd>
863: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled_17">disabled</a></code></dd>
864: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_53">form</a></code></dd>
865: <dd><code title="attr-textarea-maxlength"><a href="#attr-textarea-maxlength" id="maxlength_27">maxlength</a></code></dd>
866: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name_41">name</a></code></dd>
867: <dd><code title="attr-textarea-placeholder"><a href="#attr-textarea-placeholder" id="placeholder_28">placeholder</a></code></dd>
868: <dd><code title="attr-textarea-readonly"><a href="#attr-textarea-readonly" id="readonly_41">readonly</a></code></dd>
1.429 mike 869: <dd><code title="attr-textarea-required"><a href="#attr-textarea-required" id="required_33">required</a></code></dd>
1.413 mike 870: <dd><code title="attr-textarea-rows"><a href="#attr-textarea-rows" id="rows">rows</a></code></dd>
871: <dd><code title="attr-textarea-wrap"><a href="#attr-textarea-wrap" id="wrap">wrap</a></code></dd>
1.424 mike 872: <dt>DOM interface:</dt>
1.9 mike 873: <dd>
1.455 mike 874: <pre class="idl">interface <dfn aria-haspopup="true" id="htmltextareaelement" role="button" tabindex="0">HTMLTextAreaElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_105">HTMLElement</a> {
1.162 mike 875: 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>;
876: attribute unsigned long <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-textarea-cols" title='Read about this "cols" reference in the full HTML5 spec.'>cols</a>;
1.412 mike 877: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-textarea-dirname" title='Read about this "dirName" reference in the full HTML5 spec.'>dirName</a>;
1.162 mike 878: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-disabled" title='Read about this "disabled" reference in the full HTML5 spec.'>disabled</a>;
1.415 mike 879: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement_8">HTMLFormElement</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fae-form" title='Read about this "form" reference in the full HTML5 spec.'>form</a>;
1.162 mike 880: 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>;
881: 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>;
882: 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>;
883: 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>;
884: 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>;
885: 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>;
886: 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>;
887:
888: 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>;
889: 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>;
890: 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>;
891: 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>;
892:
893: 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>;
894: 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>;
895: 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>;
896: 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>();
897: 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);
898:
899: 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>;
900:
1.412 mike 901: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-textarea-input-select" title='Read about this "select" reference in the full HTML5 spec.'>select</a>();
902: attribute unsigned long <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-textarea-input-selectionstart" title='Read about this "selectionStart" reference in the full HTML5 spec.'>selectionStart</a>;
903: attribute unsigned long <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-textarea-input-selectionend" title='Read about this "selectionEnd" reference in the full HTML5 spec.'>selectionEnd</a>;
1.439 mike 904: attribute DOMString <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-textarea-input-selectiondirection" title='Read about this "selectionDirection" reference in the full HTML5 spec.'>selectionDirection</a>;
905: void <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-textarea-input-setselectionrange" title='Read about this "setSelectionRange" reference in the full HTML5 spec.'>setSelectionRange</a>(in unsigned long start, in unsigned long end, in optional DOMString direction);
1.9 mike 906: };</pre>
907: </dd>
1.415 mike 908: </dl><p>The <code><a href="#the-textarea-element" id="textarea_24">textarea</a></code> element <a class="full-spec-link" href="http://dev.w3.org/html5/spec/rendering.html#represents" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a
1.9 mike 909: multiline plain text edit control. The contents of the control represent the
1.455 mike 910: control's default value.<p>The <dfn aria-haspopup="true" id="attr-textarea-readonly" role="button" tabindex="0" title="attr-textarea-readonly"><code>readonly</code></dfn> attribute
1.415 mike 911: is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute_18">boolean attribute</a> used to control whether the text
1.455 mike 912: can be edited by the user or not.<p>The <dfn aria-haspopup="true" id="attr-textarea-cols" role="button" tabindex="0" title="attr-textarea-cols"><code>cols</code></dfn>
1.9 mike 913: attribute specifies the expected maximum number of characters per
1.415 mike 914: line. If the <code title="attr-textarea-cols"><a href="#attr-textarea-cols" id="cols_0">cols</a></code> attribute
915: 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
1.455 mike 916: integer</a> greater than zero. <p>The <dfn aria-haspopup="true" id="attr-textarea-rows" role="button" tabindex="0" title="attr-textarea-rows"><code>rows</code></dfn>
1.415 mike 917: 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
918: 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
1.455 mike 919: zero. <p>The <dfn aria-haspopup="true" id="attr-textarea-wrap" role="button" tabindex="0" title="attr-textarea-wrap"><code>wrap</code></dfn>
1.415 mike 920: attribute is an <a href="common-microsyntaxes.html#enumerated-attribute" id="enumerated-attribute_10">enumerated attribute</a> with two keywords
1.455 mike 921: and states: the <dfn aria-haspopup="true" id="attr-textarea-wrap-soft" role="button" tabindex="0" title="attr-textarea-wrap-soft"><code>soft</code></dfn> keyword
1.415 mike 922: 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
1.455 mike 923: <dfn aria-haspopup="true" id="attr-textarea-wrap-hard" role="button" tabindex="0" title="attr-textarea-wrap-hard"><code>hard</code></dfn> keyword
1.415 mike 924: 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
1.455 mike 925: <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 aria-haspopup="true" id="attr-textarea-wrap-soft-state" role="button" tabindex="0" title="attr-textarea-wrap-soft-state">Soft</dfn> state
1.415 mike 926: indicates that the text in the <code><a href="#the-textarea-element" id="textarea_25">textarea</a></code> is not to be
1.198 mike 927: wrapped when it is submitted (though it can still be wrapped in the
1.455 mike 928: rendering).<p>The <dfn aria-haspopup="true" id="attr-textarea-wrap-hard-state" role="button" tabindex="0" title="attr-textarea-wrap-hard-state">Hard</dfn> state
1.415 mike 929: indicates that the text in the <code><a href="#the-textarea-element" id="textarea_26">textarea</a></code> is to have
1.198 mike 930: newlines added by the user agent so that the text is wrapped when it
1.415 mike 931: is submitted.<p>If the element's <code title="attr-textarea-wrap"><a href="#attr-textarea-wrap" id="wrap_0">wrap</a></code>
932: 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
1.455 mike 933: specified.<p>The <dfn aria-haspopup="true" id="attr-textarea-maxlength" role="button" tabindex="0" title="attr-textarea-maxlength"><code>maxlength</code></dfn>
1.415 mike 934: 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
935: <code><a href="#the-textarea-element" id="textarea_27">textarea</a></code> element's <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#concept-textarea-dirty" title='Read about this "dirty value flag" reference in the full HTML5 spec.'>dirty value flag</a>.<p>If the <code><a href="#the-textarea-element" id="textarea_28">textarea</a></code> element has a <a href="association-of-controls-and-forms.html#maximum-allowed-value-length" id="maximum-allowed-value-length_2">maximum allowed
1.9 mike 936: value length</a>, then the element's children must be such that
1.162 mike 937: 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
938: <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
1.455 mike 939: 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 aria-haspopup="true" id="attr-textarea-required" role="button" tabindex="0" title="attr-textarea-required"><code>required</code></dfn> attribute
1.415 mike 940: is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute_19">boolean attribute</a>. When specified, the user will
1.455 mike 941: be required to enter a value before submitting the form.<p>The <dfn aria-haspopup="true" id="attr-textarea-placeholder" role="button" tabindex="0" title="attr-textarea-placeholder"><code>placeholder</code></dfn>
1.9 mike 942: attribute represents a hint (a word or short phrase) intended to aid
943: the user with data entry. A hint could be a sample value or a brief
944: description of the expected format. The attribute, if specified,
945: must have a value that contains no U+000A LINE FEED (LF) or U+000D
1.415 mike 946: 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 947: attribute should not be used as an alternative to a
1.455 mike 948: <code><a href="forms.html#the-label-element" id="label_20">label</a></code>.<p>The <dfn aria-haspopup="true" id="attr-textarea-dirname" role="button" tabindex="0" title="attr-textarea-dirname"><code>dirname</code></dfn>
1.415 mike 949: 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>
950: 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
951: explicitly associate the <code><a href="#the-textarea-element" id="textarea_29">textarea</a></code> element with its
952: <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>
953: attribute represents the element's name. The <code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled_18">disabled</a></code> attribute is used to make
1.9 mike 954: the control non-interactive and to prevent its value from being
1.415 mike 955: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus_6">autofocus</a></code>
1.424 mike 956: attribute controls focus.<dl class="domintro"><dt><var title="">textarea</var> . <code title="attr-textarea-type">type</code></dt>
1.9 mike 957:
958: <dd>
959:
960: <p>Returns the string "<code title="">textarea</code>".</p>
961:
962: </dd>
963:
1.424 mike 964: <dt><var title="">textarea</var> . <code title="attr-textarea-value">value</code></dt>
1.9 mike 965:
966: <dd>
967:
968: <p>Returns the current value of the element.</p>
969:
970: <p>Can be set, to change the value.</p>
971:
972: </dd>
973:
974: </dl><div class="example">
975:
1.415 mike 976: <p>Here is an example of a <code><a href="#the-textarea-element" id="textarea_30">textarea</a></code> being used for
1.9 mike 977: unrestricted free-form text input in a form:</p>
978:
979: <pre><p>If you have any comments, please let us know: <textarea cols=80 name=comments></textarea></p></pre>
980:
1.396 mike 981: <p>To specify a maximum length for the comments, one can use
1.415 mike 982: the <code title="attr-textarea-maxlength"><a href="#attr-textarea-maxlength" id="maxlength_28">maxlength</a></code>
1.323 mike 983: attribute:</p>
984:
985: <pre><p>If you have any short comments, please let us know: <textarea cols=80 name=comments maxlength=200></textarea></p></pre>
986:
987: <p>To give a default value, text can be included inside the element:</p>
988:
989: <pre><p>If you have any comments, please let us know: <textarea cols=80 name=comments>You rock!</textarea></p></pre>
990:
1.415 mike 991: <p>To have the browser submit <a href="elements.html#the-directionality" id="the-directionality_9">the directionality</a> of
992: the element along with the value, the <code title="attr-textarea-dirname"><a href="#attr-textarea-dirname" id="dirname_27">dirname</a></code> attribute can be
1.323 mike 993: specified:</p>
994:
995: <pre><p>If you have any comments, please let us know (you may use either English or Hebrew for your comments):
996: <textarea cols=80 name=comments dirname=comments.dir></textarea></p></pre>
997:
1.455 mike 998: </div><h4 id="the-keygen-element"><span class="secno">4.10.14 </span>The <dfn aria-haspopup="true" role="button" tabindex="0"><code>keygen</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.442 mike 999: <dd><a href="content-models.html#flow-content" id="flow-content_129">Flow content</a>.</dd>
1.415 mike 1000: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_148">Phrasing content</a>.</dd>
1001: <dd><a href="content-models.html#interactive-content" id="interactive-content_17">Interactive content</a>.</dd>
1002: <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>
1.424 mike 1003: <dt>Contexts in which this element can be used:</dt>
1.415 mike 1004: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_149">phrasing content</a> is expected.</dd>
1.424 mike 1005: <dt>Content model:</dt>
1.9 mike 1006: <dd>Empty.</dd>
1.424 mike 1007: <dt>Content attributes:</dt>
1.442 mike 1008: <dd><a href="elements.html#global-attributes" id="global-attributes_95">Global attributes</a></dd>
1.415 mike 1009: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus_7">autofocus</a></code></dd>
1.413 mike 1010: <dd><code title="attr-keygen-challenge"><a href="#attr-keygen-challenge" id="challenge">challenge</a></code></dd>
1.415 mike 1011: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled_19">disabled</a></code></dd>
1012: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_55">form</a></code></dd>
1.413 mike 1013: <dd><code title="attr-keygen-keytype"><a href="#attr-keygen-keytype" id="keytype">keytype</a></code></dd>
1.415 mike 1014: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name_43">name</a></code></dd>
1.424 mike 1015: <dt>DOM interface:</dt>
1.9 mike 1016: <dd>
1.455 mike 1017: <pre class="idl">interface <dfn aria-haspopup="true" id="htmlkeygenelement" role="button" tabindex="0">HTMLKeygenElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_106">HTMLElement</a> {
1.162 mike 1018: 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>;
1019: 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>;
1020: attribute boolean <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fe-disabled" title='Read about this "disabled" reference in the full HTML5 spec.'>disabled</a>;
1.415 mike 1021: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement_9">HTMLFormElement</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fae-form" title='Read about this "form" reference in the full HTML5 spec.'>form</a>;
1.162 mike 1022: 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>;
1023: 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>;
1024:
1025: 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>;
1026:
1027: 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>;
1028: 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>;
1029: 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>;
1030: 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>();
1031: 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 1032:
1.162 mike 1033: 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 1034: };</pre>
1035: </dd>
1.415 mike 1036: </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 1037: pair generator control. When the control's form is submitted, the
1038: private key is stored in the local keystore, and the public key is
1.455 mike 1039: packaged and sent to the server.<p>The <dfn aria-haspopup="true" id="attr-keygen-challenge" role="button" tabindex="0" title="attr-keygen-challenge"><code>challenge</code></dfn> attribute
1.9 mike 1040: may be specified. Its value will be packaged with the submitted
1.455 mike 1041: key.<p>The <dfn aria-haspopup="true" id="attr-keygen-keytype" role="button" tabindex="0" title="attr-keygen-keytype"><code>keytype</code></dfn>
1.415 mike 1042: attribute is an <a href="common-microsyntaxes.html#enumerated-attribute" id="enumerated-attribute_11">enumerated attribute</a>. The following
1.160 mike 1043: table lists the keywords and states for the attribute — the
1.9 mike 1044: keywords in the left column map to the states listed in the cell in
1045: the second column on the same row as the keyword. User agents are
1.26 mike 1046: not required to support these values, and must only recognize values
1.160 mike 1047: whose corresponding algorithms they support.<table><thead><tr><th> Keyword <th> State
1048: <tbody><tr><td> <code title="">rsa</code>
1049: <td> <i title="">RSA</i>
1050: </table><p>The <i>invalid value default</i> state is the <i title="">unknown</i> state. The <i>missing value default</i> state
1051: 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
1052: user agents are to support — it is possible for a user agent
1.415 mike 1053: 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
1054: explicitly associate the <code><a href="#the-keygen-element" id="keygen_13">keygen</a></code> element with its
1055: <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>
1056: attribute represents the element's name. The <code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled_20">disabled</a></code> attribute is used to make
1.9 mike 1057: the control non-interactive and to prevent its value from being
1.415 mike 1058: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus_8">autofocus</a></code>
1.424 mike 1059: attribute controls focus.<dl class="domintro"><dt><var title="">keygen</var> . <code title="attr-keygen-type">type</code></dt>
1.9 mike 1060:
1061: <dd>
1062:
1063: <p>Returns the string "<code title="">keygen</code>".</p>
1064:
1065: </dd>
1066:
1067: </dl><p class="note">This specification does not specify how the private
1068: key generated is to be used. It is expected that after receiving the
1.162 mike 1069: <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 1070: server will generate a client certificate and offer it back to the
1071: user for download; this certificate, once downloaded and stored in
1072: the key store along with the private key, can then be used to
1.88 mike 1073: authenticate to services that use TLS and certificate
1.412 mike 1074: authentication.<div class="example">
1.9 mike 1075:
1076: <p>To generate a key pair, add the private key to the user's key
1077: store, and submit the public key to the server, markup such as the
1078: following can be used:</p>
1079:
1.22 mike 1080: <pre><form action="processkey.cgi" method="post" enctype="multipart/form-data">
1.9 mike 1081: <p><keygen name="key"></p>
1082: <p><input type=submit value="Submit key..."></p>
1083: </form></pre>
1084:
1085: <p>The server will then receive a form submission with a packaged
1086: RSA public key as the value of "<code title="">key</code>". This
1087: can then be used for various purposes, such as generating a client
1088: certificate, as mentioned above.</p>
1089:
1.455 mike 1090: </div><h4 id="the-output-element"><span class="secno">4.10.15 </span>The <dfn aria-haspopup="true" role="button" tabindex="0"><code>output</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.442 mike 1091: <dd><a href="content-models.html#flow-content" id="flow-content_130">Flow content</a>.</dd>
1.415 mike 1092: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_150">Phrasing content</a>.</dd>
1093: <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>
1.424 mike 1094: <dt>Contexts in which this element can be used:</dt>
1.415 mike 1095: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_151">phrasing content</a> is expected.</dd>
1.424 mike 1096: <dt>Content model:</dt>
1.415 mike 1097: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_152">Phrasing content</a>.</dd>
1.424 mike 1098: <dt>Content attributes:</dt>
1.442 mike 1099: <dd><a href="elements.html#global-attributes" id="global-attributes_96">Global attributes</a></dd>
1.415 mike 1100: <dd><code title="attr-output-for"><a href="#attr-output-for" id="for_2">for</a></code></dd>
1101: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_57">form</a></code></dd>
1102: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name_45">name</a></code></dd>
1.424 mike 1103: <dt>DOM interface:</dt>
1.9 mike 1104: <dd>
1.455 mike 1105: <pre class="idl">interface <dfn aria-haspopup="true" id="htmloutputelement" role="button" tabindex="0">HTMLOutputElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_107">HTMLElement</a> {
1.415 mike 1106: [PutForwards=<a class="full-spec-link" href="http://dev.w3.org/html5/spec/common-dom-interfaces.html#dom-domsettabletokenlist-value" title='Read about this "value" reference in the full HTML5 spec.'>value</a>] readonly attribute <a href="urls.html#domsettabletokenlist" id="domsettabletokenlist_5">DOMSettableTokenList</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-output-htmlfor" title='Read about this "htmlFor" reference in the full HTML5 spec.'>htmlFor</a>;
1107: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement_10">HTMLFormElement</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fae-form" title='Read about this "form" reference in the full HTML5 spec.'>form</a>;
1.162 mike 1108: 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>;
1109:
1110: 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>;
1111: 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>;
1112: 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>;
1113:
1114: 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>;
1115: 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>;
1116: 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>;
1117: 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>();
1118: 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 1119:
1.162 mike 1120: 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 1121: };</pre>
1122: </dd>
1.415 mike 1123: </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
1.455 mike 1124: calculation.<p>The <dfn aria-haspopup="true" id="attr-output-for" role="button" tabindex="0" title="attr-output-for"><code>for</code></dfn> content
1.9 mike 1125: attribute allows an explicit relationship to be made between the
1126: result of a calculation and the elements that represent the values
1127: that went into the calculation or that otherwise influenced the
1.415 mike 1128: calculation. The <code title="attr-output-for"><a href="#attr-output-for" id="for_3">for</a></code> attribute,
1129: if specified, must contain a string consisting of an <a href="common-microsyntaxes.html#unordered-set-of-unique-space-separated-tokens" id="unordered-set-of-unique-space-separated-tokens_2">unordered
1.265 mike 1130: set of unique space-separated tokens</a> that are
1.415 mike 1131: <a href="infrastructure.html#case-sensitive" id="case-sensitive_5">case-sensitive</a>, each of which must have the value of an
1132: <a href="elements.html#concept-id" id="concept-id_19" title="concept-id">ID</a> of an element in the same
1133: <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
1134: explicitly associate the <code><a href="#the-output-element" id="output_12">output</a></code> element with its
1135: <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>
1.424 mike 1136: 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 1137:
1138: <dd>
1139:
1140: <p>Returns the element's current value.</p>
1141:
1142: <p>Can be set, to change the value.</p>
1143:
1144: </dd>
1145:
1.424 mike 1146: <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 1147:
1148: <dd>
1149:
1150: <p>Returns the element's current default value.</p>
1151:
1152: <p>Can be set, to change the default value.</p>
1153:
1154: </dd>
1155:
1.424 mike 1156: <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 1157:
1158: <dd>
1159:
1160: <p>Returns the string "<code title="">output</code>".</p>
1161:
1162: </dd>
1163:
1164: </dl><div class="example">
1165:
1.415 mike 1166: <p>A simple calculator could use <code><a href="#the-output-element" id="output_13">output</a></code> for its
1.9 mike 1167: display of calculated results:</p>
1168:
1.388 mike 1169: <pre><form onsubmit="return false" oninput="o.value = a.valueAsNumber + b.valueAsNumber">
1.9 mike 1170: <input name=a type=number step=any> +
1171: <input name=b type=number step=any> =
1.388 mike 1172: <output name=o></output>
1.9 mike 1173: </form></pre>
1174:
1.455 mike 1175: </div><h4 id="the-progress-element"><span class="secno">4.10.16 </span>The <dfn aria-haspopup="true" role="button" tabindex="0"><code>progress</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.442 mike 1176: <dd><a href="content-models.html#flow-content" id="flow-content_131">Flow content</a>.</dd>
1.415 mike 1177: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_153">Phrasing content</a>.</dd>
1178: <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>
1.424 mike 1179: <dt>Contexts in which this element can be used:</dt>
1.415 mike 1180: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_154">phrasing content</a> is expected.</dd>
1.424 mike 1181: <dt>Content model:</dt>
1.415 mike 1182: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_155">Phrasing content</a>, but there must be no <code><a href="#the-progress-element" id="progress_8">progress</a></code> element descendants.</dd>
1.424 mike 1183: <dt>Content attributes:</dt>
1.442 mike 1184: <dd><a href="elements.html#global-attributes" id="global-attributes_97">Global attributes</a></dd>
1.415 mike 1185: <dd><code title="attr-progress-value"><a href="#attr-progress-value" id="value_38">value</a></code></dd>
1186: <dd><code title="attr-progress-max"><a href="#attr-progress-max" id="max_36">max</a></code></dd>
1187: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_59">form</a></code></dd>
1.424 mike 1188: <dt>DOM interface:</dt>
1.11 mike 1189: <dd>
1.455 mike 1190: <pre class="idl">interface <dfn aria-haspopup="true" id="htmlprogresselement" role="button" tabindex="0">HTMLProgressElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_108">HTMLElement</a> {
1.197 mike 1191: 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>;
1192: 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>;
1193: readonly attribute double <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-progress-position" title='Read about this "position" reference in the full HTML5 spec.'>position</a>;
1.415 mike 1194: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement_11">HTMLFormElement</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fae-form" title='Read about this "form" reference in the full HTML5 spec.'>form</a>;
1.162 mike 1195: 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 1196: };</pre>
1197: </dd>
1.415 mike 1198: </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 1199: completion progress of a task. The progress is either indeterminate,
1200: indicating that progress is being made but that it is not clear how
1.278 mike 1201: much more work remains to be done before the task is complete (e.g.
1202: because the task is waiting for a remote host to respond), or the
1203: progress is a number in the range zero to a maximum, giving the
1.160 mike 1204: fraction of work that has so far been completed.<p>There are two attributes that determine the current task
1.455 mike 1205: completion represented by the element. The <dfn aria-haspopup="true" id="attr-progress-value" role="button" tabindex="0" title="attr-progress-value"><code>value</code></dfn> attribute
1206: specifies how much of the task has been completed, and the <dfn aria-haspopup="true" id="attr-progress-max" role="button" tabindex="0" title="attr-progress-max"><code>max</code></dfn> attribute specifies
1.278 mike 1207: how much work the task requires in total. The units are arbitrary
1.443 mike 1208: and not specified.<p class="note">To make an determinate progress bar, add a <code title="attr-progress-value"><a href="#attr-progress-value" id="value_39">value</a></code> attribute with the current
1209: progress (either a number from 0.0 to 1.0, or, if the <code title="attr-progress-max"><a href="#attr-progress-max" id="max_37">max</a></code> attribute is specified, a
1210: number from 0 to the value of the <code title="attr-progress-max"><a href="#attr-progress-max" id="max_38">max</a></code> attribute. To make an
1211: indeterminate progress bar, remove the <code title="attr-progress-value"><a href="#attr-progress-value" id="value_40">value</a></code> attribute.<p>Authors are encouraged to also include the current value and the
1.11 mike 1212: maximum value inline as text inside the element, so that the
1.160 mike 1213: progress is made available to users of legacy user agents.<div class="example">
1.11 mike 1214: <p>Here is a snippet of a Web application that shows the progress
1215: of some automated task:</p>
1216: <pre><section>
1217: <h2>Task Progress</h2>
1218: <p>Progress: <progress id="p" max=100><span>0</span>%</progress></p>
1219: <script>
1220: var progressBar = document.getElementById('p');
1221: function updateProgress(newValue) {
1222: progressBar.value = newValue;
1223: progressBar.getElementsByTagName('span')[0].textContent = newValue;
1224: }
1225: </script>
1226: </section></pre>
1227: <p>(The <code>updateProgress()</code> method in this example would
1228: be called by some other code on the page to update the actual
1229: progress bar as the task progressed.)</p>
1.443 mike 1230: </div><p>The <code title="attr-progress-value"><a href="#attr-progress-value" id="value_41">value</a></code> and <code title="attr-progress-max"><a href="#attr-progress-max" id="max_39">max</a></code> attributes, when present, must
1.415 mike 1231: 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
1.443 mike 1232: floating point numbers</a>. The <code title="attr-progress-value"><a href="#attr-progress-value" id="value_42">value</a></code> attribute, if present, must
1.11 mike 1233: have a value equal to or greater than zero, and less than or equal
1.443 mike 1234: to the value of the <code title="attr-progress-max"><a href="#attr-progress-max" id="max_40">max</a></code>
1235: attribute, if present, or 1.0, otherwise. The <code title="attr-progress-max"><a href="#attr-progress-max" id="max_41">max</a></code> attribute, if present, must
1.415 mike 1236: 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 1237: element to use for something that is just a gauge, as opposed to
1238: task progress. For instance, indicating disk space usage using
1.415 mike 1239: <code><a href="#the-progress-element" id="progress_11">progress</a></code> would be inappropriate. Instead, the
1.424 mike 1240: <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 1241:
1242: <dd>
1243:
1244: <p>For a determinate progress bar (one with known current and
1245: maximum values), returns the result of dividing the current value
1246: by the maximum value.</p>
1247:
1.160 mike 1248: <p>For an indeterminate progress bar, returns −1.</p>
1.11 mike 1249:
1.278 mike 1250: </dd>
1251:
1.455 mike 1252: </dl><h4 id="the-meter-element"><span class="secno">4.10.17 </span>The <dfn aria-haspopup="true" role="button" tabindex="0"><code>meter</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.442 mike 1253: <dd><a href="content-models.html#flow-content" id="flow-content_132">Flow content</a>.</dd>
1.415 mike 1254: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_156">Phrasing content</a>.</dd>
1255: <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>
1.424 mike 1256: <dt>Contexts in which this element can be used:</dt>
1.415 mike 1257: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_157">phrasing content</a> is expected.</dd>
1.424 mike 1258: <dt>Content model:</dt>
1.415 mike 1259: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_158">Phrasing content</a>, but there must be no <code><a href="#the-meter-element" id="meter_9">meter</a></code> element descendants.</dd>
1.424 mike 1260: <dt>Content attributes:</dt>
1.442 mike 1261: <dd><a href="elements.html#global-attributes" id="global-attributes_98">Global attributes</a></dd>
1.443 mike 1262: <dd><code title="attr-meter-value"><a href="#attr-meter-value" id="value_44">value</a></code></dd>
1.415 mike 1263: <dd><code title="attr-meter-min"><a href="#attr-meter-min" id="min_38">min</a></code></dd>
1.443 mike 1264: <dd><code title="attr-meter-max"><a href="#attr-meter-max" id="max_43">max</a></code></dd>
1.413 mike 1265: <dd><code title="attr-meter-low"><a href="#attr-meter-low" id="low">low</a></code></dd>
1266: <dd><code title="attr-meter-high"><a href="#attr-meter-high" id="high">high</a></code></dd>
1267: <dd><code title="attr-meter-optimum"><a href="#attr-meter-optimum" id="optimum">optimum</a></code></dd>
1.415 mike 1268: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_60">form</a></code></dd>
1.424 mike 1269: <dt>DOM interface:</dt>
1.11 mike 1270: <dd>
1.455 mike 1271: <pre class="idl">interface <dfn aria-haspopup="true" id="htmlmeterelement" role="button" tabindex="0">HTMLMeterElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_109">HTMLElement</a> {
1.197 mike 1272: 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>;
1273: 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>;
1274: 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>;
1275: 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>;
1276: 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>;
1277: attribute double <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#dom-meter-optimum" title='Read about this "optimum" reference in the full HTML5 spec.'>optimum</a>;
1.415 mike 1278: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement_12">HTMLFormElement</a> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#dom-fae-form" title='Read about this "form" reference in the full HTML5 spec.'>form</a>;
1.162 mike 1279: 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 1280: };</pre>
1281: </dd>
1.415 mike 1282: </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 1283: measurement within a known range, or a fractional value; for example
1284: disk usage, the relevance of a query result, or the fraction of a
1.415 mike 1285: 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 1286: indicate progress (as in a progress bar). For that role, HTML
1.415 mike 1287: 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 1288: represent a scalar value of arbitrary range — for example, it
1.11 mike 1289: would be wrong to use this to report a weight, or height, unless
1.160 mike 1290: there is a known maximum value.<p>There are six attributes that determine the semantics of the
1.455 mike 1291: gauge represented by the element.<p>The <dfn aria-haspopup="true" id="attr-meter-min" role="button" tabindex="0" title="attr-meter-min"><code>min</code></dfn> attribute
1292: specifies the lower bound of the range, and the <dfn aria-haspopup="true" id="attr-meter-max" role="button" tabindex="0" title="attr-meter-max"><code>max</code></dfn> attribute specifies
1293: the upper bound. The <dfn aria-haspopup="true" id="attr-meter-value" role="button" tabindex="0" title="attr-meter-value"><code>value</code></dfn> attribute
1.11 mike 1294: specifies the value to have the gauge indicate as the "measured"
1.160 mike 1295: value.<p>The other three attributes can be used to segment the gauge's
1.11 mike 1296: range into "low", "medium", and "high" parts, and to indicate which
1.455 mike 1297: part of the gauge is the "optimum" part. The <dfn aria-haspopup="true" id="attr-meter-low" role="button" tabindex="0" title="attr-meter-low"><code>low</code></dfn> attribute specifies
1298: the range that is considered to be the "low" part, and the <dfn aria-haspopup="true" id="attr-meter-high" role="button" tabindex="0" title="attr-meter-high"><code>high</code></dfn> attribute specifies
1299: the range that is considered to be the "high" part. The <dfn aria-haspopup="true" id="attr-meter-optimum" role="button" tabindex="0" title="attr-meter-optimum"><code>optimum</code></dfn> attribute
1.11 mike 1300: gives the position that is "optimum"; if that is higher than the
1301: "high" value then this indicates that the higher the value, the
1302: better; if it's lower than the "low" mark then it indicates that
1303: lower values are better, and naturally if it is in between then it
1.443 mike 1304: indicates that neither high nor low values are good.<p> The <code title="attr-meter-value"><a href="#attr-meter-value" id="value_45">value</a></code> attribute must be
1305: specified. The <code title="attr-meter-value"><a href="#attr-meter-value" id="value_46">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_44">max</a></code>, and <code title="attr-meter-optimum"><a href="#attr-meter-optimum" id="optimum_0">optimum</a></code> attributes, when present,
1.415 mike 1306: must have values that are <a href="common-microsyntaxes.html#valid-floating-point-number" id="valid-floating-point-number_10" title="valid floating point
1.443 mike 1307: 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_47">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 1308: attribute is specified, then let <var title="">minimum</var> be that
1.443 mike 1309: attribute's value; otherwise, let it be zero.<p>If the <code title="attr-meter-max"><a href="#attr-meter-max" id="max_45">max</a></code> attribute
1.11 mike 1310: attribute is specified, then let <var title="">maximum</var> be that
1.160 mike 1311: attribute's value; otherwise, let it be 1.0.<p>The following inequalities must hold, as applicable:<ul class="brief"><li><var title="">minimum</var> ≤ <var title="">value</var> ≤ <var title="">maximum</var></li>
1.415 mike 1312: <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>
1313: <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>
1314: <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>
1315: <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 1316: </ul><p class="note">If no minimum or maximum is specified, then the
1.11 mike 1317: range is assumed to be 0..1, and the value thus has to be within
1.160 mike 1318: that range.<p>Authors are encouraged to include a textual representation of the
1.11 mike 1319: gauge's state in the element's contents, for users of user agents
1.415 mike 1320: that do not support the <code><a href="#the-meter-element" id="meter_13">meter</a></code> element.<div class="example">
1.11 mike 1321:
1322: <p>The following examples show three gauges that would all be
1323: three-quarters full:</p>
1324:
1325: <pre>Storage space usage: <meter value=6 max=8>6 blocks used (out of 8 total)</meter>
1326: Voter turnout: <meter value=0.75><img alt="75%" src="graph75.png"></meter>
1327: Tickets sold: <meter min="0" max="100" value="75"></meter></pre>
1328:
1329: <p>The following example is incorrect use of the element, because
1330: it doesn't give a range (and since the default maximum is 1, both
1331: of the gauges would end up looking maxed out):</p>
1332:
1333: <pre class="bad"><p>The grapefruit pie had a radius of <meter value=12>12cm</meter>
1334: and a height of <meter value=2>2cm</meter>.</p> <!-- <strong>BAD!</strong> --></pre>
1335:
1336: <p>Instead, one would either not include the meter element, or use
1337: the meter element with a defined range to give the dimensions in
1338: context compared to other pies:</p>
1339:
1340: <pre><p>The grapefruit pie had a radius of 12cm and a height of
1341: 2cm.</p>
1342: <dl>
1343: <dt>Radius: <dd> <meter min=0 max=20 value=12>12cm</meter>
1344: <dt>Height: <dd> <meter min=0 max=10 value=2>2cm</meter>
1345: </dl></pre>
1346:
1347: </div><p>There is no explicit way to specify units in the
1.415 mike 1348: <code><a href="#the-meter-element" id="meter_14">meter</a></code> element, but the units may be specified in the
1349: <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 1350:
1351: <p>The example above could be extended to mention the units:</p>
1352:
1353: <pre><dl>
1354: <dt>Radius: <dd> <meter min=0 max=20 value=12 title="centimeters">12cm</meter>
1355: <dt>Height: <dd> <meter min=0 max=10 value=2 title="centimeters">2cm</meter>
1356: </dl></pre>
1357:
1358: </div><div class="example">
1359: <p>The following markup:</p>
1360: <pre><h3>Suggested groups</h3>
1361: <menu type="toolbar">
1362: <a href="?cmd=hsg" onclick="hideSuggestedGroups()">Hide suggested groups</a>
1363: </menu>
1364: <ul>
1365: <li>
1366: <p><a href="/group/comp.infosystems.www.authoring.stylesheets/view">comp.infosystems.www.authoring.stylesheets</a> -
1367: <a href="/group/comp.infosystems.www.authoring.stylesheets/subscribe">join</a></p>
1368: <p>Group description: <strong>Layout/presentation on the WWW.</strong></p>
1369: <p><strong><meter value="0.5">Moderate activity,</meter></strong> Usenet, 618 subscribers</p>
1370: </li>
1371: <li>
1372: <p><a href="/group/netscape.public.mozilla.xpinstall/view">netscape.public.mozilla.xpinstall</a> -
1373: <a href="/group/netscape.public.mozilla.xpinstall/subscribe">join</a></p>
1374: <p>Group description: <strong>Mozilla XPInstall discussion.</strong></p>
1375: <p><strong><meter value="0.25">Low activity,</meter></strong> Usenet, 22 subscribers</p>
1376: </li>
1377: <li>
1378: <p><a href="/group/mozilla.dev.general/view">mozilla.dev.general</a> -
1379: <a href="/group/mozilla.dev.general/subscribe">join</a></p>
1380: <p><strong><meter value="0.25">Low activity,</meter></strong> Usenet, 66 subscribers</p>
1381: </li>
1382: </ul></pre>
1383: <p>Might be rendered as follows:</p>
1.203 mike 1384: <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 1385: </div><p>User agents combine the value of
1.415 mike 1386: 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 1387: attributes to provide context-sensitive help or inline text
1.160 mike 1388: detailing the actual values.<div class="example">
1.11 mike 1389: <p>For example, the following snippet:</p>
1390: <pre><meter min=0 max=60 value=23.2 title=seconds></meter></pre>
1391: <p>...might cause the user agent to display a gauge with a tooltip
1392: saying "Value: 23.2 out of 60." on one line and "seconds" on a
1393: second line.</p>
1.415 mike 1394: </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
1395: explicitly associate the <code><a href="#the-meter-element" id="meter_15">meter</a></code> element with its
1396: <a href="association-of-controls-and-forms.html#form-owner" id="form-owner_13">form owner</a>.<div class="example">
1.11 mike 1397:
1398: <p>The following example shows how a gauge could fall back to
1399: localized or pretty-printed text.</p>
1400:
1.160 mike 1401: <pre><p>Disk usage: <meter min=0 value=170261928 max=233257824>170 261 928 bytes used
1402: out of 233 257 824 bytes available</meter></p></pre>
1.11 mike 1403:
1.160 mike 1404: </div>
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