Annotation of html5/spec-author-view/the-button-element.html, revision 1.159
1.156 mike 1: <!DOCTYPE html>
2: <!-- when publishing, change bits marked ZZZ --><html lang="en-US-x-Hixie" class="split chapter"><head><meta content="text/html; charset=ascii" http-equiv="Content-Type"><title>4.10.8 The button element — HTML5 (Edition for Web Authors)</title><link href="whatwg.css" rel="stylesheet"><style type="text/css">
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1.1 mike 118:
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1.121 mike 185:
1.1 mike 186: </style><style type="text/css">
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1.11 mike 231: .details-example img { vertical-align: top; }
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1.26 mike 233: #named-character-references-table {
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1.25 mike 268: </style><link href="data:text/css," id="complete" rel="stylesheet" title="Complete specification"><link href="data:text/css,.impl%20%7B%20display:%20none;%20%7D%0Ahtml%20%7B%20border:%20solid%20yellow;%20%7D%20.domintro:before%20%7B%20display:%20none;%20%7D" id="author" rel="alternate stylesheet" title="Author documentation only"><link href="data:text/css,.impl%20%7B%20background:%20%23FFEEEE;%20%7D%20.domintro:before%20%7B%20background:%20%23FFEEEE;%20%7D" id="highlight" rel="alternate stylesheet" title="Highlight implementation requirements"><script type="text/javascript">
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1.9 mike 277: }
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1.9 mike 283: }
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1.156 mike 305: <link href="Overview.html#contents" title="Table of contents" rel="index">
306: <link href="association-of-controls-and-forms.html" title="4.10.18 Association of controls and forms" rel="next">
307: </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
1.9 mike 308: <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 309:
1.159 ! mike 310: <h1>HTML5 (Edition for Web Authors)<span class="rcsrevision"> revision 1.4234</span></h1>
1.9 mike 311: </div><div>
1.156 mike 312: <a href="common-input-element-attributes.html">← 4.10.7.2 Common input element attributes</a> –
313: <a href="Overview.html#contents">Table of contents</a> –
314: <a href="association-of-controls-and-forms.html">4.10.18 Association of controls and forms →</a>
315: <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><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><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><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><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><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><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><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><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><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></li></ol></li></ol></li></ol></div>
316:
317: <h4 id="the-button-element"><span class="secno">4.10.8 </span>The <dfn><code>button</code></dfn> element</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><dl class="element"><dt>Categories</dt>
318: <dd><a href="content-models.html#flow-content" id="flow-content-114">Flow content</a>.</dd>
319: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-118">Phrasing content</a>.</dd>
320: <dd><a href="content-models.html#interactive-content" id="interactive-content-14">Interactive content</a>.</dd>
321: <dd><a href="forms.html#category-listed" id="category-listed-4" 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-3" title="category-submit">submittable</a> <a href="forms.html#form-associated-element" id="form-associated-element-8">form-associated element</a>.</dd>
1.9 mike 322: <dt>Contexts in which this element may be used:</dt>
1.156 mike 323: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content-119">phrasing content</a> is expected.</dd>
1.9 mike 324: <dt>Content model:</dt>
1.156 mike 325: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-120">Phrasing content</a>, but there must be no <a href="content-models.html#interactive-content" id="interactive-content-15">interactive content</a> descendant.</dd>
1.9 mike 326: <dt>Content attributes:</dt>
1.156 mike 327: <dd><a href="elements.html#global-attributes" id="global-attributes-85">Global attributes</a></dd>
328: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus-1">autofocus</a></code></dd>
329: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled-12">disabled</a></code></dd>
330: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form-48">form</a></code></dd>
331: <dd><code title="attr-fs-formaction"><a href="association-of-controls-and-forms.html#attr-fs-formaction" id="formaction-26">formaction</a></code></dd>
332: <dd><code title="attr-fs-formenctype"><a href="association-of-controls-and-forms.html#attr-fs-formenctype" id="formenctype-26">formenctype</a></code></dd>
333: <dd><code title="attr-fs-formmethod"><a href="association-of-controls-and-forms.html#attr-fs-formmethod" id="formmethod-26">formmethod</a></code></dd>
334: <dd><code title="attr-fs-formnovalidate"><a href="association-of-controls-and-forms.html#attr-fs-formnovalidate" id="formnovalidate-27">formnovalidate</a></code></dd>
335: <dd><code title="attr-fs-formtarget"><a href="association-of-controls-and-forms.html#attr-fs-formtarget" id="formtarget-26">formtarget</a></code></dd>
336: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name-37">name</a></code></dd>
337: <dd><code title="attr-button-type"><a href="#attr-button-type" id="type-68">type</a></code></dd>
338: <dd><code title="attr-button-value"><a href="#attr-button-value" id="value-29">value</a></code></dd>
1.9 mike 339: <dt>DOM interface:</dt>
340: <dd>
1.156 mike 341: <pre class="idl">interface <dfn id="htmlbuttonelement">HTMLButtonElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-93">HTMLElement</a> {
342: attribute boolean <a 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.' class="full-spec-link">autofocus</a>;
343: attribute boolean <a 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.' class="full-spec-link">disabled</a>;
344: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement-5">HTMLFormElement</a> <a 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.' class="full-spec-link">form</a>;
345: attribute DOMString <a 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.' class="full-spec-link">formAction</a>;
346: attribute DOMString <a 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.' class="full-spec-link">formEnctype</a>;
347: attribute DOMString <a 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.' class="full-spec-link">formMethod</a>;
348: attribute DOMString <a 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.' class="full-spec-link">formNoValidate</a>;
349: attribute DOMString <a 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.' class="full-spec-link">formTarget</a>;
350: attribute DOMString <a 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.' class="full-spec-link">name</a>;
351: attribute DOMString <a 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.' class="full-spec-link">type</a>;
352: attribute DOMString <a 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.' class="full-spec-link">value</a>;
353:
354: readonly attribute boolean <a 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.' class="full-spec-link">willValidate</a>;
355: readonly attribute <a href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#validitystate" class="full-spec-link" title='Read about this "ValidityState" reference in the full HTML5 spec.'>ValidityState</a> <a 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.' class="full-spec-link">validity</a>;
356: readonly attribute DOMString <a 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.' class="full-spec-link">validationMessage</a>;
357: boolean <a 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.' class="full-spec-link">checkValidity</a>();
358: void <a 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.' class="full-spec-link">setCustomValidity</a>(in DOMString error);
1.9 mike 359:
1.156 mike 360: readonly attribute <a href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" class="full-spec-link" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a> <a href="http://dev.w3.org/html5/spec/forms.html#dom-lfe-labels" title='Read about this "labels" reference in the full HTML5 spec.' class="full-spec-link">labels</a>;
1.9 mike 361: };</pre>
362: </dd>
1.156 mike 363: </dl><p>The <code><a href="#the-button-element" id="button-11">button</a></code> element <a href="http://dev.w3.org/html5/spec/rendering.html#represents" class="full-spec-link" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a
364: button. </p><p>The element is a <a href="forms.html#concept-button" id="concept-button-4" title="concept-button">button</a>.</p><p>The <dfn id="attr-button-type" title="attr-button-type"><code>type</code></dfn>
1.9 mike 365: attribute controls the behavior of the button when it is activated.
1.156 mike 366: It is an <a href="common-microsyntaxes.html#enumerated-attribute" id="enumerated-attribute-8">enumerated attribute</a>. The following table
367: lists the keywords and states for the attribute — the keywords
1.9 mike 368: in the left column map to the states in the cell in the second
1.156 mike 369: column on the same row as the keyword.</p><table><thead><tr><th> Keyword
370: </th><th> State
371: </th><th> Brief description
372: </th></tr></thead><tbody><tr><td><dfn id="attr-button-type-submit" title="attr-button-type-submit"><code>submit</code></dfn>
373: </td><td><a 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.' class="full-spec-link">Submit Button</a>
374: </td><td>Submits the form.
375: </td></tr><tr><td><dfn id="attr-button-type-reset" title="attr-button-type-reset"><code>reset</code></dfn>
376: </td><td><a 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.' class="full-spec-link">Reset Button</a>
377: </td><td>Resets the form.
378: </td></tr><tr><td><dfn id="attr-button-type-button" title="attr-button-type-button"><code>button</code></dfn>
379: </td><td><a 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.' class="full-spec-link">Button</a>
380: </td><td>Does nothing.
381: </td></tr></tbody></table><p>The <i>missing value default</i> is the <a 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.' class="full-spec-link">Submit Button</a>
382: state.</p><p>If the <code title="attr-button-type"><a href="#attr-button-type" id="type-69">type</a></code> attribute is in
383: the <a 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.' class="full-spec-link">Submit Button</a>
384: 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><p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form-49">form</a></code> attribute is used to
385: explicitly associate the <code><a href="#the-button-element" id="button-12">button</a></code> element with its
386: <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>
387: attribute represents the element's name. The <code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled-13">disabled</a></code> attribute is used to make
1.9 mike 388: the control non-interactive and to prevent its value from being
1.156 mike 389: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus-2">autofocus</a></code>
390: 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
391: <a href="association-of-controls-and-forms.html#attributes-for-form-submission" id="attributes-for-form-submission-3">attributes for form submission</a>.</p><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 392: be used to make submit buttons that do not trigger the constraint
1.156 mike 393: validation.</p><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
394: if the element's <code title="attr-button-type"><a href="#attr-button-type" id="type-70">type</a></code>
395: attribute is not in the <a 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.' class="full-spec-link">Submit Button</a>
396: state.</p><p>The <dfn id="attr-button-value" title="attr-button-value"><code>value</code></dfn>
1.9 mike 397: attribute gives the element's value for the purposes of form
1.156 mike 398: submission. The element's <a 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.' class="full-spec-link">value</a> is the value of the element's
399: <code title="attr-button-value"><a href="#attr-button-value" id="value-30">value</a></code> attribute, if there is
400: one, or the empty string otherwise.</p><p class="note">A button (and its value) is only included in the
1.9 mike 401: form submission if the button itself was used to initiate the form
1.156 mike 402: submission.</p><div class="example">
1.9 mike 403:
404: <p>The following button is labeled "Show hint" and pops up a dialog
405: box when activated:</p>
406:
407: <pre><button type=button
408: onclick="alert('This 15-20 minute piece was composed by George Gershwin.')">
409: Show hint
410: </button></pre>
411:
1.156 mike 412: </div><h4 id="the-select-element"><span class="secno">4.10.9 </span>The <dfn><code>select</code></dfn> element</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><dl class="element"><dt>Categories</dt>
413: <dd><a href="content-models.html#flow-content" id="flow-content-115">Flow content</a>.</dd>
414: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-121">Phrasing content</a>.</dd>
415: <dd><a href="content-models.html#interactive-content" id="interactive-content-16">Interactive content</a>.</dd>
416: <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-4" title="category-label">labelable</a>, <a href="forms.html#category-submit" id="category-submit-4" title="category-submit">submittable</a>, and <a href="forms.html#category-reset" id="category-reset-1" title="category-reset">resettable</a> <a href="forms.html#form-associated-element" id="form-associated-element-9">form-associated element</a>.</dd>
1.9 mike 417: <dt>Contexts in which this element may be used:</dt>
1.156 mike 418: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content-122">phrasing content</a> is expected.</dd>
1.9 mike 419: <dt>Content model:</dt>
1.156 mike 420: <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-2">optgroup</a></code> elements.</dd>
1.9 mike 421: <dt>Content attributes:</dt>
1.156 mike 422: <dd><a href="elements.html#global-attributes" id="global-attributes-86">Global attributes</a></dd>
423: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus-3">autofocus</a></code></dd>
424: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled-14">disabled</a></code></dd>
425: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form-50">form</a></code></dd>
426: <dd><code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple-29">multiple</a></code></dd>
427: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name-39">name</a></code></dd>
428: <dd><code title="attr-select-required"><a href="#attr-select-required" id="required-27">required</a></code></dd>
429: <dd><code title="attr-select-size"><a href="#attr-select-size" id="size-30">size</a></code></dd>
1.9 mike 430: <dt>DOM interface:</dt>
431: <dd>
1.156 mike 432: <pre class="idl">interface <dfn id="htmlselectelement">HTMLSelectElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-94">HTMLElement</a> {
433: attribute boolean <a 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.' class="full-spec-link">autofocus</a>;
434: attribute boolean <a 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.' class="full-spec-link">disabled</a>;
435: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement-6">HTMLFormElement</a> <a 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.' class="full-spec-link">form</a>;
436: attribute boolean <a 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.' class="full-spec-link">multiple</a>;
437: attribute DOMString <a 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.' class="full-spec-link">name</a>;
438: attribute boolean <a href="http://dev.w3.org/html5/spec/.html#dom-select-required" title='Read about this "required" reference in the full HTML5 spec.' class="full-spec-link">required</a>;
439: attribute unsigned long <a 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.' class="full-spec-link">size</a>;
440:
441: readonly attribute DOMString <a 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.' class="full-spec-link">type</a>;
442:
443: readonly attribute <a href="urls.html#htmloptionscollection" id="htmloptionscollection-3">HTMLOptionsCollection</a> <a 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.' class="full-spec-link">options</a>;
444: attribute unsigned long <a 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.' class="full-spec-link">length</a>;
445: caller getter any <a 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.' class="full-spec-link">item</a>(in unsigned long index);
446: caller getter any <a 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.' class="full-spec-link">namedItem</a>(in DOMString name);
447: void <a 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.' class="full-spec-link">add</a>(in <a href="elements.html#htmlelement" id="htmlelement-95">HTMLElement</a> element, in optional <a href="elements.html#htmlelement" id="htmlelement-96">HTMLElement</a> before);
448: void <a 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.' class="full-spec-link">add</a>(in <a href="elements.html#htmlelement" id="htmlelement-97">HTMLElement</a> element, in long before);
449: void <a 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.' class="full-spec-link">remove</a>(in long index);
450:
451: readonly attribute <a href="urls.html#htmlcollection" id="htmlcollection-35">HTMLCollection</a> <a 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.' class="full-spec-link">selectedOptions</a>;
452: attribute long <a 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.' class="full-spec-link">selectedIndex</a>;
453: attribute DOMString <a 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.' class="full-spec-link">value</a>;
454:
455: readonly attribute boolean <a 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.' class="full-spec-link">willValidate</a>;
456: readonly attribute <a href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#validitystate" class="full-spec-link" title='Read about this "ValidityState" reference in the full HTML5 spec.'>ValidityState</a> <a 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.' class="full-spec-link">validity</a>;
457: readonly attribute DOMString <a 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.' class="full-spec-link">validationMessage</a>;
458: boolean <a 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.' class="full-spec-link">checkValidity</a>();
459: void <a 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.' class="full-spec-link">setCustomValidity</a>(in DOMString error);
1.9 mike 460:
1.156 mike 461: readonly attribute <a href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" class="full-spec-link" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a> <a href="http://dev.w3.org/html5/spec/forms.html#dom-lfe-labels" title='Read about this "labels" reference in the full HTML5 spec.' class="full-spec-link">labels</a>;
1.9 mike 462: };</pre>
463: </dd>
464: </dl><!-- Proposals for v2:
465: * <select value=""> as an alternative to <option selected>
466: http://developers.slashdot.org/comments.pl?sid=426306&cid=22142072
1.11 mike 467: <Philip`> http://www.ipiao.com.cn/ does <select size="1" name="to"><script type="text/javascript">City_Default="PEK"</script><SCRIPT language=javascript
1.9 mike 468: src="/js/flightcity.js"></SCRIPT></select> which is the kind of thing that could be much simpler with <select value="PEK">
1.156 mike 469: --><p>The <code><a href="#the-select-element" id="select-17">select</a></code> element represents a control for
470: selecting amongst a set of options.</p><p>The <dfn id="attr-select-multiple" title="attr-select-multiple"><code>multiple</code></dfn>
471: attribute is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute-13">boolean attribute</a>. If the attribute is
472: present, then the <code><a href="#the-select-element" id="select-18">select</a></code> element
473: <a href="http://dev.w3.org/html5/spec/rendering.html#represents" class="full-spec-link" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a control for selecting zero or more options
474: from the <a href="#concept-select-option-list" id="concept-select-option-list-1" title="concept-select-option-list">list of
1.9 mike 475: options</a>. If the attribute is absent, then the
1.156 mike 476: <code><a href="#the-select-element" id="select-19">select</a></code> element <a href="http://dev.w3.org/html5/spec/rendering.html#represents" class="full-spec-link" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a control for
477: 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><p>The <dfn id="attr-select-size" title="attr-select-size"><code>size</code></dfn>
478: 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
479: 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>
480: greater than zero. If the <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple-30">multiple</a></code> attribute is present,
481: 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
482: default value is 4. If the <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple-31">multiple</a></code> attribute is absent,
483: 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
484: default value is 1.</p><p>The <dfn id="concept-select-option-list" title="concept-select-option-list">list of options</dfn>
485: for a <code><a href="#the-select-element" id="select-20">select</a></code> element consists of all the
486: <code><a href="#the-option-element" id="option-10">option</a></code> element children of the <code><a href="#the-select-element" id="select-21">select</a></code>
487: element, and all the <code><a href="#the-option-element" id="option-11">option</a></code> element children of all the
488: <code><a href="#the-optgroup-element" id="optgroup-3">optgroup</a></code> element children of the <code><a href="#the-select-element" id="select-22">select</a></code>
489: element, in <a href="infrastructure.html#tree-order" id="tree-order-5">tree order</a>.</p><p>The <dfn id="attr-select-required" title="attr-select-required"><code>required</code></dfn>
490: attribute is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute-14">boolean attribute</a>. When specified, the
1.138 mike 491: user will be required to select a value before submitting the
1.156 mike 492: form.</p><p>If a <code><a href="#the-select-element" id="select-23">select</a></code> element has a <code title="attr-select-required"><a href="#attr-select-required" id="required-28">required</a></code> attribute specified,
493: does not have a <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple-32">multiple</a></code>
494: attribute specified, and has a <a 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.' class="full-spec-link">display size</a> of 1; and if the
495: <a href="#concept-option-value" id="concept-option-value-0" title="concept-option-value">value</a> of the first
496: <code><a href="#the-option-element" id="option-12">option</a></code> element in the <code><a href="#the-select-element" id="select-24">select</a></code> element's
497: <a href="#concept-select-option-list" id="concept-select-option-list-3" title="concept-select-option-list">list of options</a> (if
498: any) is the empty string, and that <code><a href="#the-option-element" id="option-13">option</a></code> is not <a href="#concept-option-disabled" id="concept-option-disabled-0" title="concept-option-disabled">disabled</a>, and, finally, that
499: <code><a href="#the-option-element" id="option-14">option</a></code> element's parent node is the <code><a href="#the-select-element" id="select-25">select</a></code>
500: element (and not an <code><a href="#the-optgroup-element" id="optgroup-4">optgroup</a></code> element), then that
501: <code><a href="#the-option-element" id="option-15">option</a></code> is the <code><a href="#the-select-element" id="select-26">select</a></code> element's
502: <dfn id="placeholder-label-option">placeholder label option</dfn>.</p><p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form-51">form</a></code> attribute is used to
503: explicitly associate the <code><a href="#the-select-element" id="select-27">select</a></code> element with its
504: <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>
505: attribute represents the element's name. The <code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled-15">disabled</a></code> attribute is used to make
1.9 mike 506: the control non-interactive and to prevent its value from being
1.156 mike 507: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus-4">autofocus</a></code>
508: attribute controls focus.</p><dl class="domintro"><dt><var title="">select</var> . <code title="dom-select-type"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-type" class="full-spec-link" title='Read about this "type" reference in the full HTML5 spec.'>type</a></code></dt>
1.9 mike 509:
510: <dd>
511:
512: <p>Returns "<code title="">select-multiple</code>" if the element
1.156 mike 513: has a <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple-33">multiple</a></code>
1.9 mike 514: attribute, and "<code title="">select-one</code>"
515: otherwise.</p>
516:
517: </dd>
518:
1.156 mike 519: <dt><var title="">select</var> . <code title="dom-select-options"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-options" class="full-spec-link" title='Read about this "options" reference in the full HTML5 spec.'>options</a></code></dt>
1.9 mike 520:
521: <dd>
522:
1.156 mike 523: <p>Returns an <code><a href="urls.html#htmloptionscollection" id="htmloptionscollection-4">HTMLOptionsCollection</a></code> of the <a href="#concept-select-option-list" id="concept-select-option-list-4" title="concept-select-option-list">list of options</a>.</p>
1.9 mike 524:
525: </dd>
526:
1.156 mike 527: <dt><var title="">select</var> . <code title="dom-select-length"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-length" class="full-spec-link" title='Read about this "length" reference in the full HTML5 spec.'>length</a></code> [ = <var title="">value</var> ]</dt>
1.9 mike 528: <dd>
1.156 mike 529: <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>
530: <p>When set to a smaller number, truncates the number of <code><a href="#the-option-element" id="option-16">option</a></code> elements in the <code><a href="#the-select-element" id="select-28">select</a></code>.</p>
531: <p>When set to a greater number, adds new blank <code><a href="#the-option-element" id="option-17">option</a></code> elements to the <code><a href="#the-select-element" id="select-29">select</a></code>.</p>
1.9 mike 532: </dd>
533:
1.156 mike 534: <dt><var title="">element</var> = <var title="">select</var> . <code title="dom-select-item"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-item" class="full-spec-link" title='Read about this "item" reference in the full HTML5 spec.'>item</a></code>(<var title="">index</var>)</dt>
1.9 mike 535: <dt><var title="">select</var>[<var title="">index</var>]</dt>
536: <dt><var title="">select</var>(<var title="">index</var>)</dt>
537: <dd>
1.156 mike 538: <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-6">tree order</a>.</p>
1.9 mike 539: <p>Returns null if <var title="">index</var> is out of range.</p>
540: </dd>
541:
1.156 mike 542: <dt><var title="">element</var> = <var title="">select</var> . <code title="dom-select-item"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-item" class="full-spec-link" title='Read about this "namedItem" reference in the full HTML5 spec.'>namedItem</a></code>(<var title="">name</var>)</dt>
1.9 mike 543: <dt><var title="">select</var>[<var title="">name</var>]</dt>
544: <dt><var title="">select</var>(<var title="">name</var>)</dt>
545: <dd>
1.156 mike 546: <p>Returns the item with ID 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>
547: <p>If there are multiple matching items, then a <code><a href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" class="full-spec-link" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a></code> object containing all those elements is returned.</p>
1.9 mike 548: <p>Returns null if no element with that ID could be found.</p>
549: </dd>
550:
1.156 mike 551: <dt><var title="">select</var> . <code title="dom-select-add"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-add" class="full-spec-link" 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 552: <dd>
553: <p>Inserts <var title="">element</var> before the node given by <var title="">before</var>.</p>
554: <p>The <var title="">before</var> argument can be a number, in
555: which case <var title="">element</var> is inserted before the item
1.156 mike 556: 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 557: which case <var title="">element</var> is inserted before that
558: element.</p>
559: <p>If <var title="">before</var> is omitted, null, or a number out
560: of range, then <var title="">element</var> will be added at the
561: end of the list.</p>
1.156 mike 562: <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 563: exception if <var title="">element</var> is an ancestor of the
1.156 mike 564: element into which it is to be inserted. If <var title="">element</var> is not an <code><a href="#the-option-element" id="option-18">option</a></code> or
565: <code><a href="#the-optgroup-element" id="optgroup-5">optgroup</a></code> element, then the method does nothing.</p>
1.9 mike 566: </dd>
567:
1.156 mike 568: <dt><var title="">select</var> . <code title="dom-select-selectedOptions"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-selectedoptions" class="full-spec-link" title='Read about this "selectedOptions" reference in the full HTML5 spec.'>selectedOptions</a></code></dt>
1.9 mike 569:
570: <dd>
571:
1.156 mike 572: <p>Returns an <code><a href="urls.html#htmlcollection" id="htmlcollection-36">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 573: selected.</p>
574:
575: </dd>
576:
1.156 mike 577: <dt><var title="">select</var> . <code title="dom-select-selectedIndex"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-selectedindex" class="full-spec-link" title='Read about this "selectedIndex" reference in the full HTML5 spec.'>selectedIndex</a></code> [ = <var title="">value</var> ]</dt>
1.9 mike 578:
579: <dd>
580:
581: <p>Returns the index of the first selected item, if any, or
1.156 mike 582: −1 if there is no selected item.</p>
1.9 mike 583:
584: <p>Can be set, to change the selection.</p>
585:
586: </dd>
587:
1.156 mike 588: <dt><var title="">select</var> . <code title="dom-select-value"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-value" class="full-spec-link" title='Read about this "value" reference in the full HTML5 spec.'>value</a></code> [ = <var title="">value</var> ]</dt>
1.9 mike 589:
590: <dd>
591:
1.156 mike 592: <p>Returns the <a 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.' class="full-spec-link">value</a> of the
1.9 mike 593: first selected item, if any, or the empty string if there is no
594: selected item.</p>
595:
596: <p>Can be set, to change the selection.</p>
597:
598: </dd>
599:
600: </dl><div class="example">
601:
1.156 mike 602: <p>The following example shows how a <code><a href="#the-select-element" id="select-30">select</a></code> element
1.9 mike 603: can be used to offer the user with a set of options from which the
604: user can select a single option. The default option is
605: preselected.</p>
606:
607: <pre><p>
608: <label for="unittype">Select unit type:</label>
609: <select id="unittype" name="unittype">
610: <option value="1"> Miner </option>
611: <option value="2"> Puffer </option>
612: <option value="3" selected> Snipey </option>
613: <option value="4"> Max </option>
614: <option value="5"> Firebot </option>
615: </select>
616: </p></pre>
617:
618: </div><div class="example">
619:
620: <p>Here, the user is offered a set of options from which he can
621: select any number. By default, all five options are selected.</p>
622:
623: <pre><p>
624: <label for="allowedunits">Select unit types to enable on this map:</label>
625: <select id="allowedunits" name="allowedunits" multiple>
626: <option value="1" selected> Miner </option>
627: <option value="2" selected> Puffer </option>
628: <option value="3" selected> Snipey </option>
629: <option value="4" selected> Max </option>
630: <option value="5" selected> Firebot </option>
631: </select>
632: </p></pre>
633:
1.156 mike 634: </div><h4 id="the-datalist-element"><span class="secno">4.10.10 </span>The <dfn><code>datalist</code></dfn> element</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><dl class="element"><dt>Categories</dt>
635: <dd><a href="content-models.html#flow-content" id="flow-content-116">Flow content</a>.</dd>
636: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-123">Phrasing content</a>.</dd>
1.9 mike 637: <dt>Contexts in which this element may be used:</dt>
1.156 mike 638: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content-124">phrasing content</a> is expected.</dd>
1.9 mike 639: <dt>Content model:</dt>
1.156 mike 640: <dd>Either: <a href="content-models.html#phrasing-content" id="phrasing-content-125">phrasing content</a>.</dd>
641: <dd>Or: Zero or more <code><a href="#the-option-element" id="option-19">option</a></code> elements.</dd>
1.9 mike 642: <dt>Content attributes:</dt>
1.156 mike 643: <dd><a href="elements.html#global-attributes" id="global-attributes-87">Global attributes</a></dd>
1.9 mike 644: <dt>DOM interface:</dt>
645: <dd>
1.156 mike 646: <pre class="idl">interface <dfn id="htmldatalistelement">HTMLDataListElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-98">HTMLElement</a> {
647: readonly attribute <a href="urls.html#htmlcollection" id="htmlcollection-37">HTMLCollection</a> <a 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.' class="full-spec-link">options</a>;
1.9 mike 648: };</pre>
649: </dd>
1.156 mike 650: </dl><p>The <code><a href="#the-datalist-element" id="datalist-13">datalist</a></code> element represents a set of
651: <code><a href="#the-option-element" id="option-20">option</a></code> elements that represent predefined options for
1.9 mike 652: other controls. The contents of the element represents fallback
1.156 mike 653: content for legacy user agents, intermixed with <code><a href="#the-option-element" id="option-21">option</a></code>
1.9 mike 654: elements that represent the predefined options. In the rendering,
1.156 mike 655: the <code><a href="#the-datalist-element" id="datalist-14">datalist</a></code> element <a href="http://dev.w3.org/html5/spec/rendering.html#represents" class="full-spec-link" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a>
656: nothing.</p><p>The <code><a href="#the-datalist-element" id="datalist-15">datalist</a></code> element is hooked up to an
657: <code><a href="the-input-element.html#the-input-element" id="input-114">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
658: <code><a href="the-input-element.html#the-input-element" id="input-115">input</a></code> element. <!-- v2DATAGRID The
1.9 mike 659: <code>datalist</code> element can also be used with a
660: <code>datagrid</code> element, as the source of autocompletion hints
661: for <code title="datagrid-type-editable">editable</code>
1.156 mike 662: cells. --></p><p>Each <code><a href="#the-option-element" id="option-22">option</a></code> element that is a descendant of the
663: <code><a href="#the-datalist-element" id="datalist-16">datalist</a></code> element, that is not <a href="#concept-option-disabled" id="concept-option-disabled-1" title="concept-option-disabled">disabled</a>, and whose <a href="#concept-option-value" id="concept-option-value-1" title="concept-option-value">value</a> is a string that isn't the
664: 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 665:
1.156 mike 666: </p><dl class="domintro"><dt><var title="">datalist</var> . <code title="dom-datalist-options"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-datalist-options" class="full-spec-link" title='Read about this "options" reference in the full HTML5 spec.'>options</a></code></dt>
1.9 mike 667:
668: <dd>
1.156 mike 669: <p>Returns an <code><a href="urls.html#htmlcollection" id="htmlcollection-38">HTMLCollection</a></code> of the <code>options</code> elements of the table.</p>
1.9 mike 670: </dd>
671:
1.156 mike 672: </dl><h4 id="the-optgroup-element"><span class="secno">4.10.11 </span>The <dfn><code>optgroup</code></dfn> element</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><dl class="element"><dt>Categories</dt>
1.9 mike 673: <dd>None.</dd>
674: <dt>Contexts in which this element may be used:</dt>
1.156 mike 675: <dd>As a child of a <code><a href="#the-select-element" id="select-31">select</a></code> element.</dd>
1.9 mike 676: <dt>Content model:</dt>
1.156 mike 677: <dd>Zero or more <code><a href="#the-option-element" id="option-23">option</a></code> elements.</dd>
1.9 mike 678: <dt>Content attributes:</dt>
1.156 mike 679: <dd><a href="elements.html#global-attributes" id="global-attributes-88">Global attributes</a></dd>
680: <dd><code title="attr-optgroup-disabled"><a href="#attr-optgroup-disabled" id="disabled-3">disabled</a></code></dd>
681: <dd><code title="attr-optgroup-label"><a href="#attr-optgroup-label" id="label-25">label</a></code></dd>
1.9 mike 682: <dt>DOM interface:</dt>
683: <dd>
1.156 mike 684: <pre class="idl">interface <dfn id="htmloptgroupelement">HTMLOptGroupElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-99">HTMLElement</a> {
685: attribute boolean <a 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.' class="full-spec-link">disabled</a>;
686: attribute DOMString <a 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.' class="full-spec-link">label</a>;
1.9 mike 687: };</pre>
688: </dd>
1.156 mike 689: </dl><!-- v2: make optgroups selectable if they have a value. --><p>The <code><a href="#the-optgroup-element" id="optgroup-6">optgroup</a></code> element <a href="http://dev.w3.org/html5/spec/rendering.html#represents" class="full-spec-link" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a group of
690: <code><a href="#the-option-element" id="option-24">option</a></code> elements with a common label.</p><p>The element's group of <code><a href="#the-option-element" id="option-25">option</a></code> elements consists of
691: the <code><a href="#the-option-element" id="option-26">option</a></code> elements that are children of the
692: <code><a href="#the-optgroup-element" id="optgroup-7">optgroup</a></code> element.</p><p>The <dfn id="attr-optgroup-disabled" title="attr-optgroup-disabled"><code>disabled</code></dfn> attribute
693: is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute-15">boolean attribute</a> and can be used to <a href="#concept-option-disabled" id="concept-option-disabled-2" title="concept-option-disabled">disable</a> a group of
694: <code><a href="#the-option-element" id="option-27">option</a></code> elements together.</p><p>The <dfn id="attr-optgroup-label" title="attr-optgroup-label"><code>label</code></dfn>
1.9 mike 695: attribute must be specified. Its value gives the name of the group,
1.156 mike 696: for the purposes of the user interface. </p><div class="example">
1.9 mike 697:
698: <p>The following snippet shows how a set of lessons from three
1.156 mike 699: courses could be offered in a <code><a href="#the-select-element" id="select-32">select</a></code> drop-down
1.9 mike 700: widget:</p>
701:
702: <pre><form action="courseselector.dll" method="get">
703: <p>Which course would you like to watch today?
704: <p><label>Course:
705: <select name="c">
706: <optgroup label="8.01 Physics I: Classical Mechanics">
707: <option value="8.01.1">Lecture 01: Powers of Ten
708: <option value="8.01.2">Lecture 02: 1D Kinematics
709: <option value="8.01.3">Lecture 03: Vectors
710: <optgroup label="8.02 Electricity and Magnestism">
711: <option value="8.02.1">Lecture 01: What holds our world together?
712: <option value="8.02.2">Lecture 02: Electric Field
713: <option value="8.02.3">Lecture 03: Electric Flux
714: <optgroup label="8.03 Physics III: Vibrations and Waves">
715: <option value="8.03.1">Lecture 01: Periodic Phenomenon
716: <option value="8.03.2">Lecture 02: Beats
717: <option value="8.03.3">Lecture 03: Forced Oscillations with Damping
718: </select>
719: </label>
1.55 mike 720: <p><input type=submit value="▶ Play">
1.9 mike 721: </form></pre>
722:
1.156 mike 723: </div><h4 id="the-option-element"><span class="secno">4.10.12 </span>The <dfn><code>option</code></dfn> element</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><dl class="element"><dt>Categories</dt>
1.9 mike 724: <dd>None.</dd>
725: <dt>Contexts in which this element may be used:</dt>
1.156 mike 726: <dd>As a child of a <code><a href="#the-select-element" id="select-33">select</a></code> element.</dd>
727: <dd>As a child of a <code><a href="#the-datalist-element" id="datalist-17">datalist</a></code> element.</dd>
728: <dd>As a child of an <code><a href="#the-optgroup-element" id="optgroup-8">optgroup</a></code> element.</dd>
1.9 mike 729: <dt>Content model:</dt>
1.156 mike 730: <dd><a href="content-models.html#text-content" id="text-content-4" title="text content">Text</a>.</dd>
1.9 mike 731: <dt>Content attributes:</dt>
1.156 mike 732: <dd><a href="elements.html#global-attributes" id="global-attributes-89">Global attributes</a></dd>
733: <dd><code title="attr-option-disabled"><a href="#attr-option-disabled" id="disabled-6">disabled</a></code></dd>
734: <dd><code title="attr-option-label"><a href="#attr-option-label" id="label-27">label</a></code></dd>
735: <dd><code title="attr-option-selected"><a href="#attr-option-selected" id="selected-0">selected</a></code></dd>
736: <dd><code title="attr-option-value"><a href="#attr-option-value" id="value-33">value</a></code></dd>
1.9 mike 737: <dt>DOM interface:</dt>
738: <dd>
1.156 mike 739: <pre class="idl">[NamedConstructor=<a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option" title='Read about this "Option" reference in the full HTML5 spec.' class="full-spec-link">Option</a>(),
740: NamedConstructor=<a 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.' class="full-spec-link">Option</a>(in DOMString text),
741: NamedConstructor=<a 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.' class="full-spec-link">Option</a>(in DOMString text, in DOMString value),
742: NamedConstructor=<a 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.' class="full-spec-link">Option</a>(in DOMString text, in DOMString value, in boolean defaultSelected),
743: NamedConstructor=<a 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.' class="full-spec-link">Option</a>(in DOMString text, in DOMString value, in boolean defaultSelected, in boolean selected)]
744: interface <dfn id="htmloptionelement">HTMLOptionElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-100">HTMLElement</a> {
745: attribute boolean <a 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.' class="full-spec-link">disabled</a>;
746: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement-7">HTMLFormElement</a> <a 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.' class="full-spec-link">form</a>;
747: attribute DOMString <a 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.' class="full-spec-link">label</a>;
748: attribute boolean <a 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.' class="full-spec-link">defaultSelected</a>;
749: attribute boolean <a 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.' class="full-spec-link">selected</a>;
750: attribute DOMString <a 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.' class="full-spec-link">value</a>;
1.9 mike 751:
1.156 mike 752: attribute DOMString <a 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.' class="full-spec-link">text</a>;
753: readonly attribute long <a 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.' class="full-spec-link">index</a>;
1.9 mike 754: };</pre>
755: </dd>
1.156 mike 756: </dl><p>The <code><a href="#the-option-element" id="option-28">option</a></code> element <a href="http://dev.w3.org/html5/spec/rendering.html#represents" class="full-spec-link" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> an option
757: in a <code><a href="#the-select-element" id="select-34">select</a></code> element or as part of a list of suggestions
758: in a <code><a href="#the-datalist-element" id="datalist-18">datalist</a></code> element.</p><p>In certain circumstances described in the definition of the
759: <code><a href="#the-select-element" id="select-35">select</a></code> element, an <code><a href="#the-option-element" id="option-29">option</a></code> element can be a
760: <code><a href="#the-select-element" id="select-36">select</a></code> element's <a href="#placeholder-label-option" id="placeholder-label-option-0">placeholder label option</a>.
761: A <a href="#placeholder-label-option" id="placeholder-label-option-1">placeholder label option</a> does not represent an actual
762: option, but instead represents a label for the <code><a href="#the-select-element" id="select-37">select</a></code>
763: control.</p><p>The <dfn id="attr-option-disabled" title="attr-option-disabled"><code>disabled</code></dfn>
764: attribute is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute-16">boolean attribute</a>. An
765: <code><a href="#the-option-element" id="option-30">option</a></code> element is <dfn id="concept-option-disabled" title="concept-option-disabled">disabled</dfn> if its <code title="attr-option-disabled"><a href="#attr-option-disabled" id="disabled-7">disabled</a></code> attribute is present or
766: if it is a child of an <code><a href="#the-optgroup-element" id="optgroup-9">optgroup</a></code> element whose <code title="attr-optgroup-disabled"><a href="#attr-optgroup-disabled" id="disabled-4">disabled</a></code> attribute is
767: present.</p><p>The <dfn id="attr-option-label" title="attr-option-label"><code>label</code></dfn>
768: attribute provides a label for element. The <dfn id="concept-option-label" title="concept-option-label">label</dfn> of an <code><a href="#the-option-element" id="option-31">option</a></code>
769: element is the value of the <code title="attr-option-label"><a href="#attr-option-label" id="label-28">label</a></code> attribute, if there is one,
770: or the <code><a href="http://dev.w3.org/html5/spec/infrastructure.html#textcontent" class="full-spec-link" title='Read about this "textContent" reference in the full HTML5 spec.'>textContent</a></code> of the element, if there isn't.</p><p>The <dfn id="attr-option-value" title="attr-option-value"><code>value</code></dfn>
771: attribute provides a value for element. The <dfn id="concept-option-value" title="concept-option-value">value</dfn> of an <code><a href="#the-option-element" id="option-32">option</a></code>
772: element is the value of the <code title="attr-option-value"><a href="#attr-option-value" id="value-34">value</a></code> attribute, if there is one,
773: or the <code><a href="http://dev.w3.org/html5/spec/infrastructure.html#textcontent" class="full-spec-link" title='Read about this "textContent" reference in the full HTML5 spec.'>textContent</a></code> of the element, if there isn't.</p><p>The <dfn id="attr-option-selected" title="attr-option-selected"><code>selected</code></dfn>
774: attribute represents the default <a 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.' class="full-spec-link">selectedness</a> of the
775: element.</p><p>A <code><a href="#the-select-element" id="select-38">select</a></code> element whose <code title="attr-select-multiple"><a href="#attr-select-multiple" id="multiple-34">multiple</a></code> attribute is not
776: specified must not have more than one descendant <code><a href="#the-option-element" id="option-33">option</a></code>
777: element with its <code title="attr-option-selected"><a href="#attr-option-selected" id="selected-1">selected</a></code>
778: attribute set.</p><dl class="domintro"><dt><var title="">option</var> . <code title="dom-option-selected"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-selected" class="full-spec-link" title='Read about this "selected" reference in the full HTML5 spec.'>selected</a></code></dt>
1.9 mike 779:
780: <dd>
781:
782: <p>Returns true if the element is selected, and false otherwise.</p>
783:
784: </dd>
785:
1.156 mike 786: <dt><var title="">option</var> . <code title="dom-option-index"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-index" class="full-spec-link" title='Read about this "index" reference in the full HTML5 spec.'>index</a></code></dt>
1.9 mike 787:
788: <dd>
789:
1.156 mike 790: <p>Returns the index of the element in its <code><a href="#the-select-element" id="select-39">select</a></code>
791: element's <code title="dom-select-options"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-select-options" class="full-spec-link" title='Read about this "options" reference in the full HTML5 spec.'>options</a></code>
1.9 mike 792: list.</p>
793:
794: </dd>
795:
1.156 mike 796: <dt><var title="">option</var> . <code title="dom-option-form"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-form" class="full-spec-link" title='Read about this "form" reference in the full HTML5 spec.'>form</a></code></dt>
1.9 mike 797:
798: <dd>
799:
1.156 mike 800: <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 801: null otherwise.</p>
802:
803: </dd>
804:
1.156 mike 805: <dt><var title="">option</var> . <code title="dom-option-text"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option-text" class="full-spec-link" title='Read about this "text" reference in the full HTML5 spec.'>text</a></code></dt>
1.11 mike 806:
807: <dd>
808:
1.156 mike 809: <p>Same as <code><a href="http://dev.w3.org/html5/spec/infrastructure.html#textcontent" class="full-spec-link" title='Read about this "textContent" reference in the full HTML5 spec.'>textContent</a></code>.</p>
1.11 mike 810:
811: </dd>
812:
1.156 mike 813: <dt><var title="">option</var> = new <code title="dom-option"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-option" class="full-spec-link" 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 814:
815: <dd>
816:
1.156 mike 817: <p>Returns a new <code><a href="#the-option-element" id="option-34">option</a></code> element.</p>
1.9 mike 818:
819: <p>The <var title="">text</var> argument sets the contents of the element.</p>
1.156 mike 820: <p>The <var title="">value</var> argument sets the <code title="attr-option-value"><a href="#attr-option-value" id="value-35">value</a></code> attribute.</p>
821: <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 822: <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>
823:
824: </dd>
825:
1.156 mike 826: </dl><h4 id="the-textarea-element"><span class="secno">4.10.13 </span>The <dfn><code>textarea</code></dfn> element</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><dl class="element"><dt>Categories</dt>
827: <dd><a href="content-models.html#flow-content" id="flow-content-117">Flow content</a>.</dd>
828: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-126">Phrasing content</a>.</dd>
829: <dd><a href="content-models.html#interactive-content" id="interactive-content-17">Interactive content</a>.</dd>
830: <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-5" 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>
1.9 mike 831: <dt>Contexts in which this element may be used:</dt>
1.156 mike 832: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content-127">phrasing content</a> is expected.</dd>
1.9 mike 833: <dt>Content model:</dt>
1.156 mike 834: <dd><a href="content-models.html#text-content" id="text-content-5" title="text content">Text</a>.</dd>
1.9 mike 835: <dt>Content attributes:</dt>
1.156 mike 836: <dd><a href="elements.html#global-attributes" id="global-attributes-90">Global attributes</a></dd>
837: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus-5">autofocus</a></code></dd>
838: <dd><code title="attr-textarea-cols"><a href="#attr-textarea-cols" id="cols">cols</a></code></dd>
839: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled-16">disabled</a></code></dd>
840: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form-52">form</a></code></dd>
841: <dd><code title="attr-textarea-maxlength"><a href="#attr-textarea-maxlength" id="maxlength-27">maxlength</a></code></dd>
842: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name-41">name</a></code></dd>
843: <dd><code title="attr-textarea-placeholder"><a href="#attr-textarea-placeholder" id="placeholder-28">placeholder</a></code></dd>
844: <dd><code title="attr-textarea-readonly"><a href="#attr-textarea-readonly" id="readonly-41">readonly</a></code></dd>
845: <dd><code title="attr-textarea-required"><a href="#attr-textarea-required" id="required-30">required</a></code></dd>
846: <dd><code title="attr-textarea-rows"><a href="#attr-textarea-rows" id="rows">rows</a></code></dd>
847: <dd><code title="attr-textarea-wrap"><a href="#attr-textarea-wrap" id="wrap">wrap</a></code></dd>
1.9 mike 848: <dt>DOM interface:</dt>
849: <dd>
1.156 mike 850: <pre class="idl">interface <dfn id="htmltextareaelement">HTMLTextAreaElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-101">HTMLElement</a> {
851: attribute boolean <a 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.' class="full-spec-link">autofocus</a>;
852: attribute unsigned long <a 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.' class="full-spec-link">cols</a>;
853: attribute boolean <a 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.' class="full-spec-link">disabled</a>;
854: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement-8">HTMLFormElement</a> <a 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.' class="full-spec-link">form</a>;
855: attribute long <a 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.' class="full-spec-link">maxLength</a>;
856: attribute DOMString <a 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.' class="full-spec-link">name</a>;
857: attribute DOMString <a 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.' class="full-spec-link">placeholder</a>;
858: attribute boolean <a 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.' class="full-spec-link">readOnly</a>;
859: attribute boolean <a 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.' class="full-spec-link">required</a>;
860: attribute unsigned long <a 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.' class="full-spec-link">rows</a>;
861: attribute DOMString <a 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.' class="full-spec-link">wrap</a>;
862:
863: readonly attribute DOMString <a 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.' class="full-spec-link">type</a>;
864: attribute DOMString <a 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.' class="full-spec-link">defaultValue</a>;
865: attribute DOMString <a 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.' class="full-spec-link">value</a>;
866: readonly attribute unsigned long <a 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.' class="full-spec-link">textLength</a>;
867:
868: readonly attribute boolean <a 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.' class="full-spec-link">willValidate</a>;
869: readonly attribute <a href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#validitystate" class="full-spec-link" title='Read about this "ValidityState" reference in the full HTML5 spec.'>ValidityState</a> <a 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.' class="full-spec-link">validity</a>;
870: readonly attribute DOMString <a 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.' class="full-spec-link">validationMessage</a>;
871: boolean <a 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.' class="full-spec-link">checkValidity</a>();
872: void <a 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.' class="full-spec-link">setCustomValidity</a>(in DOMString error);
873:
874: readonly attribute <a href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" class="full-spec-link" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a> <a href="http://dev.w3.org/html5/spec/forms.html#dom-lfe-labels" title='Read about this "labels" reference in the full HTML5 spec.' class="full-spec-link">labels</a>;
875:
876: void <a href="http://dev.w3.org/html5/spec/editing.html#dom-textarea-input-select" title='Read about this "select" reference in the full HTML5 spec.' class="full-spec-link">select</a>();
877: attribute unsigned long <a href="http://dev.w3.org/html5/spec/editing.html#dom-textarea-input-selectionstart" title='Read about this "selectionStart" reference in the full HTML5 spec.' class="full-spec-link">selectionStart</a>;
878: attribute unsigned long <a href="http://dev.w3.org/html5/spec/editing.html#dom-textarea-input-selectionend" title='Read about this "selectionEnd" reference in the full HTML5 spec.' class="full-spec-link">selectionEnd</a>;
879: void <a href="http://dev.w3.org/html5/spec/editing.html#dom-textarea-input-setselectionrange" title='Read about this "setSelectionRange" reference in the full HTML5 spec.' class="full-spec-link">setSelectionRange</a>(in unsigned long start, in unsigned long end);
1.9 mike 880: };</pre>
881: </dd>
1.156 mike 882: </dl><p>The <code><a href="#the-textarea-element" id="textarea-21">textarea</a></code> element <a href="http://dev.w3.org/html5/spec/rendering.html#represents" class="full-spec-link" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a
1.9 mike 883: multiline plain text edit control. The contents of the control represent the
1.156 mike 884: control's default value.</p><p>The <dfn id="attr-textarea-readonly" title="attr-textarea-readonly"><code>readonly</code></dfn> attribute
885: is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute-17">boolean attribute</a> used to control whether the text
886: can be edited by the user or not.</p><p>The <dfn id="attr-textarea-cols" title="attr-textarea-cols"><code>cols</code></dfn>
1.9 mike 887: attribute specifies the expected maximum number of characters per
1.156 mike 888: line. If the <code title="attr-textarea-cols"><a href="#attr-textarea-cols" id="cols-0">cols</a></code> attribute
889: 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
890: integer</a> greater than zero. </p><p>The <dfn id="attr-textarea-rows" title="attr-textarea-rows"><code>rows</code></dfn>
891: 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
892: 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
893: zero. </p><p>The <dfn id="attr-textarea-wrap" title="attr-textarea-wrap"><code>wrap</code></dfn>
894: attribute is an <a href="common-microsyntaxes.html#enumerated-attribute" id="enumerated-attribute-9">enumerated attribute</a> with two keywords
1.9 mike 895: and states: the <dfn id="attr-textarea-wrap-soft" title="attr-textarea-wrap-soft"><code>soft</code></dfn> keyword
896: which maps to the <dfn id="attr-textarea-wrap-soft-state" title="attr-textarea-wrap-soft-state">Soft</dfn> state, and the
897: <dfn id="attr-textarea-wrap-hard" title="attr-textarea-wrap-hard"><code>hard</code></dfn> keyword
898: which maps to the <dfn id="attr-textarea-wrap-hard-state" title="attr-textarea-wrap-hard-state">Hard</dfn> state. The
1.156 mike 899: <i>missing value default</i> is the <a href="#attr-textarea-wrap-soft-state" id="attr-textarea-wrap-soft-state-0" title="attr-textarea-wrap-soft-state">Soft</a> state.</p><p>If the element's <code title="attr-textarea-wrap"><a href="#attr-textarea-wrap" id="wrap-0">wrap</a></code>
900: attribute is in 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 <code title="attr-textarea-cols"><a href="#attr-textarea-cols" id="cols-1">cols</a></code> attribute must be
1.9 mike 901: specified.</p><!-- attr-textarea-wrap-off (attr-textarea-wrap-off-state): not
902: conforming; turns off the rendering of wrapping but otherwise acts
903: like 'soft' --><p>The <dfn id="attr-textarea-maxlength" title="attr-textarea-maxlength"><code>maxlength</code></dfn>
1.156 mike 904: 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
905: <code><a href="#the-textarea-element" id="textarea-22">textarea</a></code> element's <a 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.' class="full-spec-link">dirty value flag</a>.</p><p>If the <code><a href="#the-textarea-element" id="textarea-23">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 906: value length</a>, then the element's children must be such that
1.156 mike 907: the <a href="http://dev.w3.org/html5/spec/common-microsyntaxes.html#code-point-length" class="full-spec-link" title='Read about this "code-point length" reference in the full HTML5 spec.'>code-point length</a> of the value of the element's
908: <code><a href="http://dev.w3.org/html5/spec/infrastructure.html#textcontent" class="full-spec-link" title='Read about this "textContent" reference in the full HTML5 spec.'>textContent</a></code> IDL attribute is equal to or less than the
909: 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><p>The <dfn id="attr-textarea-required" title="attr-textarea-required"><code>required</code></dfn> attribute
910: is a <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute-18">boolean attribute</a>. When specified, the user will
1.9 mike 911: be required to enter a value before submitting the form.</p><!-- similar text in the <input> section --><p>The <dfn id="attr-textarea-placeholder" title="attr-textarea-placeholder"><code>placeholder</code></dfn>
912: attribute represents a hint (a word or short phrase) intended to aid
913: the user with data entry. A hint could be a sample value or a brief
914: description of the expected format. The attribute, if specified,
915: must have a value that contains no U+000A LINE FEED (LF) or U+000D
1.156 mike 916: CARRIAGE RETURN (CR) characters.</p><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><p>The <code title="attr-textarea-placeholder"><a href="#attr-textarea-placeholder" id="placeholder-29">placeholder</a></code>
1.9 mike 917: attribute should not be used as an alternative to a
1.156 mike 918: <code><a href="forms.html#the-label-element" id="label-15">label</a></code>.</p><p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form-53">form</a></code> attribute is used to
919: explicitly associate the <code><a href="#the-textarea-element" id="textarea-24">textarea</a></code> element with its
920: <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>
921: attribute represents the element's name. The <code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled-17">disabled</a></code> attribute is used to make
1.9 mike 922: the control non-interactive and to prevent its value from being
1.156 mike 923: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus-6">autofocus</a></code>
924: attribute controls focus.</p><dl class="domintro"><dt><var title="">textarea</var> . <code title="attr-textarea-type">type</code></dt>
1.9 mike 925:
926: <dd>
927:
928: <p>Returns the string "<code title="">textarea</code>".</p>
929:
930: </dd>
931:
932: <dt><var title="">textarea</var> . <code title="attr-textarea-value">value</code></dt>
933:
934: <dd>
935:
936: <p>Returns the current value of the element.</p>
937:
938: <p>Can be set, to change the value.</p>
939:
940: </dd>
941:
942: </dl><div class="example">
943:
1.156 mike 944: <p>Here is an example of a <code><a href="#the-textarea-element" id="textarea-25">textarea</a></code> being used for
1.9 mike 945: unrestricted free-form text input in a form:</p>
946:
947: <pre><p>If you have any comments, please let us know: <textarea cols=80 name=comments></textarea></p></pre>
948:
1.156 mike 949: </div><h4 id="the-keygen-element"><span class="secno">4.10.14 </span>The <dfn><code>keygen</code></dfn> element</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><dl class="element"><dt>Categories</dt>
950: <dd><a href="content-models.html#flow-content" id="flow-content-118">Flow content</a>.</dd>
951: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-128">Phrasing content</a>.</dd>
952: <dd><a href="content-models.html#interactive-content" id="interactive-content-18">Interactive content</a>.</dd>
953: <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-6" 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>
1.9 mike 954: <dt>Contexts in which this element may be used:</dt>
1.156 mike 955: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content-129">phrasing content</a> is expected.</dd>
1.9 mike 956: <dt>Content model:</dt>
957: <dd>Empty.</dd>
958: <dt>Content attributes:</dt>
1.156 mike 959: <dd><a href="elements.html#global-attributes" id="global-attributes-91">Global attributes</a></dd>
960: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus-7">autofocus</a></code></dd>
961: <dd><code title="attr-keygen-challenge"><a href="#attr-keygen-challenge" id="challenge">challenge</a></code></dd>
962: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled-18">disabled</a></code></dd>
963: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form-54">form</a></code></dd>
964: <dd><code title="attr-keygen-keytype"><a href="#attr-keygen-keytype" id="keytype">keytype</a></code></dd>
965: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name-43">name</a></code></dd>
1.9 mike 966: <dt>DOM interface:</dt>
967: <dd>
1.156 mike 968: <pre class="idl">interface <dfn id="htmlkeygenelement">HTMLKeygenElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-102">HTMLElement</a> {
969: attribute boolean <a 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.' class="full-spec-link">autofocus</a>;
970: attribute DOMString <a 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.' class="full-spec-link">challenge</a>;
971: attribute boolean <a 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.' class="full-spec-link">disabled</a>;
972: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement-9">HTMLFormElement</a> <a 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.' class="full-spec-link">form</a>;
973: attribute DOMString <a 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.' class="full-spec-link">keytype</a>;
974: attribute DOMString <a 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.' class="full-spec-link">name</a>;
975:
976: readonly attribute DOMString <a 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.' class="full-spec-link">type</a>;
977:
978: readonly attribute boolean <a 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.' class="full-spec-link">willValidate</a>;
979: readonly attribute <a href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#validitystate" class="full-spec-link" title='Read about this "ValidityState" reference in the full HTML5 spec.'>ValidityState</a> <a 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.' class="full-spec-link">validity</a>;
980: readonly attribute DOMString <a 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.' class="full-spec-link">validationMessage</a>;
981: boolean <a 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.' class="full-spec-link">checkValidity</a>();
982: void <a 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.' class="full-spec-link">setCustomValidity</a>(in DOMString error);
1.9 mike 983:
1.156 mike 984: readonly attribute <a href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" class="full-spec-link" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a> <a href="http://dev.w3.org/html5/spec/forms.html#dom-lfe-labels" title='Read about this "labels" reference in the full HTML5 spec.' class="full-spec-link">labels</a>;
1.9 mike 985: };</pre>
986: </dd>
1.156 mike 987: </dl><p>The <code><a href="#the-keygen-element" id="keygen-11">keygen</a></code> element <a href="http://dev.w3.org/html5/spec/rendering.html#represents" class="full-spec-link" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a key
1.9 mike 988: pair generator control. When the control's form is submitted, the
989: private key is stored in the local keystore, and the public key is
1.156 mike 990: packaged and sent to the server.</p><p>The <dfn id="attr-keygen-challenge" title="attr-keygen-challenge"><code>challenge</code></dfn> attribute
1.9 mike 991: may be specified. Its value will be packaged with the submitted
1.156 mike 992: key.</p><p>The <dfn id="attr-keygen-keytype" title="attr-keygen-keytype"><code>keytype</code></dfn>
993: attribute is an <a href="common-microsyntaxes.html#enumerated-attribute" id="enumerated-attribute-10">enumerated attribute</a>. The following
994: table lists the keywords and states for the attribute — the
1.9 mike 995: keywords in the left column map to the states listed in the cell in
996: the second column on the same row as the keyword. User agents are
1.26 mike 997: not required to support these values, and must only recognize values
1.156 mike 998: whose corresponding algorithms they support.</p><table><thead><tr><th> Keyword </th><th> State
999: </th></tr></thead><tbody><tr><td> <code title="">rsa</code>
1000: </td><td> <i title="">RSA</i>
1.9 mike 1001: <!-- v2 (see below)
1002: <tr>
1003: <td> <code title="">ec</code>
1004: <td> <i title="">EC</i>
1005: -->
1.156 mike 1006: </td></tr></tbody></table><p>The <i>invalid value default</i> state is the <i title="">unknown</i> state. The <i>missing value default</i> state
1007: is the <i title="">RSA</i> state, if it is supported, or the <i title="">unknown</i> state otherwise.</p><p class="note">This specification does not specify what key types
1008: user agents are to support — it is possible for a user agent
1009: to not support any key types at all.</p><p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form-55">form</a></code> attribute is used to
1010: explicitly associate the <code><a href="#the-keygen-element" id="keygen-12">keygen</a></code> element with its
1011: <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>
1012: attribute represents the element's name. The <code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled" id="disabled-19">disabled</a></code> attribute is used to make
1.9 mike 1013: the control non-interactive and to prevent its value from being
1.156 mike 1014: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus" id="autofocus-8">autofocus</a></code>
1015: attribute controls focus.</p><dl class="domintro"><dt><var title="">keygen</var> . <code title="attr-keygen-type">type</code></dt>
1.9 mike 1016:
1017: <dd>
1018:
1019: <p>Returns the string "<code title="">keygen</code>".</p>
1020:
1021: </dd>
1022:
1023: </dl><p class="note">This specification does not specify how the private
1024: key generated is to be used. It is expected that after receiving the
1.156 mike 1025: <code><a href="http://dev.w3.org/html5/spec/the-button-element.html#signedpublickeyandchallenge" class="full-spec-link" title='Read about this "SignedPublicKeyAndChallenge" reference in the full HTML5 spec.'>SignedPublicKeyAndChallenge</a></code> (SPKAC) structure, the
1.9 mike 1026: server will generate a client certificate and offer it back to the
1027: user for download; this certificate, once downloaded and stored in
1028: the key store along with the private key, can then be used to
1.88 mike 1029: authenticate to services that use TLS and certificate
1.9 mike 1030: authentication.</p><!-- how does the UA know which private key is associated with a
1031: certificate it gets back after the server has taken the public key
1032: created by <keygen> and turned it into a client cert? --><div class="example">
1033:
1034: <p>To generate a key pair, add the private key to the user's key
1035: store, and submit the public key to the server, markup such as the
1036: following can be used:</p>
1037:
1.22 mike 1038: <pre><form action="processkey.cgi" method="post" enctype="multipart/form-data">
1.9 mike 1039: <p><keygen name="key"></p>
1040: <p><input type=submit value="Submit key..."></p>
1041: </form></pre>
1042:
1043: <p>The server will then receive a form submission with a packaged
1044: RSA public key as the value of "<code title="">key</code>". This
1045: can then be used for various purposes, such as generating a client
1046: certificate, as mentioned above.</p>
1047:
1.156 mike 1048: </div><h4 id="the-output-element"><span class="secno">4.10.15 </span>The <dfn><code>output</code></dfn> element</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><dl class="element"><dt>Categories</dt>
1049: <dd><a href="content-models.html#flow-content" id="flow-content-119">Flow content</a>.</dd>
1050: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-130">Phrasing content</a>.</dd>
1051: <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-7" title="category-label">labelable</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>
1.9 mike 1052: <dt>Contexts in which this element may be used:</dt>
1.156 mike 1053: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content-131">phrasing content</a> is expected.</dd>
1.9 mike 1054: <dt>Content model:</dt>
1.156 mike 1055: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-132">Phrasing content</a>.</dd>
1.9 mike 1056: <dt>Content attributes:</dt>
1.156 mike 1057: <dd><a href="elements.html#global-attributes" id="global-attributes-92">Global attributes</a></dd>
1058: <dd><code title="attr-output-for"><a href="#attr-output-for" id="for-2">for</a></code></dd>
1059: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form-56">form</a></code></dd>
1060: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name" id="name-45">name</a></code></dd>
1.9 mike 1061: <dt>DOM interface:</dt>
1062: <dd>
1.156 mike 1063: <pre class="idl">interface <dfn id="htmloutputelement">HTMLOutputElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-103">HTMLElement</a> {
1064: [PutForwards=<a 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.' class="full-spec-link">value</a>] readonly attribute <a href="urls.html#domsettabletokenlist" id="domsettabletokenlist-5">DOMSettableTokenList</a> <span title="dom-output-wrap">htmlFor</span>;
1065: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement-10">HTMLFormElement</a> <a 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.' class="full-spec-link">form</a>;
1066: attribute DOMString <a 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.' class="full-spec-link">name</a>;
1067:
1068: readonly attribute DOMString <a 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.' class="full-spec-link">type</a>;
1069: attribute DOMString <a 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.' class="full-spec-link">defaultValue</a>;
1070: attribute DOMString <a 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.' class="full-spec-link">value</a>;
1071:
1072: readonly attribute boolean <a 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.' class="full-spec-link">willValidate</a>;
1073: readonly attribute <a href="http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#validitystate" class="full-spec-link" title='Read about this "ValidityState" reference in the full HTML5 spec.'>ValidityState</a> <a 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.' class="full-spec-link">validity</a>;
1074: readonly attribute DOMString <a 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.' class="full-spec-link">validationMessage</a>;
1075: boolean <a 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.' class="full-spec-link">checkValidity</a>();
1076: void <a 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.' class="full-spec-link">setCustomValidity</a>(in DOMString error);
1.11 mike 1077:
1.156 mike 1078: readonly attribute <a href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" class="full-spec-link" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a> <a href="http://dev.w3.org/html5/spec/forms.html#dom-lfe-labels" title='Read about this "labels" reference in the full HTML5 spec.' class="full-spec-link">labels</a>;
1.9 mike 1079: };</pre>
1080: </dd>
1.156 mike 1081: </dl><p>The <code><a href="#the-output-element" id="output-11">output</a></code> element <a href="http://dev.w3.org/html5/spec/rendering.html#represents" class="full-spec-link" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> the result of a
1082: calculation.</p><p>The <dfn id="attr-output-for" title="attr-output-for"><code>for</code></dfn> content
1.9 mike 1083: attribute allows an explicit relationship to be made between the
1084: result of a calculation and the elements that represent the values
1085: that went into the calculation or that otherwise influenced the
1.156 mike 1086: calculation. The <code title="attr-output-for"><a href="#attr-output-for" id="for-3">for</a></code> attribute,
1087: 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
1.9 mike 1088: set of unique space-separated tokens</a>, each of which must have
1089: the value of an ID of an element in the same
1.156 mike 1090: <code><a href="http://dev.w3.org/html5/spec/infrastructure.html#document" class="full-spec-link" title='Read about this "Document" reference in the full HTML5 spec.'>Document</a></code>.</p><p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form-57">form</a></code> attribute is used to
1091: explicitly associate the <code><a href="#the-output-element" id="output-12">output</a></code> element with its
1092: <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>
1093: attribute represents the element's name.</p><dl class="domintro"><dt><var title="">output</var> . <code title="dom-output-value"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-output-value" class="full-spec-link" title='Read about this "value" reference in the full HTML5 spec.'>value</a></code> [ = <var title="">value</var> ]</dt>
1.9 mike 1094:
1095: <dd>
1096:
1097: <p>Returns the element's current value.</p>
1098:
1099: <p>Can be set, to change the value.</p>
1100:
1101: </dd>
1102:
1.156 mike 1103: <dt><var title="">output</var> . <code title="dom-output-defaultValue"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-output-defaultvalue" class="full-spec-link" title='Read about this "defaultValue" reference in the full HTML5 spec.'>defaultValue</a></code> [ = <var title="">value</var> ]</dt>
1.9 mike 1104:
1105: <dd>
1106:
1107: <p>Returns the element's current default value.</p>
1108:
1109: <p>Can be set, to change the default value.</p>
1110:
1111: </dd>
1112:
1.156 mike 1113: <dt><var title="">output</var> . <code title="dom-output-type"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-output-type" class="full-spec-link" title='Read about this "type" reference in the full HTML5 spec.'>type</a></code></dt>
1.9 mike 1114:
1115: <dd>
1116:
1117: <p>Returns the string "<code title="">output</code>".</p>
1118:
1119: </dd>
1120:
1121: </dl><div class="example">
1122:
1.156 mike 1123: <p>A simple calculator could use <code><a href="#the-output-element" id="output-13">output</a></code> for its
1.9 mike 1124: display of calculated results:</p>
1125:
1126: <pre><form onsubmit="return false">
1127: <input name=a type=number step=any> +
1128: <input name=b type=number step=any> =
1.32 mike 1129: <output onforminput="value = a.valueAsNumber + b.valueAsNumber"></output>
1.9 mike 1130: </form></pre>
1131:
1.156 mike 1132: </div><h4 id="the-progress-element"><span class="secno">4.10.16 </span>The <dfn><code>progress</code></dfn> element</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments. </i><span><a href="http://www.w3.org/html/wg/tracker/issues/96">ISSUE-96</a> (progress) blocks progress to Last Call</span></p><dl class="element"><dt>Categories</dt>
1133: <dd><a href="content-models.html#flow-content" id="flow-content-120">Flow content</a>.</dd>
1134: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-133">Phrasing content</a>.</dd>
1135: <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-13">form-associated element</a>.</dd>
1.11 mike 1136: <dt>Contexts in which this element may be used:</dt>
1.156 mike 1137: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content-134">phrasing content</a> is expected.</dd>
1.11 mike 1138: <dt>Content model:</dt>
1.156 mike 1139: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-135">Phrasing content</a>, but there must be no <code><a href="#the-progress-element" id="progress-8">progress</a></code> element descendants.</dd>
1.11 mike 1140: <dt>Content attributes:</dt>
1.156 mike 1141: <dd><a href="elements.html#global-attributes" id="global-attributes-93">Global attributes</a></dd>
1142: <dd><code title="attr-progress-value"><a href="#attr-progress-value" id="value-37">value</a></code></dd>
1143: <dd><code title="attr-progress-max"><a href="#attr-progress-max" id="max-36">max</a></code></dd>
1144: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form-58">form</a></code></dd>
1.11 mike 1145: <dt>DOM interface:</dt>
1146: <dd>
1.156 mike 1147: <pre class="idl">interface <dfn id="htmlprogresselement">HTMLProgressElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-104">HTMLElement</a> {
1148: attribute float <a 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.' class="full-spec-link">value</a>;
1149: attribute float <a 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.' class="full-spec-link">max</a>;
1150: readonly attribute float <a 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.' class="full-spec-link">position</a>;
1151: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement-11">HTMLFormElement</a> <a 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.' class="full-spec-link">form</a>;
1152: readonly attribute <a href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" class="full-spec-link" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a> <a href="http://dev.w3.org/html5/spec/forms.html#dom-lfe-labels" title='Read about this "labels" reference in the full HTML5 spec.' class="full-spec-link">labels</a>;
1.11 mike 1153: };</pre>
1154: </dd>
1.156 mike 1155: </dl><p>The <code><a href="#the-progress-element" id="progress-9">progress</a></code> element <a href="http://dev.w3.org/html5/spec/rendering.html#represents" class="full-spec-link" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> the
1.11 mike 1156: completion progress of a task. The progress is either indeterminate,
1157: indicating that progress is being made but that it is not clear how
1158: much more work remains to be done before the task is complete
1159: (e.g. because the task is waiting for a remote host to respond), or
1160: the progress is a number in the range zero to a maximum, giving the
1.156 mike 1161: fraction of work that has so far been completed.</p><p>There are two attributes that determine the current task
1162: completion represented by the element.</p><p>The <dfn id="attr-progress-value" title="attr-progress-value"><code>value</code></dfn>
1.11 mike 1163: attribute specifies how much of the task has been completed, and the
1164: <dfn id="attr-progress-max" title="attr-progress-max"><code>max</code></dfn> attribute
1165: specifies how much work the task requires in total. The units are
1.156 mike 1166: arbitrary and not specified.</p><p>Authors are encouraged to also include the current value and the
1.11 mike 1167: maximum value inline as text inside the element, so that the
1.156 mike 1168: progress is made available to users of legacy user agents.</p><div class="example">
1.11 mike 1169: <p>Here is a snippet of a Web application that shows the progress
1170: of some automated task:</p>
1171: <pre><section>
1172: <h2>Task Progress</h2>
1173: <p>Progress: <progress id="p" max=100><span>0</span>%</progress></p>
1174: <script>
1175: var progressBar = document.getElementById('p');
1176: function updateProgress(newValue) {
1177: progressBar.value = newValue;
1178: progressBar.getElementsByTagName('span')[0].textContent = newValue;
1179: }
1180: </script>
1181: </section></pre>
1182: <p>(The <code>updateProgress()</code> method in this example would
1183: be called by some other code on the page to update the actual
1184: progress bar as the task progressed.)</p>
1.156 mike 1185: </div><p>The <code title="attr-progress-value"><a href="#attr-progress-value" id="value-38">value</a></code> and <code title="attr-progress-max"><a href="#attr-progress-max" id="max-37">max</a></code> attributes, when present, must
1186: 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
1187: floating point numbers</a>. The <code title="attr-progress-value"><a href="#attr-progress-value" id="value-39">value</a></code> attribute, if present, must
1.11 mike 1188: have a value equal to or greater than zero, and less than or equal
1.156 mike 1189: to the value of the <code title="attr-progress-max"><a href="#attr-progress-max" id="max-38">max</a></code>
1190: attribute, if present, or 1.0, otherwise. The <code title="attr-progress-max"><a href="#attr-progress-max" id="max-39">max</a></code> attribute, if present, must
1191: have a value greater than zero.</p><p class="note">The <code><a href="#the-progress-element" id="progress-10">progress</a></code> element is the wrong
1.11 mike 1192: element to use for something that is just a gauge, as opposed to
1193: task progress. For instance, indicating disk space usage using
1.156 mike 1194: <code><a href="#the-progress-element" id="progress-11">progress</a></code> would be inappropriate. Instead, the
1195: <code><a href="#the-meter-element" id="meter-7">meter</a></code> element is available for such use cases.</p><dl class="domintro"><dt><var title="">progress</var> . <code title="dom-progress-position"><a href="http://dev.w3.org/html5/spec/the-button-element.html#dom-progress-position" class="full-spec-link" title='Read about this "position" reference in the full HTML5 spec.'>position</a></code></dt>
1.11 mike 1196:
1197: <dd>
1198:
1199: <p>For a determinate progress bar (one with known current and
1200: maximum values), returns the result of dividing the current value
1201: by the maximum value.</p>
1202:
1.156 mike 1203: <p>For an indeterminate progress bar, returns −1.</p>
1.11 mike 1204:
1.156 mike 1205: </dd></dl><h4 id="the-meter-element"><span class="secno">4.10.17 </span>The <dfn><code>meter</code></dfn> element</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments. </i><span><a href="http://www.w3.org/html/wg/tracker/issues/97">ISSUE-97</a> (meter) blocks progress to Last Call</span></p><!-- Keep this after <progress> and NOT close to <time> --><dl class="element"><dt>Categories</dt>
1206: <dd><a href="content-models.html#flow-content" id="flow-content-121">Flow content</a>.</dd>
1207: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-136">Phrasing content</a>.</dd>
1208: <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-14">form-associated element</a>.</dd>
1.11 mike 1209: <dt>Contexts in which this element may be used:</dt>
1.156 mike 1210: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content-137">phrasing content</a> is expected.</dd>
1.11 mike 1211: <dt>Content model:</dt>
1.156 mike 1212: <dd><a href="content-models.html#phrasing-content" id="phrasing-content-138">Phrasing content</a>, but there must be no <code><a href="#the-meter-element" id="meter-8">meter</a></code> element descendants.</dd>
1.11 mike 1213: <dt>Content attributes:</dt>
1.156 mike 1214: <dd><a href="elements.html#global-attributes" id="global-attributes-94">Global attributes</a></dd>
1215: <dd><code title="attr-meter-value"><a href="#attr-meter-value" id="value-41">value</a></code></dd>
1216: <dd><code title="attr-meter-min"><a href="#attr-meter-min" id="min-38">min</a></code></dd>
1217: <dd><code title="attr-meter-max"><a href="#attr-meter-max" id="max-41">max</a></code></dd>
1218: <dd><code title="attr-meter-low"><a href="#attr-meter-low" id="low">low</a></code></dd>
1219: <dd><code title="attr-meter-high"><a href="#attr-meter-high" id="high">high</a></code></dd>
1220: <dd><code title="attr-meter-optimum"><a href="#attr-meter-optimum" id="optimum">optimum</a></code></dd>
1221: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form-59">form</a></code></dd>
1.11 mike 1222: <dt>DOM interface:</dt>
1223: <dd>
1.156 mike 1224: <pre class="idl">interface <dfn id="htmlmeterelement">HTMLMeterElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement-105">HTMLElement</a> {
1225: attribute float <a 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.' class="full-spec-link">value</a>;
1226: attribute float <a 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.' class="full-spec-link">min</a>;
1227: attribute float <a 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.' class="full-spec-link">max</a>;
1228: attribute float <a 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.' class="full-spec-link">low</a>;
1229: attribute float <a 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.' class="full-spec-link">high</a>;
1230: attribute float <a 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.' class="full-spec-link">optimum</a>;
1231: readonly attribute <a href="forms.html#htmlformelement" id="htmlformelement-12">HTMLFormElement</a> <a 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.' class="full-spec-link">form</a>;
1232: readonly attribute <a href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" class="full-spec-link" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a> <a href="http://dev.w3.org/html5/spec/forms.html#dom-lfe-labels" title='Read about this "labels" reference in the full HTML5 spec.' class="full-spec-link">labels</a>;
1.11 mike 1233: };</pre>
1234: </dd>
1.156 mike 1235: </dl><p>The <code><a href="#the-meter-element" id="meter-9">meter</a></code> element <a href="http://dev.w3.org/html5/spec/rendering.html#represents" class="full-spec-link" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a scalar
1.11 mike 1236: measurement within a known range, or a fractional value; for example
1237: disk usage, the relevance of a query result, or the fraction of a
1.156 mike 1238: voting population to have selected a particular candidate.</p><p>This is also known as a gauge.</p><p class="note">The <code><a href="#the-meter-element" id="meter-10">meter</a></code> element should not be used to
1.11 mike 1239: indicate progress (as in a progress bar). For that role, HTML
1.156 mike 1240: provides a separate <code><a href="#the-progress-element" id="progress-12">progress</a></code> element.</p><p class="note">The <code><a href="#the-meter-element" id="meter-11">meter</a></code> element also does not
1241: represent a scalar value of arbitrary range — for example, it
1.11 mike 1242: would be wrong to use this to report a weight, or height, unless
1.156 mike 1243: there is a known maximum value.</p><p>There are six attributes that determine the semantics of the
1244: gauge represented by the element.</p><p>The <dfn id="attr-meter-min" title="attr-meter-min"><code>min</code></dfn> attribute
1.11 mike 1245: specifies the lower bound of the range, and the <dfn id="attr-meter-max" title="attr-meter-max"><code>max</code></dfn> attribute specifies
1246: the upper bound. The <dfn id="attr-meter-value" title="attr-meter-value"><code>value</code></dfn> attribute
1247: specifies the value to have the gauge indicate as the "measured"
1.156 mike 1248: value.</p><p>The other three attributes can be used to segment the gauge's
1.11 mike 1249: range into "low", "medium", and "high" parts, and to indicate which
1250: part of the gauge is the "optimum" part. The <dfn id="attr-meter-low" title="attr-meter-low"><code>low</code></dfn> attribute specifies
1251: the range that is considered to be the "low" part, and the <dfn id="attr-meter-high" title="attr-meter-high"><code>high</code></dfn> attribute specifies
1252: the range that is considered to be the "high" part. The <dfn id="attr-meter-optimum" title="attr-meter-optimum"><code>optimum</code></dfn> attribute
1253: gives the position that is "optimum"; if that is higher than the
1254: "high" value then this indicates that the higher the value, the
1255: better; if it's lower than the "low" mark then it indicates that
1256: lower values are better, and naturally if it is in between then it
1.156 mike 1257: indicates that neither high nor low values are good.</p><p> The <code title="attr-meter-value"><a href="#attr-meter-value" id="value-42">value</a></code> attribute must be
1258: specified. The <code title="attr-meter-value"><a href="#attr-meter-value" id="value-43">value</a></code>, <code title="attr-meter-min"><a href="#attr-meter-min" id="min-39">min</a></code>, <code title="attr-meter-low"><a href="#attr-meter-low" id="low-0">low</a></code>, <code title="attr-meter-high"><a href="#attr-meter-high" id="high-0">high</a></code>, <code title="attr-meter-max"><a href="#attr-meter-max" id="max-42">max</a></code>, and <code title="attr-meter-optimum"><a href="#attr-meter-optimum" id="optimum-0">optimum</a></code> attributes, when present,
1259: must have values that are <a href="common-microsyntaxes.html#valid-floating-point-number" id="valid-floating-point-number-10" title="valid floating point
1260: number">valid floating point numbers</a>.</p><p>In addition, the attributes' values are further constrained:</p><p>Let <var title="">value</var> be the <code title="attr-meter-value"><a href="#attr-meter-value" id="value-44">value</a></code> attribute's number.</p><p>If the <code title="attr-meter-min"><a href="#attr-meter-min" id="min-40">min</a></code> attribute
1.11 mike 1261: attribute is specified, then let <var title="">minimum</var> be that
1.156 mike 1262: attribute's value; otherwise, let it be zero.</p><p>If the <code title="attr-meter-max"><a href="#attr-meter-max" id="max-43">max</a></code> attribute
1.11 mike 1263: attribute is specified, then let <var title="">maximum</var> be that
1.156 mike 1264: attribute's value; otherwise, let it be 1.0.</p><p>The following inequalities must hold, as applicable:</p><ul class="brief"><li><var title="">minimum</var> ≤ <var title="">value</var> ≤ <var title="">maximum</var></li>
1265: <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>
1266: <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>
1267: <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>
1268: <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 1269: </ul><p class="note">If no minimum or maximum is specified, then the
1.11 mike 1270: range is assumed to be 0..1, and the value thus has to be within
1.156 mike 1271: that range.</p><p>Authors are encouraged to include a textual representation of the
1.11 mike 1272: gauge's state in the element's contents, for users of user agents
1.156 mike 1273: that do not support the <code><a href="#the-meter-element" id="meter-12">meter</a></code> element.</p><div class="example">
1.11 mike 1274:
1275: <p>The following examples show three gauges that would all be
1276: three-quarters full:</p>
1277:
1278: <pre>Storage space usage: <meter value=6 max=8>6 blocks used (out of 8 total)</meter>
1279: Voter turnout: <meter value=0.75><img alt="75%" src="graph75.png"></meter>
1280: Tickets sold: <meter min="0" max="100" value="75"></meter></pre>
1281:
1282: <p>The following example is incorrect use of the element, because
1283: it doesn't give a range (and since the default maximum is 1, both
1284: of the gauges would end up looking maxed out):</p>
1285:
1286: <pre class="bad"><p>The grapefruit pie had a radius of <meter value=12>12cm</meter>
1287: and a height of <meter value=2>2cm</meter>.</p> <!-- <strong>BAD!</strong> --></pre>
1288:
1289: <p>Instead, one would either not include the meter element, or use
1290: the meter element with a defined range to give the dimensions in
1291: context compared to other pies:</p>
1292:
1293: <pre><p>The grapefruit pie had a radius of 12cm and a height of
1294: 2cm.</p>
1295: <dl>
1296: <dt>Radius: <dd> <meter min=0 max=20 value=12>12cm</meter>
1297: <dt>Height: <dd> <meter min=0 max=10 value=2>2cm</meter>
1298: </dl></pre>
1299:
1300: </div><p>There is no explicit way to specify units in the
1.156 mike 1301: <code><a href="#the-meter-element" id="meter-13">meter</a></code> element, but the units may be specified in the
1302: <code title="attr-title"><a href="elements.html#the-title-attribute" id="title-27">title</a></code> attribute in free-form text.</p><div class="example">
1.11 mike 1303:
1304: <p>The example above could be extended to mention the units:</p>
1305:
1306: <pre><dl>
1307: <dt>Radius: <dd> <meter min=0 max=20 value=12 title="centimeters">12cm</meter>
1308: <dt>Height: <dd> <meter min=0 max=10 value=2 title="centimeters">2cm</meter>
1309: </dl></pre>
1310:
1311: </div><div class="example">
1312: <p>The following markup:</p>
1313: <pre><h3>Suggested groups</h3>
1314: <menu type="toolbar">
1315: <a href="?cmd=hsg" onclick="hideSuggestedGroups()">Hide suggested groups</a>
1316: </menu>
1317: <ul>
1318: <li>
1319: <p><a href="/group/comp.infosystems.www.authoring.stylesheets/view">comp.infosystems.www.authoring.stylesheets</a> -
1320: <a href="/group/comp.infosystems.www.authoring.stylesheets/subscribe">join</a></p>
1321: <p>Group description: <strong>Layout/presentation on the WWW.</strong></p>
1322: <p><strong><meter value="0.5">Moderate activity,</meter></strong> Usenet, 618 subscribers</p>
1323: </li>
1324: <li>
1325: <p><a href="/group/netscape.public.mozilla.xpinstall/view">netscape.public.mozilla.xpinstall</a> -
1326: <a href="/group/netscape.public.mozilla.xpinstall/subscribe">join</a></p>
1327: <p>Group description: <strong>Mozilla XPInstall discussion.</strong></p>
1328: <p><strong><meter value="0.25">Low activity,</meter></strong> Usenet, 22 subscribers</p>
1329: </li>
1330: <li>
1331: <p><a href="/group/mozilla.dev.general/view">mozilla.dev.general</a> -
1332: <a href="/group/mozilla.dev.general/subscribe">join</a></p>
1333: <p><strong><meter value="0.25">Low activity,</meter></strong> Usenet, 66 subscribers</p>
1334: </li>
1335: </ul></pre>
1336: <p>Might be rendered as follows:</p>
1.156 mike 1337: <p><img alt="With the <meter> elements rendered as inline green bars of varying lengths." src="http://dev.w3.org/html5/spec/images/sample-meter.png"></p>
1.13 mike 1338: </div><p>User agents combine the value of
1.156 mike 1339: 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 1340: attributes to provide context-sensitive help or inline text
1.156 mike 1341: detailing the actual values.</p><div class="example">
1.11 mike 1342: <p>For example, the following snippet:</p>
1343: <pre><meter min=0 max=60 value=23.2 title=seconds></meter></pre>
1344: <p>...might cause the user agent to display a gauge with a tooltip
1345: saying "Value: 23.2 out of 60." on one line and "seconds" on a
1346: second line.</p>
1.156 mike 1347: </div><p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form-60">form</a></code> attribute is used to
1348: explicitly associate the <code><a href="#the-meter-element" id="meter-14">meter</a></code> element with its
1349: <a href="association-of-controls-and-forms.html#form-owner" id="form-owner-13">form owner</a>.</p><div class="example">
1.11 mike 1350:
1351: <p>The following example shows how a gauge could fall back to
1352: localized or pretty-printed text.</p>
1353:
1.156 mike 1354: <pre><p>Disk usage: <meter min=0 value=170261928 max=233257824>170 261 928 bytes used
1355: out of 233 257 824 bytes available</meter></p></pre>
1.11 mike 1356:
1.156 mike 1357: </div></body></html>
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