Annotation of html5/spec-author-view/the-button-element.html, revision 1.602
1.577 mike 1: <!doctype html>
1.595 mike 2: <html lang="en-US-x-Hixie"><meta content="text/html; charset=utf-8" http-equiv="Content-Type"><title>4.10.8 The button element — HTML5: Edition for Web Authors</title><link href="style.css" rel="stylesheet"><link href="http://www.w3.org/StyleSheets/TR/W3C-ED" rel="stylesheet" type="text/css"><script src="link-fixup.js" type="text/javascript"></script><style type="text/css">
1.1 mike 3:
4: .applies thead th > * { display: block; }
5: .applies thead code { display: block; }
6: .applies tbody th { whitespace: nowrap; }
7: .applies td { text-align: center; }
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9:
1.136 mike 10: .matrix, .matrix td { border: hidden; text-align: right; }
1.1 mike 11: .matrix { margin-left: 2em; }
12:
13: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
14: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
15: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
16:
1.213 mike 17: td.eg { border-width: thin; text-align: center; }
18:
1.1 mike 19: #table-example-1 { border: solid thin; border-collapse: collapse; margin-left: 3em; }
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23: #table-example-1 th, #table-example-1 td { border: solid thin; }
24: #table-example-1 th { font-weight: normal; }
25: #table-example-1 td { border-style: none solid; vertical-align: top; }
26: #table-example-1 th { padding: 0.5em; vertical-align: middle; text-align: center; }
27: #table-example-1 tbody tr:first-child td { padding-top: 0.5em; }
28: #table-example-1 tbody tr:last-child td { padding-bottom: 1.5em; }
29: #table-example-1 tbody td:first-child { padding-left: 2.5em; padding-right: 0; width: 9em; }
30: #table-example-1 tbody td:first-child::after { content: leader(". "); }
31: #table-example-1 tbody td { padding-left: 2em; padding-right: 2em; }
32: #table-example-1 tbody td:first-child + td { width: 10em; }
33: #table-example-1 tbody td:first-child + td ~ td { width: 2.5em; }
34: #table-example-1 tbody td:first-child + td + td + td ~ td { width: 1.25em; }
35:
36: .apple-table-examples { border: none; border-collapse: separate; border-spacing: 1.5em 0em; width: 40em; margin-left: 3em; }
37: .apple-table-examples * { font-family: "Times", serif; }
38: .apple-table-examples td, .apple-table-examples th { border: none; white-space: nowrap; padding-top: 0; padding-bottom: 0; }
39: .apple-table-examples tbody th:first-child { border-left: none; width: 100%; }
40: .apple-table-examples thead th:first-child ~ th { font-size: smaller; font-weight: bolder; border-bottom: solid 2px; text-align: center; }
41: .apple-table-examples tbody th::after, .apple-table-examples tfoot th::after { content: leader(". ") }
42: .apple-table-examples tbody th, .apple-table-examples tfoot th { font: inherit; text-align: left; }
43: .apple-table-examples td { text-align: right; vertical-align: top; }
44: .apple-table-examples.e1 tbody tr:last-child td { border-bottom: solid 1px; }
1.9 mike 45: .apple-table-examples.e1 tbody + tbody tr:last-child td { border-bottom: double 3px; }
46: .apple-table-examples.e2 th[scope=row] { padding-left: 1em; }
47: .apple-table-examples sup { line-height: 0; }
48:
1.11 mike 49: .details-example img { vertical-align: top; }
50:
1.386 mike 51: #base64-table {
52: white-space: nowrap;
53: font-size: 0.6em;
54: column-width: 6em;
55: column-count: 5;
56: column-gap: 1em;
57: -moz-column-width: 6em;
58: -moz-column-count: 5;
59: -moz-column-gap: 1em;
60: -webkit-column-width: 6em;
61: -webkit-column-count: 5;
62: -webkit-column-gap: 1em;
63: }
64: #base64-table thead { display: none; }
65: #base64-table * { border: none; }
66: #base64-table tbody td:first-child:after { content: ':'; }
67: #base64-table tbody td:last-child { text-align: right; }
68:
1.26 mike 69: #named-character-references-table {
1.257 mike 70: white-space: nowrap;
1.26 mike 71: font-size: 0.6em;
1.257 mike 72: column-width: 30em;
1.26 mike 73: column-gap: 1em;
1.257 mike 74: -moz-column-width: 30em;
1.26 mike 75: -moz-column-gap: 1em;
1.257 mike 76: -webkit-column-width: 30em;
1.26 mike 77: -webkit-column-gap: 1em;
78: }
1.257 mike 79: #named-character-references-table > table > tbody > tr > td:first-child + td,
1.26 mike 80: #named-character-references-table > table > tbody > tr > td:last-child { text-align: center; }
81: #named-character-references-table > table > tbody > tr > td:last-child:hover > span { position: absolute; top: auto; left: auto; margin-left: 0.5em; line-height: 1.2; font-size: 5em; border: outset; padding: 0.25em 0.5em; background: white; width: 1.25em; height: auto; text-align: center; }
1.257 mike 82: #named-character-references-table > table > tbody > tr#entity-CounterClockwiseContourIntegral > td:first-child { font-size: 0.5em; }
1.26 mike 83:
1.35 mike 84: .glyph.control { color: red; }
85:
1.38 mike 86: @font-face {
87: font-family: 'Essays1743';
88: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743.ttf');
89: }
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97: font-style: italic;
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101: font-family: 'Essays1743';
102: font-style: italic;
103: font-weight: bold;
104: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-BoldItalic.ttf');
105: }
106:
1.425 mike 107: </style><script type="text/javascript">
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109: var params = location.search.substr(1).split("&");
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111: if (params[index] == name)
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142: }
1.578 mike 143: </script><script src="dfn.js" type="text/javascript"></script><script src="toc.js" type="text/javascript"></script><link href="common-input-element-apis.html" rel="prev" title="4.10.7.3 Common input element APIs">
144: <link href="Overview.html#contents" rel="contents" title="Table of contents">
1.570 mike 145: <link href="the-select-element.html" rel="next" title="4.10.9 The select element">
1.578 mike 146: <body class="split chapter"><div class="head" id="head">
1.469 mike 147: <div aria-haspopup="true" id="jumpIndexA-button" role="button" tabindex="0">jump
1.600 mike 148: <div id="jumpIndexA"><ul><li><a class="noindex" href="the-a-element.html#the-a-element">a</a><a class="noindex" href="the-abbr-element.html#the-abbr-element">abbr</a><a class="noindex" href="the-address-element.html#the-address-element">address</a><a class="noindex" href="the-area-element.html#the-area-element">area</a><a class="noindex" href="the-article-element.html#the-article-element">article</a><a class="noindex" href="the-aside-element.html#the-aside-element">aside</a><a class="noindex" href="the-audio-element.html#the-audio-element">audio</a></ul><ul><li><a class="noindex" href="the-b-element.html#the-b-element">b</a><a class="noindex" href="the-base-element.html#the-base-element">base</a><a class="noindex" href="the-bdi-element.html#the-bdi-element">bdi</a><a class="noindex" href="the-bdo-element.html#the-bdo-element">bdo</a><a class="noindex" href="the-blockquote-element.html#the-blockquote-element">blockquote</a><a class="noindex" href="the-body-element.html#the-body-element">body</a><a class="noindex" href="the-br-element.html#the-br-element">br</a><a class="noindex" href="#the-button-element">button</a></ul><ul><li><a class="noindex" href="the-canvas-element.html#the-canvas-element">canvas</a><a class="noindex" href="the-caption-element.html#the-caption-element">caption</a><a class="noindex" href="the-cite-element.html#the-cite-element">cite</a><a class="noindex" href="the-code-element.html#the-code-element">code</a><a class="noindex" href="the-col-element.html#the-col-element">col</a><a class="noindex" href="the-colgroup-element.html#the-colgroup-element">colgroup</a><a class="noindex" href="the-command-element.html#the-command-element">command</a></ul><ul><li><a class="noindex" href="the-datalist-element.html#the-datalist-element">datalist</a><a class="noindex" href="the-dd-element.html#the-dd-element">dd</a><a class="noindex" href="the-del-element.html#the-del-element">del</a><a class="noindex" 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class="noindex" href="the-pre-element.html#the-pre-element">pre</a><a class="noindex" href="the-progress-element.html#the-progress-element">progress</a><a class="noindex" href="the-q-element.html#the-q-element">q</a><a class="noindex" href="the-rp-element.html#the-rp-element">rp</a><a class="noindex" href="the-rt-element.html#the-rt-element">rt</a><a class="noindex" href="the-ruby-element.html#the-ruby-element">ruby</a></ul><ul><li><a class="noindex" href="the-s-element.html#the-s-element">s</a><a class="noindex" href="the-samp-element.html#the-samp-element">samp</a><a class="noindex" href="the-script-element.html#the-script-element">script</a><a class="noindex" href="the-section-element.html#the-section-element">section</a><a class="noindex" href="the-select-element.html#the-select-element">select</a><a class="noindex" href="the-small-element.html#the-small-element">small</a><a class="noindex" href="the-source-element.html#the-source-element">source</a><a class="noindex" 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href="the-thead-element.html#the-thead-element">thead</a><a class="noindex" href="the-time-element.html#the-time-element">time</a><a class="noindex" href="the-title-element.html#the-title-element">title</a></ul><ul><li><a class="noindex" href="the-tr-element.html#the-tr-element">tr</a><a class="noindex" href="the-track-element.html#the-track-element">track</a><a class="noindex" href="the-u-element.html#the-u-element">u</a><a class="noindex" href="the-ul-element.html#the-ul-element">ul</a><a class="noindex" href="the-var-element.html#the-var-element">var</a><a class="noindex" href="the-video-element.html#the-video-element">video</a><a class="noindex" href="the-wbr-element.html#the-wbr-element">wbr</a></ul><ul class="jumpIndexA-other"><li><a class="noindex" href="global-attributes.html#global-attributes">global attributes</a><a class="noindex" href="index-of-terms.html#index-of-terms">terms</a></ul></div></div>
1.552 mike 149: <script src="jump-indexes.js"></script><p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
150:
1.570 mike 151: <h1>HTML5: Edition for Web Authors</h1>
152:
153: </div><div class="prev_next">
1.578 mike 154: <a href="common-input-element-apis.html">← 4.10.7.3 Common input element APIs</a> –
1.160 mike 155: <a href="Overview.html#contents">Table of contents</a> –
1.570 mike 156: <a href="the-select-element.html">4.10.9 The select element →</a>
1.552 mike 157: </div>
1.156 mike 158:
1.570 mike 159: <h4 id="the-button-element"><span class="secno">4.10.8 </span>The <dfn aria-haspopup="true" role="button" tabindex="0"><code>button</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.596 mike 160: <dd><a href="content-models.html#flow-content" id="flow-content_130">Flow content</a>.</dd>
161: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_138">Phrasing content</a>.</dd>
1.516 mike 162: <dd><a href="content-models.html#interactive-content" id="interactive-content_13">Interactive content</a>.</dd>
1.578 mike 163: <dd><a href="forms.html#category-listed" id="category-listed_5" title="category-listed">Listed</a>, <a href="forms.html#category-label" id="category-label_3" title="category-label">labelable</a>, and <a href="forms.html#category-submit" id="category-submit_4" title="category-submit">submittable</a> <a href="forms.html#form-associated-element" id="form-associated-element_8">form-associated element</a>.</dd>
1.596 mike 164: <dd><a href="content-models.html#palpable-content" id="palpable-content_54">Palpable content</a>.</dd>
1.424 mike 165: <dt>Contexts in which this element can be used:</dt>
1.596 mike 166: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_139">phrasing content</a> is expected.</dd>
1.424 mike 167: <dt>Content model:</dt>
1.596 mike 168: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_140">Phrasing content</a>, but there must be no <a href="content-models.html#interactive-content" id="interactive-content_14">interactive content</a> descendant.</dd>
1.424 mike 169: <dt>Content attributes:</dt>
1.552 mike 170: <dd><a href="global-attributes.html#global-attributes" id="global-attributes_89">Global attributes</a></dd>
1.578 mike 171: <dd><code title="attr-fe-autofocus"><a href="attributes-common-to-form-controls.html#attr-fe-autofocus" id="autofocus_1">autofocus</a></code></dd>
1.591 mike 172: <dd><code title="attr-fe-disabled"><a href="attributes-common-to-form-controls.html#attr-fe-disabled" id="disabled_13">disabled</a></code></dd>
1.596 mike 173: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_51">form</a></code></dd>
1.578 mike 174: <dd><code title="attr-fs-formaction"><a href="attributes-common-to-form-controls.html#attr-fs-formaction" id="formaction_26">formaction</a></code></dd>
175: <dd><code title="attr-fs-formenctype"><a href="attributes-common-to-form-controls.html#attr-fs-formenctype" id="formenctype_26">formenctype</a></code></dd>
176: <dd><code title="attr-fs-formmethod"><a href="attributes-common-to-form-controls.html#attr-fs-formmethod" id="formmethod_26">formmethod</a></code></dd>
177: <dd><code title="attr-fs-formnovalidate"><a href="attributes-common-to-form-controls.html#attr-fs-formnovalidate" id="formnovalidate_27">formnovalidate</a></code></dd>
178: <dd><code title="attr-fs-formtarget"><a href="attributes-common-to-form-controls.html#attr-fs-formtarget" id="formtarget_26">formtarget</a></code></dd>
1.591 mike 179: <dd><code title="attr-fe-name"><a href="attributes-common-to-form-controls.html#attr-fe-name" id="name_36">name</a></code></dd>
1.596 mike 180: <dd><code title="attr-button-type"><a href="#attr-button-type" id="type_83">type</a></code></dd>
1.600 mike 181: <dd><code title="attr-button-value"><a href="#attr-button-value" id="value_32">value</a></code></dd>
1.424 mike 182: <dt>DOM interface:</dt>
1.9 mike 183: <dd>
1.585 mike 184: <pre class="idl">interface <dfn aria-haspopup="true" id="htmlbuttonelement" role="button" tabindex="0">HTMLButtonElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_96">HTMLElement</a> {
1.578 mike 185: attribute boolean <a href="attributes-common-to-form-controls.html#dom-fe-autofocus" id="dom-fe-autofocus_1" title="dom-fe-autofocus">autofocus</a>;
186: attribute boolean <a href="attributes-common-to-form-controls.html#dom-fe-disabled" id="dom-fe-disabled_1" title="dom-fe-disabled">disabled</a>;
187: readonly attribute <a href="the-form-element.html#htmlformelement" id="htmlformelement_5">HTMLFormElement</a>? <a href="association-of-controls-and-forms.html#dom-fae-form" title="dom-fae-form">form</a>;
188: attribute DOMString <a href="attributes-common-to-form-controls.html#dom-fs-formaction" id="dom-fs-formaction_1" title="dom-fs-formAction">formAction</a>;
189: attribute DOMString <a href="attributes-common-to-form-controls.html#dom-fs-formenctype" id="dom-fs-formenctype_1" title="dom-fs-formEnctype">formEnctype</a>;
190: attribute DOMString <a href="attributes-common-to-form-controls.html#dom-fs-formmethod" id="dom-fs-formmethod_1" title="dom-fs-formMethod">formMethod</a>;
1.582 mike 191: attribute boolean <a href="attributes-common-to-form-controls.html#dom-fs-formnovalidate" id="dom-fs-formnovalidate_1" title="dom-fs-formNoValidate">formNoValidate</a>;
1.578 mike 192: attribute DOMString <a href="attributes-common-to-form-controls.html#dom-fs-formtarget" id="dom-fs-formtarget_1" title="dom-fs-formTarget">formTarget</a>;
193: attribute DOMString <a href="attributes-common-to-form-controls.html#dom-fe-name" id="dom-fe-name_2" title="dom-fe-name">name</a>;
1.557 mike 194: attribute DOMString <a href="#dom-button-type" id="dom-button-type_0" title="dom-button-type">type</a>;
195: attribute DOMString <a href="#dom-button-value" id="dom-button-value_0" title="dom-button-value">value</a>;
1.162 mike 196:
1.578 mike 197: readonly attribute boolean <a href="constraints.html#dom-cva-willvalidate" title="dom-cva-willValidate">willValidate</a>;
1.602 ! mike 198: readonly attribute <a class="full-spec-link" href="http://dev.w3.org/html5/spec/constraints.html#validitystate" title='Read about this "ValidityState" reference in the full HTML5 spec.'>ValidityState</a> <a href="constraints.html#dom-cva-validity" id="dom-cva-validity_3" title="dom-cva-validity">validity</a>;
1.578 mike 199: readonly attribute DOMString <a href="constraints.html#dom-cva-validationmessage" title="dom-cva-validationMessage">validationMessage</a>;
200: boolean <a href="constraints.html#dom-cva-checkvalidatity" title="dom-cva-checkValidatity">checkValidity</a>();
1.591 mike 201: void <a href="constraints.html#dom-cva-setcustomvalidity" title="dom-cva-setCustomValidity">setCustomValidity</a>(DOMString error);
1.9 mike 202:
1.578 mike 203: readonly attribute <a class="full-spec-link" href="http://dev.w3.org/html5/spec/infrastructure.html#nodelist" title='Read about this "NodeList" reference in the full HTML5 spec.'>NodeList</a> <a href="the-label-element.html#dom-lfe-labels" title="dom-lfe-labels">labels</a>;
1.9 mike 204: };</pre>
205: </dd>
1.596 mike 206: </dl><p>The <code><a href="#the-button-element" id="button_14">button</a></code> element <a class="full-spec-link" href="http://dev.w3.org/html5/spec/rendering.html#represents" title='Read about this "represents" reference in the full HTML5 spec.'>represents</a> a
1.516 mike 207: button. <p>The element is a <a href="forms.html#concept-button" id="concept-button_4" title="concept-button">button</a>.<p>The <dfn aria-haspopup="true" id="attr-button-type" role="button" tabindex="0"><code>type</code></dfn>
1.9 mike 208: attribute controls the behavior of the button when it is activated.
1.578 mike 209: It is an <a href="common-microsyntaxes.html#enumerated-attribute" id="enumerated-attribute_10">enumerated attribute</a>. The following table
1.160 mike 210: lists the keywords and states for the attribute — the keywords
1.9 mike 211: in the left column map to the states in the cell in the second
1.160 mike 212: column on the same row as the keyword.<table><thead><tr><th> Keyword
213: <th> State
214: <th> Brief description
1.461 mike 215: <tbody><tr><td><dfn aria-haspopup="true" id="attr-button-type-submit" role="button" tabindex="0"><code>submit</code></dfn>
1.578 mike 216: <td><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#attr-button-type-submit-state" title='Read about this "Submit Button" reference in the full HTML5 spec.'>Submit Button</a>
1.160 mike 217: <td>Submits the form.
1.461 mike 218: <tr><td><dfn aria-haspopup="true" id="attr-button-type-reset" role="button" tabindex="0"><code>reset</code></dfn>
1.578 mike 219: <td><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#attr-button-type-reset-state" title='Read about this "Reset Button" reference in the full HTML5 spec.'>Reset Button</a>
1.160 mike 220: <td>Resets the form.
1.461 mike 221: <tr><td><dfn aria-haspopup="true" id="attr-button-type-button" role="button" tabindex="0"><code>button</code></dfn>
1.578 mike 222: <td><a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#attr-button-type-button-state" title='Read about this "Button" reference in the full HTML5 spec.'>Button</a>
1.160 mike 223: <td>Does nothing.
1.578 mike 224: </table><p>The <i>missing value default</i> is the <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#attr-button-type-submit-state" title='Read about this "Submit Button" reference in the full HTML5 spec.'>Submit Button</a>
1.596 mike 225: state.<p>If the <code title="attr-button-type"><a href="#attr-button-type" id="type_84">type</a></code> attribute is in
1.578 mike 226: the <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#attr-button-type-submit-state" title='Read about this "Submit Button" reference in the full HTML5 spec.'>Submit Button</a>
1.596 mike 227: state, the element is specifically a <a href="forms.html#concept-submit-button" id="concept-submit-button_2" title="concept-submit-button">submit button</a>.<p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form" id="form_52">form</a></code> attribute is used to
228: explicitly associate the <code><a href="#the-button-element" id="button_15">button</a></code> element with its
1.591 mike 229: <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="attributes-common-to-form-controls.html#attr-fe-name" id="name_37">name</a></code>
230: attribute represents the element's name. The <code title="attr-fe-disabled"><a href="attributes-common-to-form-controls.html#attr-fe-disabled" id="disabled_14">disabled</a></code> attribute is used to make
1.9 mike 231: the control non-interactive and to prevent its value from being
1.578 mike 232: submitted. The <code title="attr-fe-autofocus"><a href="attributes-common-to-form-controls.html#attr-fe-autofocus" id="autofocus_2">autofocus</a></code>
233: attribute controls focus. The <code title="attr-fs-formaction"><a href="attributes-common-to-form-controls.html#attr-fs-formaction" id="formaction_27">formaction</a></code>, <code title="attr-fs-formenctype"><a href="attributes-common-to-form-controls.html#attr-fs-formenctype" id="formenctype_27">formenctype</a></code>, <code title="attr-fs-formmethod"><a href="attributes-common-to-form-controls.html#attr-fs-formmethod" id="formmethod_27">formmethod</a></code>, <code title="attr-fs-formnovalidate"><a href="attributes-common-to-form-controls.html#attr-fs-formnovalidate" id="formnovalidate_28">formnovalidate</a></code>, and <code title="attr-fs-formtarget"><a href="attributes-common-to-form-controls.html#attr-fs-formtarget" id="formtarget_27">formtarget</a></code> attributes are
234: <a href="attributes-common-to-form-controls.html#attributes-for-form-submission" id="attributes-for-form-submission_3">attributes for form submission</a>.<p class="note">The <code title="attr-fs-formnovalidate"><a href="attributes-common-to-form-controls.html#attr-fs-formnovalidate" id="formnovalidate_29">formnovalidate</a></code> attribute can
1.9 mike 235: be used to make submit buttons that do not trigger the constraint
1.578 mike 236: validation.<p>The <code title="attr-fs-formaction"><a href="attributes-common-to-form-controls.html#attr-fs-formaction" id="formaction_28">formaction</a></code>, <code title="attr-fs-formenctype"><a href="attributes-common-to-form-controls.html#attr-fs-formenctype" id="formenctype_28">formenctype</a></code>, <code title="attr-fs-formmethod"><a href="attributes-common-to-form-controls.html#attr-fs-formmethod" id="formmethod_28">formmethod</a></code>, <code title="attr-fs-formnovalidate"><a href="attributes-common-to-form-controls.html#attr-fs-formnovalidate" id="formnovalidate_30">formnovalidate</a></code>, and <code title="attr-fs-formtarget"><a href="attributes-common-to-form-controls.html#attr-fs-formtarget" id="formtarget_28">formtarget</a></code> must not be specified
1.596 mike 237: if the element's <code title="attr-button-type"><a href="#attr-button-type" id="type_85">type</a></code>
1.578 mike 238: attribute is not in the <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-button-element.html#attr-button-type-submit-state" title='Read about this "Submit Button" reference in the full HTML5 spec.'>Submit Button</a>
1.461 mike 239: state.<p>The <dfn aria-haspopup="true" id="attr-button-value" role="button" tabindex="0"><code>value</code></dfn>
1.9 mike 240: attribute gives the element's value for the purposes of form
1.602 ! mike 241: submission. The element's <a class="full-spec-link" href="http://dev.w3.org/html5/spec/attributes-common-to-form-controls.html#concept-fe-value" title='Read about this "value" reference in the full HTML5 spec.'>value</a> is the value of the element's
1.600 mike 242: <code title="attr-button-value"><a href="#attr-button-value" id="value_33">value</a></code> attribute, if there is
1.160 mike 243: one, or the empty string otherwise.<p class="note">A button (and its value) is only included in the
1.9 mike 244: form submission if the button itself was used to initiate the form
1.575 mike 245: submission.</p>
246: <p>The <dfn aria-haspopup="true" id="dom-button-value" role="button" tabindex="0"><code>value</code></dfn> IDL
1.601 mike 247: attribute must <a href="common-dom-interfaces.html#reflect" id="reflect_71">reflect</a> the content attribute of the
1.575 mike 248: same name.</p>
249:
250: <p>The <dfn aria-haspopup="true" id="dom-button-type" role="button" tabindex="0"><code>type</code></dfn> IDL
1.601 mike 251: attribute must <a href="common-dom-interfaces.html#reflect" id="reflect_72">reflect</a> the content attribute of the
1.578 mike 252: same name, <a class="full-spec-link" href="http://dev.w3.org/html5/spec/common-dom-interfaces.html#limited-to-only-known-values" title='Read about this "limited to only known values" reference in the full HTML5 spec.'>limited to only known values</a>.</p>
1.575 mike 253: <div class="example">
1.9 mike 254:
255: <p>The following button is labeled "Show hint" and pops up a dialog
256: box when activated:</p>
257:
258: <pre><button type=button
259: onclick="alert('This 15-20 minute piece was composed by George Gershwin.')">
260: Show hint
261: </button></pre>
262:
1.160 mike 263: </div>
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