Annotation of html5/spec-author-view/the-button-element.html, revision 1.35
1.1 mike 1: <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
2: <!DOCTYPE html>
1.20 mike 3: <!-- when publishing, change bits marked ZZZ --><html lang="en-US-x-Hixie" class="split chapter"><head><title>4.10.8 The button element — HTML5 (Author Edition)</title><script src="link-fixup.js"></script><link href="whatwg.css" rel="stylesheet"><style type="text/css">
1.1 mike 4: pre { margin-left: 2em; white-space: pre-wrap; }
5: h2 { margin: 3em 0 1em 0; }
6: h3 { margin: 2.5em 0 1em 0; }
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11: p { margin: 1em 0; }
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13: dl, dd { margin-top: 0; margin-bottom: 0; }
14: dt { margin-top: 0.75em; margin-bottom: 0.25em; clear: left; }
15: dt + dt { margin-top: 0; }
16: dd dt { margin-top: 0.25em; margin-bottom: 0; }
17: dd p { margin-top: 0; }
18: dd dl + p { margin-top: 1em; }
19: dd table + p { margin-top: 1em; }
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22: dt dfn { font-style: italic; }
23: pre, code { font-size: inherit; font-family: monospace; font-variant: normal; }
24: pre strong { color: black; font: inherit; font-weight: bold; background: yellow; }
25: pre em { font-weight: bolder; font-style: normal; }
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27: var sub { vertical-align: bottom; font-size: smaller; position: relative; top: 0.1em; }
28: table { border-collapse: collapse; border-style: hidden hidden none hidden; }
1.34 mike 29: table thead, table tbody { border-bottom: solid; }
1.1 mike 30: table tbody th:first-child { border-left: solid; }
31: table tbody th { text-align: left; }
32: table td, table th { border-left: solid; border-right: solid; border-bottom: solid thin; vertical-align: top; padding: 0.2em; }
33: blockquote { margin: 0 0 0 2em; border: 0; padding: 0; font-style: italic; }
34:
35: .bad, .bad *:not(.XXX) { color: gray; border-color: gray; background: transparent; }
36: .matrix, .matrix td { border: none; text-align: right; }
37: .matrix { margin-left: 2em; }
38: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
39: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
40: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
41:
42: .toc dfn, h1 dfn, h2 dfn, h3 dfn, h4 dfn, h5 dfn, h6 dfn { font: inherit; }
43: img.extra { float: right; }
44: pre.idl { border: solid thin; background: #EEEEEE; color: black; padding: 0.5em 1em; }
45: pre.idl :link, pre.idl :visited { color: inherit; background: transparent; }
46: pre.css { border: solid thin; background: #FFFFEE; color: black; padding: 0.5em 1em; }
47: pre.css:first-line { color: #AAAA50; }
1.23 mike 48: dl.domintro { color: green; margin: 2em 0 2em 2em; padding: 0.5em 1em; border: none; background: #DDFFDD; }
1.1 mike 49: hr + dl.domintro, div.impl + dl.domintro { margin-top: 2.5em; margin-bottom: 1.5em; }
50: dl.domintro dt, dl.domintro dt * { color: black; text-decoration: none; }
51: dl.domintro dd { margin: 0.5em 0 1em 2em; padding: 0; }
52: dl.domintro dd p { margin: 0.5em 0; }
53: dl.switch { padding-left: 2em; }
54: dl.switch > dt { text-indent: -1.5em; }
55: dl.switch > dt:before { content: '\21AA'; padding: 0 0.5em 0 0; display: inline-block; width: 1em; text-align: right; line-height: 0.5em; }
56: dl.triple { padding: 0 0 0 1em; }
57: dl.triple dt, dl.triple dd { margin: 0; display: inline }
58: dl.triple dt:after { content: ':'; }
59: dl.triple dd:after { content: '\A'; white-space: pre; }
60: .diff-old { text-decoration: line-through; color: silver; background: transparent; }
61: .diff-chg, .diff-new { text-decoration: underline; color: green; background: transparent; }
62: a .diff-new { border-bottom: 1px blue solid; }
63:
64: h2 { page-break-before: always; }
65: h1, h2, h3, h4, h5, h6 { page-break-after: avoid; }
66: h1 + h2, hr + h2.no-toc { page-break-before: auto; }
67:
68: p > span:not([title=""]):not([class="XXX"]):not([class="impl"]), li > span:not([title=""]):not([class="XXX"]):not([class="impl"]) { border-bottom: solid #9999CC; }
69:
70: div.head { margin: 0 0 1em; padding: 1em 0 0 0; }
71: div.head p { margin: 0; }
72: div.head h1 { margin: 0; }
73: div.head .logo { float: right; margin: 0 1em; }
74: div.head .logo img { border: none } /* remove border from top image */
75: div.head dl { margin: 1em 0; }
76: div.head p.copyright, div.head p.alt { font-size: x-small; font-style: oblique; margin: 0; }
77:
78: body > .toc > li { margin-top: 1em; margin-bottom: 1em; }
79: body > .toc.brief > li { margin-top: 0.35em; margin-bottom: 0.35em; }
80: body > .toc > li > * { margin-bottom: 0.5em; }
81: body > .toc > li > * > li > * { margin-bottom: 0.25em; }
82: .toc, .toc li { list-style: none; }
83:
84: .brief { margin-top: 1em; margin-bottom: 1em; line-height: 1.1; }
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86: .brief li p { margin: 0; padding: 0; }
87:
88: .category-list { margin-top: -0.75em; margin-bottom: 1em; line-height: 1.5; }
89: .category-list::before { content: '\21D2\A0'; font-size: 1.2em; font-weight: 900; }
90: .category-list li { display: inline; }
91: .category-list li:not(:last-child)::after { content: ', '; }
92: .category-list li > span, .category-list li > a { text-transform: lowercase; }
93: .category-list li * { text-transform: none; } /* don't affect <code> nested in <a> */
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95: .XXX { color: #E50000; background: white; border: solid red; padding: 0.5em; margin: 1em 0; }
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145:
146: ul.domTree, ul.domTree ul { padding: 0 0 0 1em; margin: 0; }
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151: ul.domTree span { font-style: italic; font-family: serif; }
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153: ul.domTree .t2 { font-style: normal; font-family: monospace; }
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158: ul.domTree .t10 code { color: teal; }
159:
1.14 mike 160: body.dfnEnabled dfn { cursor: pointer; }
161: .dfnPanel {
162: display: inline;
163: position: absolute;
164: z-index: 10;
165: height: auto;
166: width: auto;
167: padding: 0.5em 0.75em;
168: font: small sans-serif, Droid Sans Fallback;
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170: color: black;
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172: }
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176: .dfnPanel * + p { margin-top: 0.25em; }
177: .dfnPanel li { list-style-position: inside; }
178:
1.1 mike 179: #configUI { position: absolute; z-index: 20; top: 10em; right: 1em; width: 11em; font-size: small; }
180: #configUI p { margin: 0.5em 0; padding: 0.3em; background: #EEEEEE; color: black; border: inset thin; }
181: #configUI p label { display: block; }
182: #configUI #updateUI, #configUI .loginUI { text-align: center; }
183: #configUI input[type=button] { display: block; margin: auto; }
184: </style><style type="text/css">
185:
186: .applies thead th > * { display: block; }
187: .applies thead code { display: block; }
188: .applies tbody th { whitespace: nowrap; }
189: .applies td { text-align: center; }
190: .applies .yes { background: yellow; }
191:
192: .matrix, .matrix td { border: none; text-align: right; }
193: .matrix { margin-left: 2em; }
194:
195: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
196: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
197: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
198:
199: #table-example-1 { border: solid thin; border-collapse: collapse; margin-left: 3em; }
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214: #table-example-1 tbody td:first-child + td + td + td ~ td { width: 1.25em; }
215:
216: .apple-table-examples { border: none; border-collapse: separate; border-spacing: 1.5em 0em; width: 40em; margin-left: 3em; }
217: .apple-table-examples * { font-family: "Times", serif; }
218: .apple-table-examples td, .apple-table-examples th { border: none; white-space: nowrap; padding-top: 0; padding-bottom: 0; }
219: .apple-table-examples tbody th:first-child { border-left: none; width: 100%; }
220: .apple-table-examples thead th:first-child ~ th { font-size: smaller; font-weight: bolder; border-bottom: solid 2px; text-align: center; }
221: .apple-table-examples tbody th::after, .apple-table-examples tfoot th::after { content: leader(". ") }
222: .apple-table-examples tbody th, .apple-table-examples tfoot th { font: inherit; text-align: left; }
223: .apple-table-examples td { text-align: right; vertical-align: top; }
224: .apple-table-examples.e1 tbody tr:last-child td { border-bottom: solid 1px; }
1.9 mike 225: .apple-table-examples.e1 tbody + tbody tr:last-child td { border-bottom: double 3px; }
226: .apple-table-examples.e2 th[scope=row] { padding-left: 1em; }
227: .apple-table-examples sup { line-height: 0; }
228:
1.11 mike 229: .details-example img { vertical-align: top; }
230:
1.26 mike 231: #named-character-references-table {
232: font-size: 0.6em;
233: column-width: 28em;
234: column-gap: 1em;
235: -moz-column-width: 28em;
236: -moz-column-gap: 1em;
237: -webkit-column-width: 28em;
238: -webkit-column-gap: 1em;
239: }
240: #named-character-references-table > table > tbody > tr > td:last-child { text-align: center; }
241: #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; }
242:
1.35 ! mike 243: .glyph.control { color: red; }
! 244:
1.24 mike 245: </style><style type="text/css">
1.25 mike 246: .domintro:before { display: table; margin: -1em -0.5em -0.5em auto; width: auto; content: 'This box is non-normative. Implementation requirements are given below this box.'; color: black; font-style: italic; border: solid 2px; background: white; padding: 0 0.25em; }
247: </style><link href="data:text/css," id="complete" rel="stylesheet" title="Complete specification"><link href="data:text/css,.impl%20%7B%20display:%20none;%20%7D%0Ahtml%20%7B%20border:%20solid%20yellow;%20%7D%20.domintro:before%20%7B%20display:%20none;%20%7D" id="author" rel="alternate stylesheet" title="Author documentation only"><link href="data:text/css,.impl%20%7B%20background:%20%23FFEEEE;%20%7D%20.domintro:before%20%7B%20background:%20%23FFEEEE;%20%7D" id="highlight" rel="alternate stylesheet" title="Highlight implementation requirements"><script type="text/javascript">
1.9 mike 248: function getCookie(name) {
249: var params = location.search.substr(1).split("&");
250: for (var index = 0; index < params.length; index++) {
251: if (params[index] == name)
252: return "1";
253: var data = params[index].split("=");
254: if (data[0] == name)
255: return unescape(data[1]);
256: }
257: var cookies = document.cookie.split("; ");
258: for (var index = 0; index < cookies.length; index++) {
259: var data = cookies[index].split("=");
260: if (data[0] == name)
261: return unescape(data[1]);
262: }
263: return null;
264: }
265: function load(script) {
266: var e = document.createElement('script');
267: e.setAttribute('src', 'http://www.whatwg.org/specs/web-apps/current-work/' + script + '?' + encodeURIComponent(location) + '&' + encodeURIComponent(document.referrer));
268: document.body.appendChild(e);
269: }
270: function init() {
271: if (location.search == '?slow-browser')
272: return;
273: var configUI = document.createElement('div');
274: configUI.id = 'configUI';
275: document.body.appendChild(configUI);
276: // load('reviewer.js'); // would need cross-site XHR
277: if (document.getElementById('head'))
278: load('toc.js');
279:
280: // load('updater.js'); // would need cross-site XHR
1.11 mike 281: load('dfn.js'); // doesn't support split-out specs, but, oh well.
1.9 mike 282: // load('status.js'); // would need cross-site XHR
283: if (getCookie('profile') == '1')
284: document.getElementsByTagName('h2')[0].textContent += '; load: ' + (new Date() - loadTimer) + 'ms';
285: fixBrokenLink();
286: }
1.31 mike 287: </script><link href="http://www.w3.org/StyleSheets/TR/W3C-ED" rel="stylesheet" type="text/css"><link href="common-input-element-attributes.html" title="4.10.7.2 Common input element attributes" rel="prev">
1.9 mike 288: <link href="Overview.html#contents" title="Table of contents" rel="index">
1.20 mike 289: <link href="association-of-controls-and-forms.html" title="4.10.18 Association of controls and forms" rel="next">
1.9 mike 290: </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
291: <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
292: <h1>HTML5 (Author Edition)</h1>
293: </div><div>
1.20 mike 294: <a href="common-input-element-attributes.html">← 4.10.7.2 Common input element attributes</a> –
1.9 mike 295: <a href="Overview.html#contents">Table of contents</a> –
1.20 mike 296: <a href="association-of-controls-and-forms.html">4.10.18 Association of controls and forms →</a>
297: <ol class="toc"><li><ol><li><ol><li><a href="the-button-element.html#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"><span class="secno">4.10.9 </span>The <code>select</code> element</a></li><li><a href="the-button-element.html#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"><span class="secno">4.10.11 </span>The <code>optgroup</code> element</a></li><li><a href="the-button-element.html#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"><span class="secno">4.10.13 </span>The <code>textarea</code> element</a></li><li><a href="the-button-element.html#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"><span class="secno">4.10.15 </span>The <code>output</code> element</a></li><li><a href="the-button-element.html#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"><span class="secno">4.10.17 </span>The <code>meter</code> element</a></li></ol></li></ol></li></ol></div>
1.9 mike 298:
1.30 mike 299: <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>
1.9 mike 300: <dd><a href="content-models.html#flow-content">Flow content</a>.</dd>
301: <dd><a href="content-models.html#phrasing-content">Phrasing content</a>.</dd>
302: <dd><a href="content-models.html#interactive-content">Interactive content</a>.</dd>
303: <dd><a href="forms.html#category-listed" title="category-listed">Listed</a>, <a href="forms.html#category-label" title="category-label">labelable</a>, and <a href="forms.html#category-submit" title="category-submit">submittable</a> <a href="forms.html#form-associated-element">form-associated element</a>.</dd>
304: <dt>Contexts in which this element may be used:</dt>
305: <dd>Where <a href="content-models.html#phrasing-content">phrasing content</a> is expected.</dd>
306: <dt>Content model:</dt>
307: <dd><a href="content-models.html#phrasing-content">Phrasing content</a>, but there must be no <a href="content-models.html#interactive-content">interactive content</a> descendant.</dd>
308: <dt>Content attributes:</dt>
309: <dd><a href="elements.html#global-attributes">Global attributes</a></dd>
310: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus">autofocus</a></code></dd>
311: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled">disabled</a></code></dd>
312: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form">form</a></code></dd>
313: <dd><code title="attr-fs-formaction"><a href="association-of-controls-and-forms.html#attr-fs-formaction">formaction</a></code></dd>
314: <dd><code title="attr-fs-formenctype"><a href="association-of-controls-and-forms.html#attr-fs-formenctype">formenctype</a></code></dd>
315: <dd><code title="attr-fs-formmethod"><a href="association-of-controls-and-forms.html#attr-fs-formmethod">formmethod</a></code></dd>
316: <dd><code title="attr-fs-formnovalidate"><a href="association-of-controls-and-forms.html#attr-fs-formnovalidate">formnovalidate</a></code></dd>
317: <dd><code title="attr-fs-formtarget"><a href="association-of-controls-and-forms.html#attr-fs-formtarget">formtarget</a></code></dd>
318: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name">name</a></code></dd>
319: <dd><code title="attr-button-type"><a href="#attr-button-type">type</a></code></dd>
320: <dd><code title="attr-button-value"><a href="#attr-button-value">value</a></code></dd>
321: <dt>DOM interface:</dt>
322: <dd>
323: <pre class="idl">interface <dfn id="htmlbuttonelement">HTMLButtonElement</dfn> : <a href="elements.html#htmlelement">HTMLElement</a> {
324: attribute boolean <a href="#dom-fe-autofocus" title="dom-fe-autofocus">autofocus</a>;
325: attribute boolean <a href="#dom-fe-disabled" title="dom-fe-disabled">disabled</a>;
326: readonly attribute <a href="forms.html#htmlformelement">HTMLFormElement</a> <a href="#dom-fae-form" title="dom-fae-form">form</a>;
327: attribute DOMString <a href="#dom-fs-formaction" title="dom-fs-formAction">formAction</a>;
328: attribute DOMString <a href="#dom-fs-formenctype" title="dom-fs-formEnctype">formEnctype</a>;
329: attribute DOMString <a href="#dom-fs-formmethod" title="dom-fs-formMethod">formMethod</a>;
330: attribute DOMString <a href="#dom-fs-formnovalidate" title="dom-fs-formNoValidate">formNoValidate</a>;
331: attribute DOMString <a href="#dom-fs-formtarget" title="dom-fs-formTarget">formTarget</a>;
332: attribute DOMString <a href="#dom-fe-name" title="dom-fe-name">name</a>;
333: attribute DOMString <a href="#dom-button-type" title="dom-button-type">type</a>;
334: attribute DOMString <a href="#dom-button-value" title="dom-button-value">value</a>;
335:
336: readonly attribute boolean <a href="#dom-cva-willvalidate" title="dom-cva-willValidate">willValidate</a>;
337: readonly attribute <a href="#validitystate">ValidityState</a> <a href="#dom-cva-validity" title="dom-cva-validity">validity</a>;
338: readonly attribute DOMString <a href="#dom-cva-validationmessage" title="dom-cva-validationMessage">validationMessage</a>;
339: boolean <a href="#dom-cva-checkvalidatity" title="dom-cva-checkValidatity">checkValidity</a>();
340: void <a href="#dom-cva-setcustomvalidity" title="dom-cva-setCustomValidity">setCustomValidity</a>(in DOMString error);
341:
1.19 mike 342: readonly attribute <a href="#nodelist">NodeList</a> <a href="#dom-lfe-labels" title="dom-lfe-labels">labels</a>;
1.9 mike 343: };</pre>
344: </dd>
345: </dl><p>The <code><a href="#the-button-element">button</a></code> element <a href="#represents">represents</a> a
346: button. </p><p>The element is a <a href="forms.html#concept-button" title="concept-button">button</a>.</p><p>The <dfn id="attr-button-type" title="attr-button-type"><code>type</code></dfn>
347: attribute controls the behavior of the button when it is activated.
348: It is an <a href="common-microsyntaxes.html#enumerated-attribute">enumerated attribute</a>. The following table
349: lists the keywords and states for the attribute — the keywords
350: in the left column map to the states in the cell in the second
351: column on the same row as the keyword.</p><table><thead><tr><th> Keyword
352: </th><th> State
353: </th><th> Brief description
354: </th></tr></thead><tbody><tr><td><dfn id="attr-button-type-submit" title="attr-button-type-submit"><code>submit</code></dfn>
355: </td><td><a href="#attr-button-type-submit-state" title="attr-button-type-submit-state">Submit Button</a>
356: </td><td>Submits the form.
357: </td></tr><tr><td><dfn id="attr-button-type-reset" title="attr-button-type-reset"><code>reset</code></dfn>
358: </td><td><a href="#attr-button-type-reset-state" title="attr-button-type-reset-state">Reset Button</a>
359: </td><td>Resets the form.
360: </td></tr><tr><td><dfn id="attr-button-type-button" title="attr-button-type-button"><code>button</code></dfn>
361: </td><td><a href="#attr-button-type-button-state" title="attr-button-type-button-state">Button</a>
362: </td><td>Does nothing.
363: </td></tr></tbody></table><p>The <i>missing value default</i> is the <a href="#attr-button-type-submit-state" title="attr-button-type-submit-state">Submit Button</a>
364: state.</p><p>If the <code title="attr-button-type"><a href="#attr-button-type">type</a></code> attribute is in
365: the <a href="#attr-button-type-submit-state" title="attr-button-type-submit-state">Submit Button</a>
366: state, the element is specifically a <a href="forms.html#concept-submit-button" 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">form</a></code> attribute is used to
367: explicitly associate the <code><a href="#the-button-element">button</a></code> element with its
368: <a href="association-of-controls-and-forms.html#form-owner">form owner</a>. The <code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name">name</a></code>
369: attribute represents the element's name. The <code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled">disabled</a></code> attribute is used to make
370: the control non-interactive and to prevent its value from being
371: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus">autofocus</a></code>
372: attribute controls focus. The <code title="attr-fs-formaction"><a href="association-of-controls-and-forms.html#attr-fs-formaction">formaction</a></code>, <code title="attr-fs-formenctype"><a href="association-of-controls-and-forms.html#attr-fs-formenctype">formenctype</a></code>, <code title="attr-fs-formmethod"><a href="association-of-controls-and-forms.html#attr-fs-formmethod">formmethod</a></code>, <code title="attr-fs-formnovalidate"><a href="association-of-controls-and-forms.html#attr-fs-formnovalidate">formnovalidate</a></code>, and <code title="attr-fs-formtarget"><a href="association-of-controls-and-forms.html#attr-fs-formtarget">formtarget</a></code> attributes are
373: <a href="association-of-controls-and-forms.html#attributes-for-form-submission">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">formnovalidate</a></code> attribute can
374: be used to make submit buttons that do not trigger the constraint
1.15 mike 375: validation.</p><p>The <code title="attr-fs-formaction"><a href="association-of-controls-and-forms.html#attr-fs-formaction">formaction</a></code>, <code title="attr-fs-formenctype"><a href="association-of-controls-and-forms.html#attr-fs-formenctype">formenctype</a></code>, <code title="attr-fs-formmethod"><a href="association-of-controls-and-forms.html#attr-fs-formmethod">formmethod</a></code>, <code title="attr-fs-formnovalidate"><a href="association-of-controls-and-forms.html#attr-fs-formnovalidate">formnovalidate</a></code>, and <code title="attr-fs-formtarget"><a href="association-of-controls-and-forms.html#attr-fs-formtarget">formtarget</a></code> must not be specified
376: if the element's <code title="attr-button-type"><a href="#attr-button-type">type</a></code>
377: attribute is not in the <a href="#attr-button-type-submit-state" title="attr-button-type-submit-state">Submit Button</a>
378: state.</p><p>The <dfn id="attr-button-value" title="attr-button-value"><code>value</code></dfn>
1.9 mike 379: attribute gives the element's value for the purposes of form
1.10 mike 380: submission. The element's <a href="#concept-fe-value" title="concept-fe-value">value</a> is the value of the element's
381: <code title="attr-button-value"><a href="#attr-button-value">value</a></code> attribute, if there is
382: one, or the empty string otherwise.</p><p class="note">A button (and its value) is only included in the
1.9 mike 383: form submission if the button itself was used to initiate the form
384: submission.</p><div class="example">
385:
386: <p>The following button is labeled "Show hint" and pops up a dialog
387: box when activated:</p>
388:
389: <pre><button type=button
390: onclick="alert('This 15-20 minute piece was composed by George Gershwin.')">
391: Show hint
392: </button></pre>
393:
1.30 mike 394: </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>
1.9 mike 395: <dd><a href="content-models.html#flow-content">Flow content</a>.</dd>
396: <dd><a href="content-models.html#phrasing-content">Phrasing content</a>.</dd>
397: <dd><a href="content-models.html#interactive-content">Interactive content</a>.</dd>
398: <dd><a href="forms.html#category-listed" title="category-listed">Listed</a>, <a href="forms.html#category-label" title="category-label">labelable</a>, <a href="forms.html#category-submit" title="category-submit">submittable</a>, and <a href="forms.html#category-reset" title="category-reset">resettable</a> <a href="forms.html#form-associated-element">form-associated element</a>.</dd>
399: <dt>Contexts in which this element may be used:</dt>
400: <dd>Where <a href="content-models.html#phrasing-content">phrasing content</a> is expected.</dd>
401: <dt>Content model:</dt>
402: <dd>Zero or more <code><a href="#the-option-element">option</a></code> or <code><a href="#the-optgroup-element">optgroup</a></code> elements.</dd>
403: <dt>Content attributes:</dt>
404: <dd><a href="elements.html#global-attributes">Global attributes</a></dd>
405: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus">autofocus</a></code></dd>
406: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled">disabled</a></code></dd>
407: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form">form</a></code></dd>
408: <dd><code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code></dd>
409: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name">name</a></code></dd>
410: <dd><code title="attr-select-size"><a href="#attr-select-size">size</a></code></dd>
411: <dt>DOM interface:</dt>
412: <dd>
413: <pre class="idl">interface <dfn id="htmlselectelement">HTMLSelectElement</dfn> : <a href="elements.html#htmlelement">HTMLElement</a> {
414: attribute boolean <a href="#dom-fe-autofocus" title="dom-fe-autofocus">autofocus</a>;
415: attribute boolean <a href="#dom-fe-disabled" title="dom-fe-disabled">disabled</a>;
416: readonly attribute <a href="forms.html#htmlformelement">HTMLFormElement</a> <a href="#dom-fae-form" title="dom-fae-form">form</a>;
417: attribute boolean <a href="#dom-select-multiple" title="dom-select-multiple">multiple</a>;
418: attribute DOMString <a href="#dom-fe-name" title="dom-fe-name">name</a>;
419: attribute unsigned long <a href="#dom-select-size" title="dom-select-size">size</a>;
420:
421: readonly attribute DOMString <a href="#dom-select-type" title="dom-select-type">type</a>;
422:
423: readonly attribute <a href="urls.html#htmloptionscollection">HTMLOptionsCollection</a> <a href="#dom-select-options" title="dom-select-options">options</a>;
424: attribute unsigned long <a href="#dom-select-length" title="dom-select-length">length</a>;
425: caller getter any <a href="#dom-select-item" title="dom-select-item">item</a>(in unsigned long index);
426: caller getter any <a href="#dom-select-nameditem" title="dom-select-namedItem">namedItem</a>(in DOMString name);
427: void <a href="#dom-select-add" title="dom-select-add">add</a>(in <a href="elements.html#htmlelement">HTMLElement</a> element, in optional <a href="elements.html#htmlelement">HTMLElement</a> before);
428: void <a href="#dom-select-add" title="dom-select-add">add</a>(in <a href="elements.html#htmlelement">HTMLElement</a> element, in long before);
429: void <a href="#dom-select-remove" title="dom-select-remove">remove</a>(in long index);
430:
431: readonly attribute <a href="urls.html#htmlcollection">HTMLCollection</a> <a href="#dom-select-selectedoptions" title="dom-select-selectedOptions">selectedOptions</a>;
432: attribute long <a href="#dom-select-selectedindex" title="dom-select-selectedIndex">selectedIndex</a>;
433: attribute DOMString <a href="#dom-select-value" title="dom-select-value">value</a>;
434:
435: readonly attribute boolean <a href="#dom-cva-willvalidate" title="dom-cva-willValidate">willValidate</a>;
436: readonly attribute <a href="#validitystate">ValidityState</a> <a href="#dom-cva-validity" title="dom-cva-validity">validity</a>;
437: readonly attribute DOMString <a href="#dom-cva-validationmessage" title="dom-cva-validationMessage">validationMessage</a>;
438: boolean <a href="#dom-cva-checkvalidatity" title="dom-cva-checkValidatity">checkValidity</a>();
439: void <a href="#dom-cva-setcustomvalidity" title="dom-cva-setCustomValidity">setCustomValidity</a>(in DOMString error);
440:
1.19 mike 441: readonly attribute <a href="#nodelist">NodeList</a> <a href="#dom-lfe-labels" title="dom-lfe-labels">labels</a>;
1.9 mike 442: };</pre>
443: </dd>
444: </dl><!-- Proposals for v2:
445: * <select value=""> as an alternative to <option selected>
446: http://developers.slashdot.org/comments.pl?sid=426306&cid=22142072
1.11 mike 447: <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 448: src="/js/flightcity.js"></SCRIPT></select> which is the kind of thing that could be much simpler with <select value="PEK">
449: * a way to make the <select> not have a default value at all (ack
450: or to have a "placeholer" like value that doesn't count as a value being selected but shows a prompt until a value is selected
451: * once we can have no default, a way to require="" a value.
452: ack Weston Ruter: http://weston.ruter.net/projects/test-cases/html-select-element/
453: q.v. http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2008-November/017583.html
454: --><p>The <code><a href="#the-select-element">select</a></code> element represents a control for
455: selecting amongst a set of options.</p><p>The <dfn id="attr-select-multiple" title="attr-select-multiple"><code>multiple</code></dfn>
456: attribute is a <a href="common-microsyntaxes.html#boolean-attribute">boolean attribute</a>. If the attribute is
457: present, then the <code><a href="#the-select-element">select</a></code> element
458: <a href="#represents">represents</a> a control for selecting zero or more options
459: from the <a href="#concept-select-option-list" title="concept-select-option-list">list of
460: options</a>. If the attribute is absent, then the
461: <code><a href="#the-select-element">select</a></code> element <a href="#represents">represents</a> a control for
462: selecting a single option from the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>.</p><p>The <dfn id="concept-select-option-list" title="concept-select-option-list">list of options</dfn>
463: for a <code><a href="#the-select-element">select</a></code> element consists of all the
464: <code><a href="#the-option-element">option</a></code> element children of the <code><a href="#the-select-element">select</a></code>
465: element, and all the <code><a href="#the-option-element">option</a></code> element children of all the
466: <code><a href="#the-optgroup-element">optgroup</a></code> element children of the <code><a href="#the-select-element">select</a></code>
467: element, in <a href="infrastructure.html#tree-order">tree order</a>.</p><p>The <dfn id="attr-select-size" title="attr-select-size"><code>size</code></dfn>
468: 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">size</a></code> attribute, if specified, must
469: have a value that is a <a href="common-microsyntaxes.html#valid-non-negative-integer">valid non-negative integer</a>
470: greater than zero. If the <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code> attribute is present,
471: then the <code title="attr-input-size"><a href="common-input-element-attributes.html#attr-input-size">size</a></code> attribute's
472: default value is 4. If the <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code> attribute is absent,
473: then the <code title="attr-input-size"><a href="common-input-element-attributes.html#attr-input-size">size</a></code> attribute's
474: default value is 1.</p><p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form">form</a></code> attribute is used to
475: explicitly associate the <code><a href="#the-select-element">select</a></code> element with its
476: <a href="association-of-controls-and-forms.html#form-owner">form owner</a>. The <code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name">name</a></code>
477: attribute represents the element's name. The <code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled">disabled</a></code> attribute is used to make
478: the control non-interactive and to prevent its value from being
479: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus">autofocus</a></code>
480: attribute controls focus.</p><dl class="domintro"><dt><var title="">select</var> . <code title="dom-select-type"><a href="#dom-select-type">type</a></code></dt>
481:
482: <dd>
483:
484: <p>Returns "<code title="">select-multiple</code>" if the element
485: has a <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
486: attribute, and "<code title="">select-one</code>"
487: otherwise.</p>
488:
489: </dd>
490:
491: <dt><var title="">select</var> . <code title="dom-select-options"><a href="#dom-select-options">options</a></code></dt>
492:
493: <dd>
494:
495: <p>Returns an <code><a href="urls.html#htmloptionscollection">HTMLOptionsCollection</a></code> of the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>.</p>
496:
497: </dd>
498:
499: <dt><var title="">select</var> . <code title="dom-select-length"><a href="#dom-select-length">length</a></code> [ = <var title="">value</var> ]</dt>
500: <dd>
501: <p>Returns the number of elements in the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>.</p>
502: <p>When set to a smaller number, truncates the number of <code><a href="#the-option-element">option</a></code> elements in the <code><a href="#the-select-element">select</a></code>.</p>
503: <p>When set to a greater number, adds new blank <code><a href="#the-option-element">option</a></code> elements to the <code><a href="#the-select-element">select</a></code>.</p>
504: </dd>
505:
506: <dt><var title="">element</var> = <var title="">select</var> . <code title="dom-select-item"><a href="#dom-select-item">item</a></code>(<var title="">index</var>)</dt>
507: <dt><var title="">select</var>[<var title="">index</var>]</dt>
508: <dt><var title="">select</var>(<var title="">index</var>)</dt>
509: <dd>
510: <p>Returns the item with index <var title="">index</var> from the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>. The items are sorted in <a href="infrastructure.html#tree-order">tree order</a>.</p>
511: <p>Returns null if <var title="">index</var> is out of range.</p>
512: </dd>
513:
514: <dt><var title="">element</var> = <var title="">select</var> . <code title="dom-select-item"><a href="#dom-select-item">namedItem</a></code>(<var title="">name</var>)</dt>
515: <dt><var title="">select</var>[<var title="">name</var>]</dt>
516: <dt><var title="">select</var>(<var title="">name</var>)</dt>
517: <dd>
1.28 mike 518: <p>Returns the item with ID or <code title="attr-option-name"><a href="obsolete.html#attr-option-name">name</a></code> <var title="">name</var> from the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>.</p>
1.19 mike 519: <p>If there are multiple matching items, then a <code><a href="#nodelist">NodeList</a></code> object containing all those elements is returned.</p>
1.9 mike 520: <p>Returns null if no element with that ID could be found.</p>
521: </dd>
522:
523: <dt><var title="">select</var> . <code title="dom-select-add"><a href="#dom-select-add">add</a></code>(<var title="">element</var> [, <var title="">before</var> ])</dt>
524: <dd>
525: <p>Inserts <var title="">element</var> before the node given by <var title="">before</var>.</p>
526: <p>The <var title="">before</var> argument can be a number, in
527: which case <var title="">element</var> is inserted before the item
528: with that number, or an element from the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>, in
529: which case <var title="">element</var> is inserted before that
530: element.</p>
531: <p>If <var title="">before</var> is omitted, null, or a number out
532: of range, then <var title="">element</var> will be added at the
533: end of the list.</p>
534: <p>This method will throw a <code><a href="urls.html#hierarchy_request_err">HIERARCHY_REQUEST_ERR</a></code>
535: exception if <var title="">element</var> is an ancestor of the
536: element into which it is to be inserted. If <var title="">element</var> is not an <code><a href="#the-option-element">option</a></code> or
537: <code><a href="#the-optgroup-element">optgroup</a></code> element, then the method does nothing.</p>
538: </dd>
539:
540: <dt><var title="">select</var> . <code title="dom-select-selectedOptions"><a href="#dom-select-selectedoptions">selectedOptions</a></code></dt>
541:
542: <dd>
543:
544: <p>Returns an <code><a href="urls.html#htmlcollection">HTMLCollection</a></code> of the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a> that are
545: selected.</p>
546:
547: </dd>
548:
549: <dt><var title="">select</var> . <code title="dom-select-selectedIndex"><a href="#dom-select-selectedindex">selectedIndex</a></code> [ = <var title="">value</var> ]</dt>
550:
551: <dd>
552:
553: <p>Returns the index of the first selected item, if any, or
554: −1 if there is no selected item.</p>
555:
556: <p>Can be set, to change the selection.</p>
557:
558: </dd>
559:
560: <dt><var title="">select</var> . <code title="dom-select-value"><a href="#dom-select-value">value</a></code> [ = <var title="">value</var> ]</dt>
561:
562: <dd>
563:
564: <p>Returns the <a href="#concept-fe-value" title="concept-fe-value">value</a> of the
565: first selected item, if any, or the empty string if there is no
566: selected item.</p>
567:
568: <p>Can be set, to change the selection.</p>
569:
570: </dd>
571:
572: </dl><div class="example">
573:
574: <p>The following example shows how a <code><a href="#the-select-element">select</a></code> element
575: can be used to offer the user with a set of options from which the
576: user can select a single option. The default option is
577: preselected.</p>
578:
579: <pre><p>
580: <label for="unittype">Select unit type:</label>
581: <select id="unittype" name="unittype">
582: <option value="1"> Miner </option>
583: <option value="2"> Puffer </option>
584: <option value="3" selected> Snipey </option>
585: <option value="4"> Max </option>
586: <option value="5"> Firebot </option>
587: </select>
588: </p></pre>
589:
590: </div><div class="example">
591:
592: <p>Here, the user is offered a set of options from which he can
593: select any number. By default, all five options are selected.</p>
594:
595: <pre><p>
596: <label for="allowedunits">Select unit types to enable on this map:</label>
597: <select id="allowedunits" name="allowedunits" multiple>
598: <option value="1" selected> Miner </option>
599: <option value="2" selected> Puffer </option>
600: <option value="3" selected> Snipey </option>
601: <option value="4" selected> Max </option>
602: <option value="5" selected> Firebot </option>
603: </select>
604: </p></pre>
605:
1.30 mike 606: </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>
1.9 mike 607: <dd><a href="content-models.html#flow-content">Flow content</a>.</dd>
608: <dd><a href="content-models.html#phrasing-content">Phrasing content</a>.</dd>
609: <dt>Contexts in which this element may be used:</dt>
610: <dd>Where <a href="content-models.html#phrasing-content">phrasing content</a> is expected.</dd>
611: <dt>Content model:</dt>
612: <dd>Either: <a href="content-models.html#phrasing-content">phrasing content</a>.</dd>
613: <dd>Or: Zero or more <code><a href="#the-option-element">option</a></code> elements.</dd>
614: <dt>Content attributes:</dt>
615: <dd><a href="elements.html#global-attributes">Global attributes</a></dd>
616: <dt>DOM interface:</dt>
617: <dd>
618: <pre class="idl">interface <dfn id="htmldatalistelement">HTMLDataListElement</dfn> : <a href="elements.html#htmlelement">HTMLElement</a> {
619: readonly attribute <a href="urls.html#htmlcollection">HTMLCollection</a> <a href="#dom-datalist-options" title="dom-datalist-options">options</a>;
620: };</pre>
621: </dd>
622: </dl><p>The <code><a href="#the-datalist-element">datalist</a></code> element represents a set of
623: <code><a href="#the-option-element">option</a></code> elements that represent predefined options for
624: other controls. The contents of the element represents fallback
625: content for legacy user agents, intermixed with <code><a href="#the-option-element">option</a></code>
626: elements that represent the predefined options. In the rendering,
627: the <code><a href="#the-datalist-element">datalist</a></code> element <a href="#represents">represents</a>
628: nothing.</p><p>The <code><a href="#the-datalist-element">datalist</a></code> element is hooked up to an
629: <code><a href="the-input-element.html#the-input-element">input</a></code> element using the <code title="attr-input-list"><a href="common-input-element-attributes.html#attr-input-list">list</a></code> attribute on the
630: <code><a href="the-input-element.html#the-input-element">input</a></code> element. <!-- v2DATAGRID The
631: <code>datalist</code> element can also be used with a
632: <code>datagrid</code> element, as the source of autocompletion hints
633: for <code title="datagrid-type-editable">editable</code>
634: cells. --></p><p>Each <code><a href="#the-option-element">option</a></code> element that is a descendant of the
635: <code><a href="#the-datalist-element">datalist</a></code> element, that is not <a href="#concept-option-disabled" title="concept-option-disabled">disabled</a>, and whose <a href="#concept-option-value" title="concept-option-value">value</a> is a string that isn't the
636: empty string, represents a suggestion. Each suggestion has a <a href="#concept-option-value" title="concept-option-value">value</a> and a <a href="#concept-option-label" title="concept-option-label">label</a>.
637:
638: </p><dl class="domintro"><dt><var title="">datalist</var> . <code title="dom-datalist-options"><a href="#dom-datalist-options">options</a></code></dt>
639:
640: <dd>
641: <p>Returns an <code><a href="urls.html#htmlcollection">HTMLCollection</a></code> of the <code>options</code> elements of the table.</p>
642: </dd>
643:
1.30 mike 644: </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 645: <dd>None.</dd>
646: <dt>Contexts in which this element may be used:</dt>
647: <dd>As a child of a <code><a href="#the-select-element">select</a></code> element.</dd>
648: <dt>Content model:</dt>
649: <dd>Zero or more <code><a href="#the-option-element">option</a></code> elements.</dd>
650: <dt>Content attributes:</dt>
651: <dd><a href="elements.html#global-attributes">Global attributes</a></dd>
652: <dd><code title="attr-optgroup-disabled"><a href="#attr-optgroup-disabled">disabled</a></code></dd>
653: <dd><code title="attr-optgroup-label"><a href="#attr-optgroup-label">label</a></code></dd>
654: <dt>DOM interface:</dt>
655: <dd>
656: <pre class="idl">interface <dfn id="htmloptgroupelement">HTMLOptGroupElement</dfn> : <a href="elements.html#htmlelement">HTMLElement</a> {
657: attribute boolean <a href="#dom-optgroup-disabled" title="dom-optgroup-disabled">disabled</a>;
658: attribute DOMString <a href="#dom-optgroup-label" title="dom-optgroup-label">label</a>;
659: };</pre>
660: </dd>
661: </dl><!-- v2: make optgroups selectable if they have a value. --><p>The <code><a href="#the-optgroup-element">optgroup</a></code> element <a href="#represents">represents</a> a group of
662: <code><a href="#the-option-element">option</a></code> elements with a common label.</p><p>The element's group of <code><a href="#the-option-element">option</a></code> elements consists of
663: the <code><a href="#the-option-element">option</a></code> elements that are children of the
664: <code><a href="#the-optgroup-element">optgroup</a></code> element.</p><p>The <dfn id="attr-optgroup-disabled" title="attr-optgroup-disabled"><code>disabled</code></dfn> attribute
665: is a <a href="common-microsyntaxes.html#boolean-attribute">boolean attribute</a> and can be used to <a href="#concept-option-disabled" title="concept-option-disabled">disable</a> a group of
666: <code><a href="#the-option-element">option</a></code> elements together.</p><p>The <dfn id="attr-optgroup-label" title="attr-optgroup-label"><code>label</code></dfn>
667: attribute must be specified. Its value gives the name of the group,
668: for the purposes of the user interface. </p><div class="example">
669:
670: <p>The following snippet shows how a set of lessons from three
671: courses could be offered in a <code><a href="#the-select-element">select</a></code> drop-down
672: widget:</p>
673:
674: <pre><form action="courseselector.dll" method="get">
675: <p>Which course would you like to watch today?
676: <p><label>Course:
677: <select name="c">
678: <optgroup label="8.01 Physics I: Classical Mechanics">
679: <option value="8.01.1">Lecture 01: Powers of Ten
680: <option value="8.01.2">Lecture 02: 1D Kinematics
681: <option value="8.01.3">Lecture 03: Vectors
682: <optgroup label="8.02 Electricity and Magnestism">
683: <option value="8.02.1">Lecture 01: What holds our world together?
684: <option value="8.02.2">Lecture 02: Electric Field
685: <option value="8.02.3">Lecture 03: Electric Flux
686: <optgroup label="8.03 Physics III: Vibrations and Waves">
687: <option value="8.03.1">Lecture 01: Periodic Phenomenon
688: <option value="8.03.2">Lecture 02: Beats
689: <option value="8.03.3">Lecture 03: Forced Oscillations with Damping
690: </select>
691: </label>
692: <p><input type=submit value="▶ Play">
693: </form></pre>
694:
1.30 mike 695: </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 696: <dd>None.</dd>
697: <dt>Contexts in which this element may be used:</dt>
698: <dd>As a child of a <code><a href="#the-select-element">select</a></code> element.</dd>
699: <dd>As a child of a <code><a href="#the-datalist-element">datalist</a></code> element.</dd>
700: <dd>As a child of an <code><a href="#the-optgroup-element">optgroup</a></code> element.</dd>
701: <dt>Content model:</dt>
702: <dd><a href="content-models.html#text-content" title="text content">Text</a>.</dd>
703: <dt>Content attributes:</dt>
704: <dd><a href="elements.html#global-attributes">Global attributes</a></dd>
705: <dd><code title="attr-option-disabled"><a href="#attr-option-disabled">disabled</a></code></dd>
706: <dd><code title="attr-option-label"><a href="#attr-option-label">label</a></code></dd>
707: <dd><code title="attr-option-selected"><a href="#attr-option-selected">selected</a></code></dd>
708: <dd><code title="attr-option-value"><a href="#attr-option-value">value</a></code></dd>
709: <dt>DOM interface:</dt>
710: <dd>
711: <pre class="idl">[NamedConstructor=<a href="#dom-option" title="dom-option">Option</a>(),
712: NamedConstructor=<a href="#dom-option-t" title="dom-option-t">Option</a>(in DOMString text),
713: NamedConstructor=<a href="#dom-option-tv" title="dom-option-tv">Option</a>(in DOMString text, in DOMString value),
714: NamedConstructor=<a href="#dom-option-tvd" title="dom-option-tvd">Option</a>(in DOMString text, in DOMString value, in boolean defaultSelected),
715: NamedConstructor=<a href="#dom-option-tvds" title="dom-option-tvds">Option</a>(in DOMString text, in DOMString value, in boolean defaultSelected, in boolean selected)]
716: interface <dfn id="htmloptionelement">HTMLOptionElement</dfn> : <a href="elements.html#htmlelement">HTMLElement</a> {
717: attribute boolean <a href="#dom-option-disabled" title="dom-option-disabled">disabled</a>;
718: readonly attribute <a href="forms.html#htmlformelement">HTMLFormElement</a> <a href="#dom-option-form" title="dom-option-form">form</a>;
719: attribute DOMString <a href="#dom-option-label" title="dom-option-label">label</a>;
720: attribute boolean <a href="#dom-option-defaultselected" title="dom-option-defaultSelected">defaultSelected</a>;
721: attribute boolean <a href="#dom-option-selected" title="dom-option-selected">selected</a>;
722: attribute DOMString <a href="#dom-option-value" title="dom-option-value">value</a>;
723:
724: attribute DOMString <a href="#dom-option-text" title="dom-option-text">text</a>;
725: readonly attribute long <a href="#dom-option-index" title="dom-option-index">index</a>;
726: };</pre>
727: </dd>
728: </dl><p>The <code><a href="#the-option-element">option</a></code> element <a href="#represents">represents</a> an option
729: in a <code><a href="#the-select-element">select</a></code> element or as part of a list of suggestions
730: in a <code><a href="#the-datalist-element">datalist</a></code> element.</p><p>The <dfn id="attr-option-disabled" title="attr-option-disabled"><code>disabled</code></dfn>
731: attribute is a <a href="common-microsyntaxes.html#boolean-attribute">boolean attribute</a>. An
732: <code><a href="#the-option-element">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">disabled</a></code> attribute is present or
733: if it is a child of an <code><a href="#the-optgroup-element">optgroup</a></code> element whose <code title="attr-optgroup-disabled"><a href="#attr-optgroup-disabled">disabled</a></code> attribute is
734: present.</p><p>The <dfn id="attr-option-label" title="attr-option-label"><code>label</code></dfn>
735: 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">option</a></code>
736: element is the value of the <code title="attr-option-label"><a href="#attr-option-label">label</a></code> attribute, if there is one,
1.19 mike 737: or the <code><a href="#textcontent">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>
1.9 mike 738: 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">option</a></code>
739: element is the value of the <code title="attr-option-value"><a href="#attr-option-value">value</a></code> attribute, if there is one,
1.19 mike 740: or the <code><a href="#textcontent">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>
1.9 mike 741: attribute represents the default <a href="#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> of the
1.33 mike 742: element.</p><p>A <code><a href="#the-select-element">select</a></code> element whose <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code> attribute is not
743: specified must not have more than one descendant <code><a href="#the-option-element">option</a></code>
744: element with its <code title="attr-option-selected"><a href="#attr-option-selected">selected</a></code>
745: attribute set.</p><dl class="domintro"><dt><var title="">option</var> . <code title="dom-option-selected"><a href="#dom-option-selected">selected</a></code></dt>
1.9 mike 746:
747: <dd>
748:
749: <p>Returns true if the element is selected, and false otherwise.</p>
750:
751: </dd>
752:
753: <dt><var title="">option</var> . <code title="dom-option-index"><a href="#dom-option-index">index</a></code></dt>
754:
755: <dd>
756:
757: <p>Returns the index of the element in its <code><a href="#the-select-element">select</a></code>
758: element's <code title="dom-select-options"><a href="#dom-select-options">options</a></code>
759: list.</p>
760:
761: </dd>
762:
763: <dt><var title="">option</var> . <code title="dom-option-form"><a href="#dom-option-form">form</a></code></dt>
764:
765: <dd>
766:
767: <p>Returns the element's <code><a href="forms.html#the-form-element">form</a></code> element, if any, or
768: null otherwise.</p>
769:
770: </dd>
771:
1.11 mike 772: <dt><var title="">option</var> . <code title="dom-option-text"><a href="#dom-option-text">text</a></code></dt>
773:
774: <dd>
775:
1.19 mike 776: <p>Same as <code><a href="#textcontent">textContent</a></code>.</p>
1.11 mike 777:
778: </dd>
779:
1.9 mike 780: <dt><var title="">option</var> = new <code title="dom-option"><a href="#dom-option">Option</a></code>( [ <var title="">text</var> [, <var title="">value</var> [, <var title="">defaultSelected</var> [, <var title="">selected</var> ] ] ] ] )</dt>
781:
782: <dd>
783:
784: <p>Returns a new <code><a href="#the-option-element">option</a></code> element.</p>
785:
786: <p>The <var title="">text</var> argument sets the contents of the element.</p>
787: <p>The <var title="">value</var> argument sets the <code title="attr-option-value"><a href="#attr-option-value">value</a></code> attribute.</p>
788: <p>The <var title="">defaultSelected</var> argument sets the <code title="attr-option-selected"><a href="#attr-option-selected">selected</a></code> attribute.</p>
789: <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>
790:
791: </dd>
792:
1.30 mike 793: </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>
1.9 mike 794: <dd><a href="content-models.html#flow-content">Flow content</a>.</dd>
795: <dd><a href="content-models.html#phrasing-content">Phrasing content</a>.</dd>
796: <dd><a href="content-models.html#interactive-content">Interactive content</a>.</dd>
797: <dd><a href="forms.html#category-listed" title="category-listed">Listed</a>, <a href="forms.html#category-label" title="category-label">labelable</a>, <a href="forms.html#category-submit" title="category-submit">submittable</a>, and <a href="forms.html#category-reset" title="category-reset">resettable</a> <a href="forms.html#form-associated-element">form-associated element</a>.</dd>
798: <dt>Contexts in which this element may be used:</dt>
799: <dd>Where <a href="content-models.html#phrasing-content">phrasing content</a> is expected.</dd>
800: <dt>Content model:</dt>
801: <dd><a href="content-models.html#text-content" title="text content">Text</a>.</dd>
802: <dt>Content attributes:</dt>
803: <dd><a href="elements.html#global-attributes">Global attributes</a></dd>
804: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus">autofocus</a></code></dd>
805: <dd><code title="attr-textarea-cols"><a href="#attr-textarea-cols">cols</a></code></dd>
806: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled">disabled</a></code></dd>
807: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form">form</a></code></dd>
808: <dd><code title="attr-textarea-maxlength"><a href="#attr-textarea-maxlength">maxlength</a></code></dd>
809: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name">name</a></code></dd>
810: <dd><code title="attr-textarea-placeholder"><a href="#attr-textarea-placeholder">placeholder</a></code></dd>
811: <dd><code title="attr-textarea-readonly"><a href="#attr-textarea-readonly">readonly</a></code></dd>
812: <dd><code title="attr-textarea-required"><a href="#attr-textarea-required">required</a></code></dd>
813: <dd><code title="attr-textarea-rows"><a href="#attr-textarea-rows">rows</a></code></dd>
814: <dd><code title="attr-textarea-wrap"><a href="#attr-textarea-wrap">wrap</a></code></dd>
815: <dt>DOM interface:</dt>
816: <dd>
817: <pre class="idl">interface <dfn id="htmltextareaelement">HTMLTextAreaElement</dfn> : <a href="elements.html#htmlelement">HTMLElement</a> {
818: attribute boolean <a href="#dom-fe-autofocus" title="dom-fe-autofocus">autofocus</a>;
819: attribute unsigned long <a href="#dom-textarea-cols" title="dom-textarea-cols">cols</a>;
820: attribute boolean <a href="#dom-fe-disabled" title="dom-fe-disabled">disabled</a>;
821: readonly attribute <a href="forms.html#htmlformelement">HTMLFormElement</a> <a href="#dom-fae-form" title="dom-fae-form">form</a>;
822: attribute long <a href="#dom-textarea-maxlength" title="dom-textarea-maxLength">maxLength</a>;
823: attribute DOMString <a href="#dom-fe-name" title="dom-fe-name">name</a>;
824: attribute DOMString <a href="#dom-textarea-placeholder" title="dom-textarea-placeholder">placeholder</a>;
825: attribute boolean <a href="#dom-textarea-readonly" title="dom-textarea-readOnly">readOnly</a>;
826: attribute boolean <a href="#dom-textarea-required" title="dom-textarea-required">required</a>;
827: attribute unsigned long <a href="#dom-textarea-rows" title="dom-textarea-rows">rows</a>;
828: attribute DOMString <a href="#dom-textarea-wrap" title="dom-textarea-wrap">wrap</a>;
829:
830: readonly attribute DOMString <a href="#dom-textarea-type" title="dom-textarea-type">type</a>;
831: attribute DOMString <a href="#dom-textarea-defaultvalue" title="dom-textarea-defaultValue">defaultValue</a>;
832: attribute DOMString <a href="#dom-textarea-value" title="dom-textarea-value">value</a>;
833: readonly attribute unsigned long <a href="#dom-textarea-textlength" title="dom-textarea-textLength">textLength</a>;
834:
835: readonly attribute boolean <a href="#dom-cva-willvalidate" title="dom-cva-willValidate">willValidate</a>;
836: readonly attribute <a href="#validitystate">ValidityState</a> <a href="#dom-cva-validity" title="dom-cva-validity">validity</a>;
837: readonly attribute DOMString <a href="#dom-cva-validationmessage" title="dom-cva-validationMessage">validationMessage</a>;
838: boolean <a href="#dom-cva-checkvalidatity" title="dom-cva-checkValidatity">checkValidity</a>();
839: void <a href="#dom-cva-setcustomvalidity" title="dom-cva-setCustomValidity">setCustomValidity</a>(in DOMString error);
840:
1.19 mike 841: readonly attribute <a href="#nodelist">NodeList</a> <a href="#dom-lfe-labels" title="dom-lfe-labels">labels</a>;
1.9 mike 842:
843: void <a href="#dom-textarea-input-select" title="dom-textarea/input-select">select</a>();
844: attribute unsigned long <a href="#dom-textarea-input-selectionstart" title="dom-textarea/input-selectionStart">selectionStart</a>;
845: attribute unsigned long <a href="#dom-textarea-input-selectionend" title="dom-textarea/input-selectionEnd">selectionEnd</a>;
846: void <a href="#dom-textarea-input-setselectionrange" title="dom-textarea/input-setSelectionRange">setSelectionRange</a>(in unsigned long start, in unsigned long end);
847: };</pre>
848: </dd>
849: </dl><p>The <code><a href="#the-textarea-element">textarea</a></code> element <a href="#represents">represents</a> a
850: multiline plain text edit control. The contents of the control represent the
851: control's default value.</p><p>The <dfn id="attr-textarea-readonly" title="attr-textarea-readonly"><code>readonly</code></dfn> attribute
852: is a <a href="common-microsyntaxes.html#boolean-attribute">boolean attribute</a> used to control whether the text
853: can be edited by the user or not.</p><p>The <dfn id="attr-textarea-cols" title="attr-textarea-cols"><code>cols</code></dfn>
854: attribute specifies the expected maximum number of characters per
855: line. If the <code title="attr-textarea-cols"><a href="#attr-textarea-cols">cols</a></code> attribute
856: is specified, its value must be a <a href="common-microsyntaxes.html#valid-non-negative-integer">valid non-negative
857: integer</a> greater than zero. </p><p>The <dfn id="attr-textarea-rows" title="attr-textarea-rows"><code>rows</code></dfn>
858: attribute specifies the number of lines to show. If the <code title="attr-textarea-rows"><a href="#attr-textarea-rows">rows</a></code> attribute is specified, its
859: value must be a <a href="common-microsyntaxes.html#valid-non-negative-integer">valid non-negative integer</a> greater than
860: zero. </p><p>The <dfn id="attr-textarea-wrap" title="attr-textarea-wrap"><code>wrap</code></dfn>
861: attribute is an <a href="common-microsyntaxes.html#enumerated-attribute">enumerated attribute</a> with two keywords
862: and states: the <dfn id="attr-textarea-wrap-soft" title="attr-textarea-wrap-soft"><code>soft</code></dfn> keyword
863: which maps to the <dfn id="attr-textarea-wrap-soft-state" title="attr-textarea-wrap-soft-state">Soft</dfn> state, and the
864: <dfn id="attr-textarea-wrap-hard" title="attr-textarea-wrap-hard"><code>hard</code></dfn> keyword
865: which maps to the <dfn id="attr-textarea-wrap-hard-state" title="attr-textarea-wrap-hard-state">Hard</dfn> state. The
866: <i>missing value default</i> is the <a href="#attr-textarea-wrap-soft-state" 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">wrap</a></code>
867: attribute is in the <a href="#attr-textarea-wrap-hard-state" title="attr-textarea-wrap-hard-state">Hard</a> state, the <code title="attr-textarea-cols"><a href="#attr-textarea-cols">cols</a></code> attribute must be
868: specified.</p><!-- attr-textarea-wrap-off (attr-textarea-wrap-off-state): not
869: conforming; turns off the rendering of wrapping but otherwise acts
870: like 'soft' --><p>The <dfn id="attr-textarea-maxlength" title="attr-textarea-maxlength"><code>maxlength</code></dfn>
871: attribute is a <a href="association-of-controls-and-forms.html#attr-fe-maxlength" title="attr-fe-maxlength">form control <code title="">maxlength</code> attribute</a> controlled by the
872: <code><a href="#the-textarea-element">textarea</a></code> element's <a href="#concept-textarea-dirty" title="concept-textarea-dirty">dirty value flag</a>.</p><p>If the <code><a href="#the-textarea-element">textarea</a></code> element has a <a href="association-of-controls-and-forms.html#maximum-allowed-value-length">maximum allowed
873: value length</a>, then the element's children must be such that
874: the <a href="#code-point-length">code-point length</a> of the value of the element's
1.19 mike 875: <code><a href="#textcontent">textContent</a></code> IDL attribute is equal to or less than the
1.9 mike 876: element's <a href="association-of-controls-and-forms.html#maximum-allowed-value-length">maximum allowed value length</a>.</p><p>The <dfn id="attr-textarea-required" title="attr-textarea-required"><code>required</code></dfn> attribute
877: is a <a href="common-microsyntaxes.html#boolean-attribute">boolean attribute</a>. When specified, the user will
878: 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>
879: attribute represents a hint (a word or short phrase) intended to aid
880: the user with data entry. A hint could be a sample value or a brief
881: description of the expected format. The attribute, if specified,
882: must have a value that contains no U+000A LINE FEED (LF) or U+000D
883: 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">title</a></code> attribute is more appropriate.</p><p>The <code title="attr-textarea-placeholder"><a href="#attr-textarea-placeholder">placeholder</a></code>
884: attribute should not be used as an alternative to a
885: <code><a href="forms.html#the-label-element">label</a></code>.</p><p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form">form</a></code> attribute is used to
886: explicitly associate the <code><a href="#the-textarea-element">textarea</a></code> element with its
887: <a href="association-of-controls-and-forms.html#form-owner">form owner</a>. The <code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name">name</a></code>
888: attribute represents the element's name. The <code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled">disabled</a></code> attribute is used to make
889: the control non-interactive and to prevent its value from being
890: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus">autofocus</a></code>
891: attribute controls focus.</p><dl class="domintro"><dt><var title="">textarea</var> . <code title="attr-textarea-type">type</code></dt>
892:
893: <dd>
894:
895: <p>Returns the string "<code title="">textarea</code>".</p>
896:
897: </dd>
898:
899: <dt><var title="">textarea</var> . <code title="attr-textarea-value">value</code></dt>
900:
901: <dd>
902:
903: <p>Returns the current value of the element.</p>
904:
905: <p>Can be set, to change the value.</p>
906:
907: </dd>
908:
909: </dl><div class="example">
910:
911: <p>Here is an example of a <code><a href="#the-textarea-element">textarea</a></code> being used for
912: unrestricted free-form text input in a form:</p>
913:
914: <pre><p>If you have any comments, please let us know: <textarea cols=80 name=comments></textarea></p></pre>
915:
1.30 mike 916: </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>
1.9 mike 917: <dd><a href="content-models.html#flow-content">Flow content</a>.</dd>
918: <dd><a href="content-models.html#phrasing-content">Phrasing content</a>.</dd>
919: <dd><a href="content-models.html#interactive-content">Interactive content</a>.</dd>
920: <dd><a href="forms.html#category-listed" title="category-listed">Listed</a>, <a href="forms.html#category-label" title="category-label">labelable</a>, <a href="forms.html#category-submit" title="category-submit">submittable</a>, and <a href="forms.html#category-reset" title="category-reset">resettable</a> <a href="forms.html#form-associated-element">form-associated element</a>.</dd>
921: <dt>Contexts in which this element may be used:</dt>
922: <dd>Where <a href="content-models.html#phrasing-content">phrasing content</a> is expected.</dd>
923: <dt>Content model:</dt>
924: <dd>Empty.</dd>
925: <dt>Content attributes:</dt>
926: <dd><a href="elements.html#global-attributes">Global attributes</a></dd>
927: <dd><code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus">autofocus</a></code></dd>
928: <dd><code title="attr-keygen-challenge"><a href="#attr-keygen-challenge">challenge</a></code></dd>
929: <dd><code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled">disabled</a></code></dd>
930: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form">form</a></code></dd>
931: <dd><code title="attr-keygen-keytype"><a href="#attr-keygen-keytype">keytype</a></code></dd>
932: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name">name</a></code></dd>
933: <dt>DOM interface:</dt>
934: <dd>
935: <pre class="idl">interface <dfn id="htmlkeygenelement">HTMLKeygenElement</dfn> : <a href="elements.html#htmlelement">HTMLElement</a> {
936: attribute boolean <a href="#dom-fe-autofocus" title="dom-fe-autofocus">autofocus</a>;
937: attribute DOMString <a href="#dom-keygen-challenge" title="dom-keygen-challenge">challenge</a>;
938: attribute boolean <a href="#dom-fe-disabled" title="dom-fe-disabled">disabled</a>;
939: readonly attribute <a href="forms.html#htmlformelement">HTMLFormElement</a> <a href="#dom-fae-form" title="dom-fae-form">form</a>;
940: attribute DOMString <a href="#dom-keygen-keytype" title="dom-keygen-keytype">keytype</a>;
941: attribute DOMString <a href="#dom-fe-name" title="dom-fe-name">name</a>;
942:
943: readonly attribute DOMString <a href="#dom-keygen-type" title="dom-keygen-type">type</a>;
944:
945: readonly attribute boolean <a href="#dom-cva-willvalidate" title="dom-cva-willValidate">willValidate</a>;
946: readonly attribute <a href="#validitystate">ValidityState</a> <a href="#dom-cva-validity" title="dom-cva-validity">validity</a>;
947: readonly attribute DOMString <a href="#dom-cva-validationmessage" title="dom-cva-validationMessage">validationMessage</a>;
948: boolean <a href="#dom-cva-checkvalidatity" title="dom-cva-checkValidatity">checkValidity</a>();
949: void <a href="#dom-cva-setcustomvalidity" title="dom-cva-setCustomValidity">setCustomValidity</a>(in DOMString error);
950:
1.19 mike 951: readonly attribute <a href="#nodelist">NodeList</a> <a href="#dom-lfe-labels" title="dom-lfe-labels">labels</a>;
1.9 mike 952: };</pre>
953: </dd>
954: </dl><p>The <code><a href="#the-keygen-element">keygen</a></code> element <a href="#represents">represents</a> a key
955: pair generator control. When the control's form is submitted, the
956: private key is stored in the local keystore, and the public key is
957: packaged and sent to the server.</p><p>The <dfn id="attr-keygen-challenge" title="attr-keygen-challenge"><code>challenge</code></dfn> attribute
958: may be specified. Its value will be packaged with the submitted
959: key.</p><p>The <dfn id="attr-keygen-keytype" title="attr-keygen-keytype"><code>keytype</code></dfn>
960: attribute is an <a href="common-microsyntaxes.html#enumerated-attribute">enumerated attribute</a>. The following
961: table lists the keywords and states for the attribute — the
962: keywords in the left column map to the states listed in the cell in
963: the second column on the same row as the keyword. User agents are
1.26 mike 964: not required to support these values, and must only recognize values
1.9 mike 965: whose corresponding algorithms they support.</p><table><thead><tr><th> Keyword </th><th> State
966: </th></tr></thead><tbody><tr><td> <code title="">rsa</code>
967: </td><td> <i title="">RSA</i>
968: <!-- v2 (see below)
969: <tr>
970: <td> <code title="">ec</code>
971: <td> <i title="">EC</i>
972: -->
973: </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
974: 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
975: user agents are to support — it is possible for a user agent
976: 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">form</a></code> attribute is used to
977: explicitly associate the <code><a href="#the-keygen-element">keygen</a></code> element with its
978: <a href="association-of-controls-and-forms.html#form-owner">form owner</a>. The <code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name">name</a></code>
979: attribute represents the element's name. The <code title="attr-fe-disabled"><a href="association-of-controls-and-forms.html#attr-fe-disabled">disabled</a></code> attribute is used to make
980: the control non-interactive and to prevent its value from being
981: submitted. The <code title="attr-fe-autofocus"><a href="association-of-controls-and-forms.html#attr-fe-autofocus">autofocus</a></code>
982: attribute controls focus.</p><dl class="domintro"><dt><var title="">keygen</var> . <code title="attr-keygen-type">type</code></dt>
983:
984: <dd>
985:
986: <p>Returns the string "<code title="">keygen</code>".</p>
987:
988: </dd>
989:
990: </dl><p class="note">This specification does not specify how the private
991: key generated is to be used. It is expected that after receiving the
992: <code><a href="#signedpublickeyandchallenge">SignedPublicKeyAndChallenge</a></code> (SPKAC) structure, the
993: server will generate a client certificate and offer it back to the
994: user for download; this certificate, once downloaded and stored in
995: the key store along with the private key, can then be used to
996: authenticate to services that use SSL and certificate
997: authentication.</p><!-- how does the UA know which private key is associated with a
998: certificate it gets back after the server has taken the public key
999: created by <keygen> and turned it into a client cert? --><div class="example">
1000:
1001: <p>To generate a key pair, add the private key to the user's key
1002: store, and submit the public key to the server, markup such as the
1003: following can be used:</p>
1004:
1.22 mike 1005: <pre><form action="processkey.cgi" method="post" enctype="multipart/form-data">
1.9 mike 1006: <p><keygen name="key"></p>
1007: <p><input type=submit value="Submit key..."></p>
1008: </form></pre>
1009:
1010: <p>The server will then receive a form submission with a packaged
1011: RSA public key as the value of "<code title="">key</code>". This
1012: can then be used for various purposes, such as generating a client
1013: certificate, as mentioned above.</p>
1014:
1.30 mike 1015: </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>
1.9 mike 1016: <dd><a href="content-models.html#flow-content">Flow content</a>.</dd>
1017: <dd><a href="content-models.html#phrasing-content">Phrasing content</a>.</dd>
1.11 mike 1018: <dd><a href="forms.html#category-listed" title="category-listed">Listed</a>, <a href="forms.html#category-label" title="category-label">labelable</a>, and <a href="forms.html#category-reset" title="category-reset">resettable</a> <a href="forms.html#form-associated-element">form-associated element</a>.</dd>
1.9 mike 1019: <dt>Contexts in which this element may be used:</dt>
1020: <dd>Where <a href="content-models.html#phrasing-content">phrasing content</a> is expected.</dd>
1021: <dt>Content model:</dt>
1022: <dd><a href="content-models.html#phrasing-content">Phrasing content</a>.</dd>
1023: <dt>Content attributes:</dt>
1024: <dd><a href="elements.html#global-attributes">Global attributes</a></dd>
1025: <dd><code title="attr-output-for"><a href="#attr-output-for">for</a></code></dd>
1026: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form">form</a></code></dd>
1027: <dd><code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name">name</a></code></dd>
1028: <dt>DOM interface:</dt>
1029: <dd>
1030: <pre class="idl">interface <dfn id="htmloutputelement">HTMLOutputElement</dfn> : <a href="elements.html#htmlelement">HTMLElement</a> {
1.12 mike 1031: [PutForwards=<a href="#dom-domsettabletokenlist-value" title="dom-DOMSettableTokenList-value">value</a>] readonly attribute <a href="urls.html#domsettabletokenlist">DOMSettableTokenList</a> <span title="dom-output-wrap">htmlFor</span>;
1.9 mike 1032: readonly attribute <a href="forms.html#htmlformelement">HTMLFormElement</a> <a href="#dom-fae-form" title="dom-fae-form">form</a>;
1033: attribute DOMString <a href="#dom-fe-name" title="dom-fe-name">name</a>;
1034:
1035: readonly attribute DOMString <a href="#dom-output-type" title="dom-output-type">type</a>;
1036: attribute DOMString <a href="#dom-output-defaultvalue" title="dom-output-defaultValue">defaultValue</a>;
1037: attribute DOMString <a href="#dom-output-value" title="dom-output-value">value</a>;
1038:
1039: readonly attribute boolean <a href="#dom-cva-willvalidate" title="dom-cva-willValidate">willValidate</a>;
1040: readonly attribute <a href="#validitystate">ValidityState</a> <a href="#dom-cva-validity" title="dom-cva-validity">validity</a>;
1041: readonly attribute DOMString <a href="#dom-cva-validationmessage" title="dom-cva-validationMessage">validationMessage</a>;
1042: boolean <a href="#dom-cva-checkvalidatity" title="dom-cva-checkValidatity">checkValidity</a>();
1043: void <a href="#dom-cva-setcustomvalidity" title="dom-cva-setCustomValidity">setCustomValidity</a>(in DOMString error);
1.11 mike 1044:
1.19 mike 1045: readonly attribute <a href="#nodelist">NodeList</a> <a href="#dom-lfe-labels" title="dom-lfe-labels">labels</a>;
1.9 mike 1046: };</pre>
1047: </dd>
1048: </dl><p>The <code><a href="#the-output-element">output</a></code> element <a href="#represents">represents</a> the result of a
1049: calculation.</p><p>The <dfn id="attr-output-for" title="attr-output-for"><code>for</code></dfn> content
1050: attribute allows an explicit relationship to be made between the
1051: result of a calculation and the elements that represent the values
1052: that went into the calculation or that otherwise influenced the
1053: calculation. The <code title="attr-output-for"><a href="#attr-output-for">for</a></code> attribute,
1054: if specified, must contain a string consisting of an <a href="common-microsyntaxes.html#unordered-set-of-unique-space-separated-tokens">unordered
1055: set of unique space-separated tokens</a>, each of which must have
1056: the value of an ID of an element in the same
1.19 mike 1057: <code><a href="#document">Document</a></code>.</p><p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form">form</a></code> attribute is used to
1.9 mike 1058: explicitly associate the <code><a href="#the-output-element">output</a></code> element with its
1059: <a href="association-of-controls-and-forms.html#form-owner">form owner</a>. The <code title="attr-fe-name"><a href="association-of-controls-and-forms.html#attr-fe-name">name</a></code>
1060: attribute represents the element's name.</p><dl class="domintro"><dt><var title="">output</var> . <code title="dom-output-value"><a href="#dom-output-value">value</a></code> [ = <var title="">value</var> ]</dt>
1061:
1062: <dd>
1063:
1064: <p>Returns the element's current value.</p>
1065:
1066: <p>Can be set, to change the value.</p>
1067:
1068: </dd>
1069:
1070: <dt><var title="">output</var> . <code title="dom-output-defaultValue"><a href="#dom-output-defaultvalue">defaultValue</a></code> [ = <var title="">value</var> ]</dt>
1071:
1072: <dd>
1073:
1074: <p>Returns the element's current default value.</p>
1075:
1076: <p>Can be set, to change the default value.</p>
1077:
1078: </dd>
1079:
1080: <dt><var title="">output</var> . <code title="dom-output-type"><a href="#dom-output-type">type</a></code></dt>
1081:
1082: <dd>
1083:
1084: <p>Returns the string "<code title="">output</code>".</p>
1085:
1086: </dd>
1087:
1088: </dl><div class="example">
1089:
1090: <p>A simple calculator could use <code><a href="#the-output-element">output</a></code> for its
1091: display of calculated results:</p>
1092:
1093: <pre><form onsubmit="return false">
1094: <input name=a type=number step=any> +
1095: <input name=b type=number step=any> =
1.32 mike 1096: <output onforminput="value = a.valueAsNumber + b.valueAsNumber"></output>
1.9 mike 1097: </form></pre>
1098:
1.30 mike 1099: </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>
1.11 mike 1100: <dd><a href="content-models.html#flow-content">Flow content</a>.</dd>
1101: <dd><a href="content-models.html#phrasing-content">Phrasing content</a>.</dd>
1102: <dd><a href="forms.html#category-label" title="category-label">Labelable</a> <a href="forms.html#form-associated-element">form-associated element</a>.</dd>
1103: <dt>Contexts in which this element may be used:</dt>
1104: <dd>Where <a href="content-models.html#phrasing-content">phrasing content</a> is expected.</dd>
1105: <dt>Content model:</dt>
1106: <dd><a href="content-models.html#phrasing-content">Phrasing content</a>, but there must be no <code><a href="#the-progress-element">progress</a></code> element descendants.</dd>
1107: <dt>Content attributes:</dt>
1108: <dd><a href="elements.html#global-attributes">Global attributes</a></dd>
1109: <dd><code title="attr-progress-value"><a href="#attr-progress-value">value</a></code></dd>
1110: <dd><code title="attr-progress-max"><a href="#attr-progress-max">max</a></code></dd>
1111: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form">form</a></code></dd>
1112: <dt>DOM interface:</dt>
1113: <dd>
1114: <pre class="idl">interface <dfn id="htmlprogresselement">HTMLProgressElement</dfn> : <a href="elements.html#htmlelement">HTMLElement</a> {
1115: attribute float <a href="#dom-progress-value" title="dom-progress-value">value</a>;
1116: attribute float <a href="#dom-progress-max" title="dom-progress-max">max</a>;
1117: readonly attribute float <a href="#dom-progress-position" title="dom-progress-position">position</a>;
1118: readonly attribute <a href="forms.html#htmlformelement">HTMLFormElement</a> <a href="#dom-fae-form" title="dom-fae-form">form</a>;
1.19 mike 1119: readonly attribute <a href="#nodelist">NodeList</a> <a href="#dom-lfe-labels" title="dom-lfe-labels">labels</a>;
1.11 mike 1120: };</pre>
1121: </dd>
1122: </dl><p>The <code><a href="#the-progress-element">progress</a></code> element <a href="#represents">represents</a> the
1123: completion progress of a task. The progress is either indeterminate,
1124: indicating that progress is being made but that it is not clear how
1125: much more work remains to be done before the task is complete
1126: (e.g. because the task is waiting for a remote host to respond), or
1127: the progress is a number in the range zero to a maximum, giving the
1128: fraction of work that has so far been completed.</p><p>There are two attributes that determine the current task
1129: completion represented by the element.</p><p>The <dfn id="attr-progress-value" title="attr-progress-value"><code>value</code></dfn>
1130: attribute specifies how much of the task has been completed, and the
1131: <dfn id="attr-progress-max" title="attr-progress-max"><code>max</code></dfn> attribute
1132: specifies how much work the task requires in total. The units are
1133: arbitrary and not specified.</p><p>Authors are encouraged to also include the current value and the
1134: maximum value inline as text inside the element, so that the
1135: progress is made available to users of legacy user agents.</p><div class="example">
1136: <p>Here is a snippet of a Web application that shows the progress
1137: of some automated task:</p>
1138: <pre><section>
1139: <h2>Task Progress</h2>
1140: <p>Progress: <progress id="p" max=100><span>0</span>%</progress></p>
1141: <script>
1142: var progressBar = document.getElementById('p');
1143: function updateProgress(newValue) {
1144: progressBar.value = newValue;
1145: progressBar.getElementsByTagName('span')[0].textContent = newValue;
1146: }
1147: </script>
1148: </section></pre>
1149: <p>(The <code>updateProgress()</code> method in this example would
1150: be called by some other code on the page to update the actual
1151: progress bar as the task progressed.)</p>
1152: </div><p>The <code title="attr-progress-value"><a href="#attr-progress-value">value</a></code> and <code title="attr-progress-max"><a href="#attr-progress-max">max</a></code> attributes, when present, must
1153: have values that are <a href="common-microsyntaxes.html#valid-floating-point-number" title="valid floating point number">valid
1154: floating point numbers</a>. The <code title="attr-progress-value"><a href="#attr-progress-value">value</a></code> attribute, if present, must
1155: have a value equal to or greater than zero, and less than or equal
1156: to the value of the <code title="attr-progress-max"><a href="#attr-progress-max">max</a></code>
1157: attribute, if present, or 1.0, otherwise. The <code title="attr-progress-max"><a href="#attr-progress-max">max</a></code> attribute, if present, must
1158: have a value greater than zero.</p><p class="note">The <code><a href="#the-progress-element">progress</a></code> element is the wrong
1159: element to use for something that is just a gauge, as opposed to
1160: task progress. For instance, indicating disk space usage using
1161: <code><a href="#the-progress-element">progress</a></code> would be inappropriate. Instead, the
1162: <code><a href="#the-meter-element">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="#dom-progress-position">position</a></code></dt>
1163:
1164: <dd>
1165:
1166: <p>For a determinate progress bar (one with known current and
1167: maximum values), returns the result of dividing the current value
1168: by the maximum value.</p>
1169:
1170: <p>For an indeterminate progress bar, returns −1.</p>
1171:
1.30 mike 1172: </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>
1.11 mike 1173: <dd><a href="content-models.html#flow-content">Flow content</a>.</dd>
1174: <dd><a href="content-models.html#phrasing-content">Phrasing content</a>.</dd>
1175: <dd><a href="forms.html#category-label" title="category-label">Labelable</a> <a href="forms.html#form-associated-element">form-associated element</a>.</dd>
1176: <dt>Contexts in which this element may be used:</dt>
1177: <dd>Where <a href="content-models.html#phrasing-content">phrasing content</a> is expected.</dd>
1178: <dt>Content model:</dt>
1179: <dd><a href="content-models.html#phrasing-content">Phrasing content</a>, but there must be no <code><a href="#the-meter-element">meter</a></code> element descendants.</dd>
1180: <dt>Content attributes:</dt>
1181: <dd><a href="elements.html#global-attributes">Global attributes</a></dd>
1182: <dd><code title="attr-meter-value"><a href="#attr-meter-value">value</a></code></dd>
1183: <dd><code title="attr-meter-min"><a href="#attr-meter-min">min</a></code></dd>
1184: <dd><code title="attr-meter-max"><a href="#attr-meter-max">max</a></code></dd>
1185: <dd><code title="attr-meter-low"><a href="#attr-meter-low">low</a></code></dd>
1186: <dd><code title="attr-meter-high"><a href="#attr-meter-high">high</a></code></dd>
1187: <dd><code title="attr-meter-optimum"><a href="#attr-meter-optimum">optimum</a></code></dd>
1188: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form">form</a></code></dd>
1189: <dt>DOM interface:</dt>
1190: <dd>
1191: <pre class="idl">interface <dfn id="htmlmeterelement">HTMLMeterElement</dfn> : <a href="elements.html#htmlelement">HTMLElement</a> {
1192: attribute float <a href="#dom-meter-value" title="dom-meter-value">value</a>;
1193: attribute float <a href="#dom-meter-min" title="dom-meter-min">min</a>;
1194: attribute float <a href="#dom-meter-max" title="dom-meter-max">max</a>;
1195: attribute float <a href="#dom-meter-low" title="dom-meter-low">low</a>;
1196: attribute float <a href="#dom-meter-high" title="dom-meter-high">high</a>;
1197: attribute float <a href="#dom-meter-optimum" title="dom-meter-optimum">optimum</a>;
1198: readonly attribute <a href="forms.html#htmlformelement">HTMLFormElement</a> <a href="#dom-fae-form" title="dom-fae-form">form</a>;
1.19 mike 1199: readonly attribute <a href="#nodelist">NodeList</a> <a href="#dom-lfe-labels" title="dom-lfe-labels">labels</a>;
1.11 mike 1200: };</pre>
1201: </dd>
1202: </dl><p>The <code><a href="#the-meter-element">meter</a></code> element <a href="#represents">represents</a> a scalar
1203: measurement within a known range, or a fractional value; for example
1204: disk usage, the relevance of a query result, or the fraction of a
1205: 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">meter</a></code> element should not be used to
1206: indicate progress (as in a progress bar). For that role, HTML
1207: provides a separate <code><a href="#the-progress-element">progress</a></code> element.</p><p class="note">The <code><a href="#the-meter-element">meter</a></code> element also does not
1208: represent a scalar value of arbitrary range — for example, it
1209: would be wrong to use this to report a weight, or height, unless
1210: there is a known maximum value.</p><p>There are six attributes that determine the semantics of the
1211: gauge represented by the element.</p><p>The <dfn id="attr-meter-min" title="attr-meter-min"><code>min</code></dfn> attribute
1212: specifies the lower bound of the range, and the <dfn id="attr-meter-max" title="attr-meter-max"><code>max</code></dfn> attribute specifies
1213: the upper bound. The <dfn id="attr-meter-value" title="attr-meter-value"><code>value</code></dfn> attribute
1214: specifies the value to have the gauge indicate as the "measured"
1215: value.</p><p>The other three attributes can be used to segment the gauge's
1216: range into "low", "medium", and "high" parts, and to indicate which
1217: part of the gauge is the "optimum" part. The <dfn id="attr-meter-low" title="attr-meter-low"><code>low</code></dfn> attribute specifies
1218: 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
1219: 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
1220: gives the position that is "optimum"; if that is higher than the
1221: "high" value then this indicates that the higher the value, the
1222: better; if it's lower than the "low" mark then it indicates that
1223: lower values are better, and naturally if it is in between then it
1.17 mike 1224: indicates that neither high nor low values are good.</p><p> The <code title="attr-meter-value"><a href="#attr-meter-value">value</a></code> attribute must be
1.11 mike 1225: specified. The <code title="attr-meter-value"><a href="#attr-meter-value">value</a></code>, <code title="attr-meter-min"><a href="#attr-meter-min">min</a></code>, <code title="attr-meter-low"><a href="#attr-meter-low">low</a></code>, <code title="attr-meter-high"><a href="#attr-meter-high">high</a></code>, <code title="attr-meter-max"><a href="#attr-meter-max">max</a></code>, and <code title="attr-meter-optimum"><a href="#attr-meter-optimum">optimum</a></code> attributes, when present,
1226: must have values that are <a href="common-microsyntaxes.html#valid-floating-point-number" title="valid floating point
1227: 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">value</a></code> attribute's number.</p><p>If the <code title="attr-meter-min"><a href="#attr-meter-min">min</a></code> attribute
1228: attribute is specified, then let <var title="">minimum</var> be that
1229: attribute's value; otherwise, let it be zero.</p><p>If the <code title="attr-meter-max"><a href="#attr-meter-max">max</a></code> attribute
1230: attribute is specified, then let <var title="">maximum</var> be that
1231: 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>
1232: <li><var title="">minimum</var> ≤ <code title="attr-meter-low"><a href="#attr-meter-low">low</a></code> ≤ <var title="">maximum</var> (if <code title="attr-meter-low"><a href="#attr-meter-low">low</a></code> is specified)</li>
1233: <li><var title="">minimum</var> ≤ <code title="attr-meter-high"><a href="#attr-meter-high">high</a></code> ≤ <var title="">maximum</var> (if <code title="attr-meter-high"><a href="#attr-meter-high">high</a></code> is specified)</li>
1234: <li><var title="">minimum</var> ≤ <code title="attr-meter-optimum"><a href="#attr-meter-optimum">optimum</a></code> ≤ <var title="">maximum</var> (if <code title="attr-meter-optimum"><a href="#attr-meter-optimum">optimum</a></code> is specified)</li>
1.21 mike 1235: <li><code title="attr-meter-low"><a href="#attr-meter-low">low</a></code> ≤ <code title="attr-meter-high"><a href="#attr-meter-high">high</a></code> (if both <code title="attr-meter-low"><a href="#attr-meter-low">low</a></code> and <code title="attr-meter-high"><a href="#attr-meter-high">high</a></code> are specified)</li>
1236: </ul><p class="note">If no minimum or maximum is specified, then the
1.11 mike 1237: range is assumed to be 0..1, and the value thus has to be within
1238: that range.</p><p>Authors are encouraged to include a textual representation of the
1239: gauge's state in the element's contents, for users of user agents
1240: that do not support the <code><a href="#the-meter-element">meter</a></code> element.</p><div class="example">
1241:
1242: <p>The following examples show three gauges that would all be
1243: three-quarters full:</p>
1244:
1245: <pre>Storage space usage: <meter value=6 max=8>6 blocks used (out of 8 total)</meter>
1246: Voter turnout: <meter value=0.75><img alt="75%" src="graph75.png"></meter>
1247: Tickets sold: <meter min="0" max="100" value="75"></meter></pre>
1248:
1249: <p>The following example is incorrect use of the element, because
1250: it doesn't give a range (and since the default maximum is 1, both
1251: of the gauges would end up looking maxed out):</p>
1252:
1253: <pre class="bad"><p>The grapefruit pie had a radius of <meter value=12>12cm</meter>
1254: and a height of <meter value=2>2cm</meter>.</p> <!-- <strong>BAD!</strong> --></pre>
1255:
1256: <p>Instead, one would either not include the meter element, or use
1257: the meter element with a defined range to give the dimensions in
1258: context compared to other pies:</p>
1259:
1260: <pre><p>The grapefruit pie had a radius of 12cm and a height of
1261: 2cm.</p>
1262: <dl>
1263: <dt>Radius: <dd> <meter min=0 max=20 value=12>12cm</meter>
1264: <dt>Height: <dd> <meter min=0 max=10 value=2>2cm</meter>
1265: </dl></pre>
1266:
1267: </div><p>There is no explicit way to specify units in the
1268: <code><a href="#the-meter-element">meter</a></code> element, but the units may be specified in the
1269: <code title="attr-title"><a href="elements.html#the-title-attribute">title</a></code> attribute in free-form text.</p><div class="example">
1270:
1271: <p>The example above could be extended to mention the units:</p>
1272:
1273: <pre><dl>
1274: <dt>Radius: <dd> <meter min=0 max=20 value=12 title="centimeters">12cm</meter>
1275: <dt>Height: <dd> <meter min=0 max=10 value=2 title="centimeters">2cm</meter>
1276: </dl></pre>
1277:
1278: </div><div class="example">
1279: <p>The following markup:</p>
1280: <pre><h3>Suggested groups</h3>
1281: <menu type="toolbar">
1282: <a href="?cmd=hsg" onclick="hideSuggestedGroups()">Hide suggested groups</a>
1283: </menu>
1284: <ul>
1285: <li>
1286: <p><a href="/group/comp.infosystems.www.authoring.stylesheets/view">comp.infosystems.www.authoring.stylesheets</a> -
1287: <a href="/group/comp.infosystems.www.authoring.stylesheets/subscribe">join</a></p>
1288: <p>Group description: <strong>Layout/presentation on the WWW.</strong></p>
1289: <p><strong><meter value="0.5">Moderate activity,</meter></strong> Usenet, 618 subscribers</p>
1290: </li>
1291: <li>
1292: <p><a href="/group/netscape.public.mozilla.xpinstall/view">netscape.public.mozilla.xpinstall</a> -
1293: <a href="/group/netscape.public.mozilla.xpinstall/subscribe">join</a></p>
1294: <p>Group description: <strong>Mozilla XPInstall discussion.</strong></p>
1295: <p><strong><meter value="0.25">Low activity,</meter></strong> Usenet, 22 subscribers</p>
1296: </li>
1297: <li>
1298: <p><a href="/group/mozilla.dev.general/view">mozilla.dev.general</a> -
1299: <a href="/group/mozilla.dev.general/subscribe">join</a></p>
1300: <p><strong><meter value="0.25">Low activity,</meter></strong> Usenet, 66 subscribers</p>
1301: </li>
1302: </ul></pre>
1303: <p>Might be rendered as follows:</p>
1304: <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 1305: </div><p>User agents combine the value of
1306: the <code title="attr-title"><a href="elements.html#the-title-attribute">title</a></code> attribute and the other
1.11 mike 1307: attributes to provide context-sensitive help or inline text
1308: detailing the actual values.</p><div class="example">
1309: <p>For example, the following snippet:</p>
1310: <pre><meter min=0 max=60 value=23.2 title=seconds></meter></pre>
1311: <p>...might cause the user agent to display a gauge with a tooltip
1312: saying "Value: 23.2 out of 60." on one line and "seconds" on a
1313: second line.</p>
1314: </div><p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form">form</a></code> attribute is used to
1315: explicitly associate the <code><a href="#the-meter-element">meter</a></code> element with its
1.27 mike 1316: <a href="association-of-controls-and-forms.html#form-owner">form owner</a>.</p><div class="example">
1.11 mike 1317:
1318: <p>The following example shows how a gauge could fall back to
1319: localized or pretty-printed text.</p>
1320:
1321: <pre><p>Disk usage: <meter min=0 value=170261928 max=233257824>170 261 928 bytes used
1322: out of 233 257 824 bytes available</meter></p></pre>
1323:
1.9 mike 1324: </div></body></html>
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