Annotation of html5/spec/the-fieldset-element.html, revision 1.43
1.1 mike 1: <!DOCTYPE html>
2: <html lang="en-US-x-Hixie"><head><title>4.10.4 The fieldset element — HTML5</title><style type="text/css">
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151:
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164: ul.domTree .t10 code { color: teal; }
165:
166: body.dfnEnabled dfn { cursor: pointer; }
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171: height: auto;
172: width: auto;
173: padding: 0.5em 0.75em;
174: font: small sans-serif, Droid Sans Fallback;
175: background: #DDDDDD;
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183: .dfnPanel li { list-style-position: inside; }
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185: #configUI { position: absolute; z-index: 20; top: 10em; right: 1em; width: 11em; font-size: small; }
186: #configUI p { margin: 0.5em 0; padding: 0.3em; background: #EEEEEE; color: black; border: inset thin; }
187: #configUI p label { display: block; }
188: #configUI #updateUI, #configUI .loginUI { text-align: center; }
189: #configUI input[type=button] { display: block; margin: auto; }
190:
191: fieldset { margin: 1em; padding: 0.5em 1em; }
192: fieldset > legend + * { margin-top: 0; }
193: fieldset > :last-child { margin-bottom: 0; }
194: fieldset p { margin: 0.5em 0; }
195:
196: </style><link href="http://www.w3.org/StyleSheets/TR/W3C-ED" rel="stylesheet" type="text/css"><style type="text/css">
197:
198: .applies thead th > * { display: block; }
199: .applies thead code { display: block; }
200: .applies tbody th { whitespace: nowrap; }
201: .applies td { text-align: center; }
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204: .matrix, .matrix td { border: hidden; text-align: right; }
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206:
207: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
208: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
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211: td.eg { border-width: thin; text-align: center; }
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217: #table-example-1 th, #table-example-1 td { border: solid thin; }
218: #table-example-1 th { font-weight: normal; }
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229:
230: .apple-table-examples { border: none; border-collapse: separate; border-spacing: 1.5em 0em; width: 40em; margin-left: 3em; }
231: .apple-table-examples * { font-family: "Times", serif; }
232: .apple-table-examples td, .apple-table-examples th { border: none; white-space: nowrap; padding-top: 0; padding-bottom: 0; }
233: .apple-table-examples tbody th:first-child { border-left: none; width: 100%; }
234: .apple-table-examples thead th:first-child ~ th { font-size: smaller; font-weight: bolder; border-bottom: solid 2px; text-align: center; }
235: .apple-table-examples tbody th::after, .apple-table-examples tfoot th::after { content: leader(". ") }
236: .apple-table-examples tbody th, .apple-table-examples tfoot th { font: inherit; text-align: left; }
237: .apple-table-examples td { text-align: right; vertical-align: top; }
238: .apple-table-examples.e1 tbody tr:last-child td { border-bottom: solid 1px; }
239: .apple-table-examples.e1 tbody + tbody tr:last-child td { border-bottom: double 3px; }
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241: .apple-table-examples sup { line-height: 0; }
242:
243: .details-example img { vertical-align: top; }
244:
245: #base64-table {
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253: -moz-column-gap: 1em;
254: -webkit-column-width: 6em;
255: -webkit-column-count: 5;
256: -webkit-column-gap: 1em;
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259: #base64-table * { border: none; }
260: #base64-table tbody td:first-child:after { content: ':'; }
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262:
263: #named-character-references-table {
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271: -webkit-column-gap: 1em;
272: }
273: #named-character-references-table > table > tbody > tr > td:first-child + td,
274: #named-character-references-table > table > tbody > tr > td:last-child { text-align: center; }
275: #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; }
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277:
278: .glyph.control { color: red; }
279:
280: @font-face {
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282: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743.ttf');
283: }
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299: }
300:
301: </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">
302: function getCookie(name) {
303: var params = location.search.substr(1).split("&");
304: for (var index = 0; index < params.length; index++) {
305: if (params[index] == name)
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308: if (data[0] == name)
309: return unescape(data[1]);
310: }
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314: if (data[0] == name)
315: return unescape(data[1]);
316: }
317: return null;
318: }
319: </script>
320: <script src="link-fixup.js"></script>
321: <link href="the-form-element.html" title="4.10.3 The form element" rel="prev">
322: <link href="index.html#contents" title="Table of contents" rel="contents">
323: <link href="the-legend-element.html" title="4.10.5 The legend element" rel="next">
1.22 mike 324: </head><body onload="fixBrokenLink();" class="split chapter"><div class="head" id="head">
1.1 mike 325: <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
326:
327: <h1>HTML5</h1>
1.43 ! mike 328: <h2 class="no-num no-toc" id="a-vocabulary-and-associated-apis-for-html-and-xhtml">A vocabulary and associated APIs for HTML and XHTML</h2><p>This is revision 1.5534.</p>
1.1 mike 329:
1.42 mike 330: <h2 class="no-num no-toc" id="editor-s-draft-30-january-2012">Editor's Draft 30 January 2012</h2>
1.1 mike 331: </div><nav class="prev_next">
332: <a href="the-form-element.html">← 4.10.3 The form element</a> –
333: <a href="index.html#contents">Table of contents</a> –
334: <a href="the-legend-element.html">4.10.5 The legend element →</a>
335: </nav>
336:
1.25 mike 337: <h4 id="the-fieldset-element"><span class="secno">4.10.4 </span>The <dfn><code>fieldset</code></dfn> element</h4><dl class="element"><dt><a href="element-definitions.html#element-dfn-categories" title="element-dfn-categories">Categories</a>:</dt>
1.1 mike 338: <dd><a href="content-models.html#flow-content">Flow content</a>.</dd>
339: <dd><a href="headings-and-sections.html#sectioning-root">Sectioning root</a>.</dd>
340: <dd><a href="forms.html#category-listed" title="category-listed">Listed</a> <a href="forms.html#form-associated-element">form-associated element</a>.</dd>
341: <dd><a href="content-models.html#palpable-content">Palpable content</a>.</dd>
1.25 mike 342: <dt><a href="element-definitions.html#element-dfn-contexts" title="element-dfn-contexts">Contexts in which this element can be used</a>:</dt>
1.1 mike 343: <dd>Where <a href="content-models.html#flow-content">flow content</a> is expected.</dd>
1.25 mike 344: <dt><a href="element-definitions.html#element-dfn-content-model" title="element-dfn-content-model">Content model</a>:</dt>
1.1 mike 345: <dd>Optionally a <code><a href="the-legend-element.html#the-legend-element">legend</a></code> element, followed by <a href="content-models.html#flow-content">flow content</a>.</dd>
1.25 mike 346: <dt><a href="element-definitions.html#element-dfn-attributes" title="element-dfn-attributes">Content attributes</a>:</dt>
1.1 mike 347: <dd><a href="global-attributes.html#global-attributes">Global attributes</a></dd>
348: <dd><code title="attr-fieldset-disabled"><a href="#attr-fieldset-disabled">disabled</a></code></dd>
349: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form">form</a></code></dd>
350: <dd><code title="attr-fe-name"><a href="attributes-common-to-form-controls.html#attr-fe-name">name</a></code></dd>
1.25 mike 351: <dt><a href="element-definitions.html#element-dfn-dom" title="element-dfn-dom">DOM interface</a>:</dt>
1.1 mike 352: <dd>
353: <pre class="idl">interface <dfn id="htmlfieldsetelement">HTMLFieldSetElement</dfn> : <a href="elements.html#htmlelement">HTMLElement</a> {
354: attribute boolean <a href="#dom-fieldset-disabled" title="dom-fieldset-disabled">disabled</a>;
355: readonly attribute <a href="the-form-element.html#htmlformelement">HTMLFormElement</a>? <a href="association-of-controls-and-forms.html#dom-fae-form" title="dom-fae-form">form</a>;
356: attribute DOMString <a href="attributes-common-to-form-controls.html#dom-fe-name" title="dom-fe-name">name</a>;
357:
358: readonly attribute DOMString <a href="#dom-fieldset-type" title="dom-fieldset-type">type</a>;
359:
360: readonly attribute <a href="common-dom-interfaces.html#htmlformcontrolscollection">HTMLFormControlsCollection</a> <a href="#dom-fieldset-elements" title="dom-fieldset-elements">elements</a>;
361:
362: readonly attribute boolean <a href="constraints.html#dom-cva-willvalidate" title="dom-cva-willValidate">willValidate</a>;
363: readonly attribute <a href="constraints.html#validitystate">ValidityState</a> <a href="constraints.html#dom-cva-validity" title="dom-cva-validity">validity</a>;
364: readonly attribute DOMString <a href="constraints.html#dom-cva-validationmessage" title="dom-cva-validationMessage">validationMessage</a>;
365: boolean <a href="constraints.html#dom-cva-checkvalidatity" title="dom-cva-checkValidatity">checkValidity</a>();
366: void <a href="constraints.html#dom-cva-setcustomvalidity" title="dom-cva-setCustomValidity">setCustomValidity</a>(DOMString error);
367: };</pre>
368: </dd>
369: </dl><p>The <code><a href="#the-fieldset-element">fieldset</a></code> element <a href="rendering.html#represents">represents</a> a set
370: of form controls optionally grouped under a common name.</p><p>The name of the group is given by the first <code><a href="the-legend-element.html#the-legend-element">legend</a></code>
371: element that is a child of the <code><a href="#the-fieldset-element">fieldset</a></code> element, if
372: any. The remainder of the descendants form the group.</p><p>The <dfn id="attr-fieldset-disabled" title="attr-fieldset-disabled"><code>disabled</code></dfn>
373: attribute, when specified, causes all the form control descendants
374: of the <code><a href="#the-fieldset-element">fieldset</a></code> element, excluding those that are
375: descendants of the <code><a href="#the-fieldset-element">fieldset</a></code> element's first
376: <code><a href="the-legend-element.html#the-legend-element">legend</a></code> element child, if any, to be <a href="attributes-common-to-form-controls.html#concept-fe-disabled" title="concept-fe-disabled">disabled</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
377: explicitly associate the <code><a href="#the-fieldset-element">fieldset</a></code> element with its
378: <a href="association-of-controls-and-forms.html#form-owner">form owner</a>. The <code title="attr-fe-name"><a href="attributes-common-to-form-controls.html#attr-fe-name">name</a></code>
379: attribute represents the element's name.</p><dl class="domintro"><dt><var title="">fieldset</var> . <code title="dom-fieldset-type"><a href="#dom-fieldset-type">type</a></code></dt>
380:
381: <dd>
382:
383: <p>Returns the string "fieldset".</p>
384:
385: </dd>
386:
387: <dt><var title="">fieldset</var> . <code title="dom-form-elements"><a href="the-form-element.html#dom-form-elements">elements</a></code></dt>
388:
389: <dd>
390:
391: <p>Returns an <code><a href="common-dom-interfaces.html#htmlformcontrolscollection">HTMLFormControlsCollection</a></code> of the form
392: controls in the element.</p>
393:
394: </dd>
395:
396: </dl><div class="impl">
397:
398: <p>The <dfn id="dom-fieldset-disabled" title="dom-fieldset-disabled"><code>disabled</code></dfn> IDL
399: attribute must <a href="common-dom-interfaces.html#reflect">reflect</a> the content attribute of the
400: same name.</p>
401:
402: <p>The <dfn id="dom-fieldset-type" title="dom-fieldset-type"><code>type</code></dfn> IDL
403: attribute must return the string "<code title="">fieldset</code>".</p>
404:
405: <p>The <dfn id="dom-fieldset-elements" title="dom-fieldset-elements"><code>elements</code></dfn> IDL
406: attribute must return an <code><a href="common-dom-interfaces.html#htmlformcontrolscollection">HTMLFormControlsCollection</a></code>
407: rooted at the <code><a href="#the-fieldset-element">fieldset</a></code> element, whose filter matches
408: <a href="forms.html#category-listed" title="category-listed">listed elements</a>.</p>
409:
410: <p>The <code title="dom-cva-willValidate"><a href="constraints.html#dom-cva-willvalidate">willValidate</a></code>, <code title="dom-cva-validity"><a href="constraints.html#dom-cva-validity">validity</a></code>, and <code title="dom-cva-validationMessage"><a href="constraints.html#dom-cva-validationmessage">validationMessage</a></code>
411: attributes, and the <code title="dom-cva-checkValidatity"><a href="constraints.html#dom-cva-checkvalidatity">checkValidity()</a></code> and <code title="dom-cva-setCustomValidity"><a href="constraints.html#dom-cva-setcustomvalidity">setCustomValidity()</a></code>
412: methods, are part of the <a href="constraints.html#the-constraint-validation-api">constraint validation API</a>. The
413: <code title="dom-fae-form"><a href="association-of-controls-and-forms.html#dom-fae-form">form</a></code> and <code title="dom-fe-name"><a href="attributes-common-to-form-controls.html#dom-fe-name">name</a></code> IDL attributes are part of the
414: element's forms API.</p>
415:
416: </div><div class="example">
417:
418: <p>This example shows a <code><a href="#the-fieldset-element">fieldset</a></code> element being used to
419: group a set of related controls:</p>
420:
421: <pre><fieldset>
422: <legend>Display</legend>
423: <p><label><input type=radio name=c value=0 checked> Black on White</label>
424: <p><label><input type=radio name=c value=1> White on Black</label>
425: <p><label><input type=checkbox name=g> Use grayscale</label>
426: <p><label>Enhance contrast <input type=range name=e list=contrast min=0 max=100 value=0 step=1></label>
427: <datalist id=contrast>
428: <option label=Normal value=0>
429: <option label=Maximum value=100>
430: </datalist>
431: </fieldset></pre>
432:
433: </div><div class="example">
434:
435: <p>The following snippet shows a fieldset with a checkbox in the
436: legend that controls whether or not the fieldset is enabled. The
437: contents of the fieldset consist of two required text fields and an
438: optional year/month control.</p>
439:
440: <pre><fieldset name="clubfields" disabled>
441: <legend> <label>
442: <input type=checkbox name=club onchange="form.clubfields.disabled = !checked">
443: Use Club Card
444: </label> </legend>
445: <p><label>Name on card: <input name=clubname required></label></p>
446: <p><label>Card number: <input name=clubnum required pattern="[-0-9]+"></label></p>
447: <p><label>Expiry date: <input name=clubexp type=month></label></p>
448: </fieldset></pre>
449:
450: </div><div class="example">
451:
452: <p>You can also nest <code><a href="#the-fieldset-element">fieldset</a></code> elements. Here is an
453: example expanding on the previous one that does so:</p>
454:
455: <pre><fieldset name="clubfields" disabled>
456: <legend> <label>
457: <input type=checkbox name=club onchange="form.clubfields.disabled = !checked">
458: Use Club Card
459: </label> </legend>
460: <p><label>Name on card: <input name=clubname required></label></p>
461: <fieldset name="numfields">
462: <legend> <label>
463: <input type=radio checked name=clubtype onchange="form.numfields.disabled = !checked">
464: My card has numbers on it
465: </label> </legend>
466: <p><label>Card number: <input name=clubnum required pattern="[-0-9]+"></label></p>
467: </fieldset>
468: <fieldset name="letfields" disabled>
469: <legend> <label>
470: <input type=radio name=clubtype onchange="form.letfields.disabled = !checked">
471: My card has letters on it
472: </label> </legend>
473: <p><label>Card code: <input name=clublet required pattern="[A-Za-z]+"></label></p>
474: </fieldset>
475: </fieldset></pre>
476:
477: <p>In this example, if the outer "Use Club Card" checkbox is not
478: checked, everything inside the outer <code><a href="#the-fieldset-element">fieldset</a></code>,
479: including the two radio buttons in the legends of the two nested
480: <code><a href="#the-fieldset-element">fieldset</a></code>s, will be disabled. However, if the checkbox
481: is checked, then the radio buttons will both be enabled and will
482: let you select which of the two inner <code><a href="#the-fieldset-element">fieldset</a></code>s is to
483: be enabled.</p>
484:
485: </div></body></html>
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