Annotation of html5/spec/common-input-element-apis.html, revision 1.93
1.88 mike 1: <!DOCTYPE html>
1.93 ! mike 2: <html lang="en-US-x-Hixie"><head><title>4.10.7.4 Common input element APIs — HTML5</title><style type="text/css">
1.1 mike 3: pre { margin-left: 2em; white-space: pre-wrap; }
4: h2 { margin: 3em 0 1em 0; }
5: h3 { margin: 2.5em 0 1em 0; }
6: h4 { margin: 2.5em 0 0.75em 0; }
7: h5, h6 { margin: 2.5em 0 1em; }
8: h1 + h2, h1 + h2 + h2 { margin: 0.75em 0 0.75em; }
9: h2 + h3, h3 + h4, h4 + h5, h5 + h6 { margin-top: 0.5em; }
10: p { margin: 1em 0; }
11: hr:not(.top) { display: block; background: none; border: none; padding: 0; margin: 2em 0; height: auto; }
12: dl, dd { margin-top: 0; margin-bottom: 0; }
13: dt { margin-top: 0.75em; margin-bottom: 0.25em; clear: left; }
14: dt + dt { margin-top: 0; }
15: dd dt { margin-top: 0.25em; margin-bottom: 0; }
16: dd p { margin-top: 0; }
17: dd dl + p { margin-top: 1em; }
18: dd table + p { margin-top: 1em; }
19: p + * > li, dd li { margin: 1em 0; }
20: dt, dfn { font-weight: bold; font-style: normal; }
21: i, em { font-style: italic; }
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; }
26: @media screen { code { color: orangered; } code :link, code :visited { color: inherit; } }
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; }
29: table thead, table tbody { border-bottom: solid; }
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, p.overview { float: right; }
44: pre.idl { border: solid thin; background: #EEEEEE; color: black; padding: 0.5em 1em; position: relative; }
45: pre.idl :link, pre.idl :visited { color: inherit; background: transparent; }
46: pre.idl::before { content: "IDL"; font: bold small sans-serif; padding: 0.5em; background: white; position: absolute; top: 0; margin: -1px 0 0 -4em; width: 1.5em; border: thin solid; border-radius: 0 0 0 0.5em }
47: pre.css { border: solid thin; background: #FFFFEE; color: black; padding: 0.5em 1em; }
48: pre.css:first-line { color: #AAAA50; }
49: dl.domintro { color: green; margin: 2em 0 2em 2em; padding: 0.5em 1em; border: none; background: #DDFFDD; }
50: hr + dl.domintro, div.impl + dl.domintro { margin-top: 2.5em; margin-bottom: 1.5em; }
51: dl.domintro dt, dl.domintro dt * { color: black; text-decoration: none; }
52: dl.domintro dd { margin: 0.5em 0 1em 2em; padding: 0; }
53: dl.domintro dd p { margin: 0.5em 0; }
54: dl.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; }
55: dl.switch { padding-left: 2em; }
56: dl.switch > dt { text-indent: -1.5em; }
57: dl.switch > dt:before { content: '\21AA'; padding: 0 0.5em 0 0; display: inline-block; width: 1em; text-align: right; line-height: 0.5em; }
58: dl.triple { padding: 0 0 0 1em; }
59: dl.triple dt, dl.triple dd { margin: 0; display: inline }
60: dl.triple dt:after { content: ':'; }
61: dl.triple dd:after { content: '\A'; white-space: pre; }
62: .diff-old { text-decoration: line-through; color: silver; background: transparent; }
63: .diff-chg, .diff-new { text-decoration: underline; color: green; background: transparent; }
64: a .diff-new { border-bottom: 1px blue solid; }
65:
66: h2 { page-break-before: always; }
67: h1, h2, h3, h4, h5, h6 { page-break-after: avoid; }
68: h1 + h2, hr + h2.no-toc { page-break-before: auto; }
69:
70: p > span:not([title=""]):not([class="XXX"]):not([class="impl"]):not([class="note"]),
71: li > span:not([title=""]):not([class="XXX"]):not([class="impl"]):not([class="note"]), { border-bottom: solid #9999CC; }
72:
73: div.head { margin: 0 0 1em; padding: 1em 0 0 0; }
74: div.head p { margin: 0; }
75: div.head h1 { margin: 0; }
76: div.head .logo { float: right; margin: 0 1em; }
77: div.head .logo img { border: none } /* remove border from top image */
78: div.head dl { margin: 1em 0; }
79: div.head p.copyright, div.head p.alt { font-size: x-small; font-style: oblique; margin: 0; }
80:
81: body > .toc > li { margin-top: 1em; margin-bottom: 1em; }
82: body > .toc.brief > li { margin-top: 0.35em; margin-bottom: 0.35em; }
83: body > .toc > li > * { margin-bottom: 0.5em; }
84: body > .toc > li > * > li > * { margin-bottom: 0.25em; }
85: .toc, .toc li { list-style: none; }
86:
87: .brief { margin-top: 1em; margin-bottom: 1em; line-height: 1.1; }
88: .brief li { margin: 0; padding: 0; }
89: .brief li p { margin: 0; padding: 0; }
90:
91: .category-list { margin-top: -0.75em; margin-bottom: 1em; line-height: 1.5; }
92: .category-list::before { content: '\21D2\A0'; font-size: 1.2em; font-weight: 900; }
93: .category-list li { display: inline; }
94: .category-list li:not(:last-child)::after { content: ', '; }
95: .category-list li > span, .category-list li > a { text-transform: lowercase; }
96: .category-list li * { text-transform: none; } /* don't affect <code> nested in <a> */
97:
98: .XXX { color: #E50000; background: white; border: solid red; padding: 0.5em; margin: 1em 0; }
99: .XXX > :first-child { margin-top: 0; }
100: p .XXX { line-height: 3em; }
101: .annotation { border: solid thin black; background: #0C479D; color: white; position: relative; margin: 8px 0 20px 0; }
102: .annotation:before { position: absolute; left: 0; top: 0; width: 100%; height: 100%; margin: 6px -6px -6px 6px; background: #333333; z-index: -1; content: ''; }
103: .annotation :link, .annotation :visited { color: inherit; }
104: .annotation :link:hover, .annotation :visited:hover { background: transparent; }
105: .annotation span { border: none ! important; }
106: .note { color: green; background: transparent; font-family: sans-serif; }
107: .warning { color: red; background: transparent; }
108: .note, .warning { font-weight: bolder; font-style: italic; }
109: .note em, .warning em, .note i, .warning i { font-style: normal; }
110: p.note, div.note { padding: 0.5em 2em; }
111: span.note { padding: 0 2em; }
112: .note p:first-child, .warning p:first-child { margin-top: 0; }
113: .note p:last-child, .warning p:last-child { margin-bottom: 0; }
114: .warning:before { font-style: normal; }
115: p.note:before { content: 'Note: '; }
116: p.warning:before { content: '\26A0 Warning! '; }
117:
118: .bookkeeping:before { display: block; content: 'Bookkeeping details'; font-weight: bolder; font-style: italic; }
119: .bookkeeping { font-size: 0.8em; margin: 2em 0; }
120: .bookkeeping p { margin: 0.5em 2em; display: list-item; list-style: square; }
121: .bookkeeping dt { margin: 0.5em 2em 0; }
122: .bookkeeping dd { margin: 0 3em 0.5em; }
123:
124: h4 { position: relative; z-index: 3; }
125: h4 + .element, h4 + div + .element { margin-top: -2.5em; padding-top: 2em; }
126: .element {
127: background: #EEEEFF;
128: color: black;
129: margin: 0 0 1em 0.15em;
130: padding: 0 1em 0.25em 0.75em;
131: border-left: solid #9999FF 0.25em;
132: position: relative;
133: z-index: 1;
134: }
135: .element:before {
136: position: absolute;
137: z-index: 2;
138: top: 0;
139: left: -1.15em;
140: height: 2em;
141: width: 0.9em;
142: background: #EEEEFF;
143: content: ' ';
144: border-style: none none solid solid;
145: border-color: #9999FF;
146: border-width: 0.25em;
147: }
148:
149: .example { display: block; color: #222222; background: #FCFCFC; border-left: double; margin-left: 2em; padding-left: 1em; }
150: td > .example:only-child { margin: 0 0 0 0.1em; }
151:
152: ul.domTree, ul.domTree ul { padding: 0 0 0 1em; margin: 0; }
153: ul.domTree li { padding: 0; margin: 0; list-style: none; position: relative; }
154: ul.domTree li li { list-style: none; }
155: ul.domTree li:first-child::before { position: absolute; top: 0; height: 0.6em; left: -0.75em; width: 0.5em; border-style: none none solid solid; content: ''; border-width: 0.1em; }
156: ul.domTree li:not(:last-child)::after { position: absolute; top: 0; bottom: -0.6em; left: -0.75em; width: 0.5em; border-style: none none solid solid; content: ''; border-width: 0.1em; }
157: ul.domTree span { font-style: italic; font-family: serif; }
158: ul.domTree .t1 code { color: purple; font-weight: bold; }
159: ul.domTree .t2 { font-style: normal; font-family: monospace; }
160: ul.domTree .t2 .name { color: black; font-weight: bold; }
161: ul.domTree .t2 .value { color: blue; font-weight: normal; }
162: ul.domTree .t3 code, .domTree .t4 code, .domTree .t5 code { color: gray; }
163: ul.domTree .t7 code, .domTree .t8 code { color: green; }
164: ul.domTree .t10 code { color: teal; }
165:
166: body.dfnEnabled dfn { cursor: pointer; }
167: .dfnPanel {
168: display: inline;
169: position: absolute;
170: z-index: 10;
171: height: auto;
172: width: auto;
173: padding: 0.5em 0.75em;
174: font: small sans-serif, Droid Sans Fallback;
175: background: #DDDDDD;
176: color: black;
177: border: outset 0.2em;
178: }
179: .dfnPanel * { margin: 0; padding: 0; font: inherit; text-indent: 0; }
180: .dfnPanel :link, .dfnPanel :visited { color: black; }
181: .dfnPanel p { font-weight: bolder; }
182: .dfnPanel * + p { margin-top: 0.25em; }
183: .dfnPanel li { list-style-position: inside; }
184:
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:
1.85 mike 196: .stability {
197: position: fixed;
198: bottom: 0;
199: left: 0; right: 0;
200: margin: 0 auto 0 auto;
201: width: 50%;
202: background: maroon; color: yellow;
203: -webkit-border-radius: 1em 1em 0 0;
204: -moz-border-radius: 1em 1em 0 0;
205: border-radius: 1em 1em 0 0;
206: -moz-box-shadow: 0 0 1em #500;
207: -webkit-box-shadow: 0 0 1em #500;
208: box-shadow: 0 0 1em red;
209: padding: 0.5em 1em;
210: text-align: center;
211: }
212: .stability strong {
213: display: block;
214: }
215: .stability input {
216: appearance: none; margin: 0; border: 0; padding: 0.25em 0.5em; background: transparent; color: black;
217: position: absolute; top: -0.5em; right: 0; font: 1.25em sans-serif; text-align: center;
218: }
219: .stability input:hover {
220: color: white;
221: text-shadow: 0 0 2px black;
222: }
223: .stability input:active {
224: padding: 0.3em 0.45em 0.2em 0.55em;
225: }
226: .stability :link, .stability :visited,
227: .stability :link:hover, .stability :visited:hover {
228: background: transparent;
229: color: white;
230: }
231:
232: </style><link href="http://www.w3.org/StyleSheets/TR/W3C-WD" rel="stylesheet" type="text/css"><meta content="noindex" name="robots"><style type="text/css">
1.1 mike 233:
234: .applies thead th > * { display: block; }
235: .applies thead code { display: block; }
236: .applies tbody th { whitespace: nowrap; }
237: .applies td { text-align: center; }
238: .applies .yes { background: yellow; }
239:
240: .matrix, .matrix td { border: hidden; text-align: right; }
241: .matrix { margin-left: 2em; }
242:
243: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
244: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
245: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
246:
247: td.eg { border-width: thin; text-align: center; }
248:
249: #table-example-1 { border: solid thin; border-collapse: collapse; margin-left: 3em; }
250: #table-example-1 * { font-family: "Essays1743", serif; line-height: 1.01em; }
251: #table-example-1 caption { padding-bottom: 0.5em; }
252: #table-example-1 thead, #table-example-1 tbody { border: none; }
253: #table-example-1 th, #table-example-1 td { border: solid thin; }
254: #table-example-1 th { font-weight: normal; }
255: #table-example-1 td { border-style: none solid; vertical-align: top; }
256: #table-example-1 th { padding: 0.5em; vertical-align: middle; text-align: center; }
257: #table-example-1 tbody tr:first-child td { padding-top: 0.5em; }
258: #table-example-1 tbody tr:last-child td { padding-bottom: 1.5em; }
259: #table-example-1 tbody td:first-child { padding-left: 2.5em; padding-right: 0; width: 9em; }
260: #table-example-1 tbody td:first-child::after { content: leader(". "); }
261: #table-example-1 tbody td { padding-left: 2em; padding-right: 2em; }
262: #table-example-1 tbody td:first-child + td { width: 10em; }
263: #table-example-1 tbody td:first-child + td ~ td { width: 2.5em; }
264: #table-example-1 tbody td:first-child + td + td + td ~ td { width: 1.25em; }
265:
266: .apple-table-examples { border: none; border-collapse: separate; border-spacing: 1.5em 0em; width: 40em; margin-left: 3em; }
267: .apple-table-examples * { font-family: "Times", serif; }
268: .apple-table-examples td, .apple-table-examples th { border: none; white-space: nowrap; padding-top: 0; padding-bottom: 0; }
269: .apple-table-examples tbody th:first-child { border-left: none; width: 100%; }
270: .apple-table-examples thead th:first-child ~ th { font-size: smaller; font-weight: bolder; border-bottom: solid 2px; text-align: center; }
271: .apple-table-examples tbody th::after, .apple-table-examples tfoot th::after { content: leader(". ") }
272: .apple-table-examples tbody th, .apple-table-examples tfoot th { font: inherit; text-align: left; }
273: .apple-table-examples td { text-align: right; vertical-align: top; }
274: .apple-table-examples.e1 tbody tr:last-child td { border-bottom: solid 1px; }
275: .apple-table-examples.e1 tbody + tbody tr:last-child td { border-bottom: double 3px; }
276: .apple-table-examples.e2 th[scope=row] { padding-left: 1em; }
277: .apple-table-examples sup { line-height: 0; }
278:
279: .details-example img { vertical-align: top; }
280:
281: #base64-table {
282: white-space: nowrap;
283: font-size: 0.6em;
284: column-width: 6em;
285: column-count: 5;
286: column-gap: 1em;
287: -moz-column-width: 6em;
288: -moz-column-count: 5;
289: -moz-column-gap: 1em;
290: -webkit-column-width: 6em;
291: -webkit-column-count: 5;
292: -webkit-column-gap: 1em;
293: }
294: #base64-table thead { display: none; }
295: #base64-table * { border: none; }
296: #base64-table tbody td:first-child:after { content: ':'; }
297: #base64-table tbody td:last-child { text-align: right; }
298:
299: #named-character-references-table {
300: white-space: nowrap;
301: font-size: 0.6em;
302: column-width: 30em;
303: column-gap: 1em;
304: -moz-column-width: 30em;
305: -moz-column-gap: 1em;
306: -webkit-column-width: 30em;
307: -webkit-column-gap: 1em;
308: }
309: #named-character-references-table > table > tbody > tr > td:first-child + td,
310: #named-character-references-table > table > tbody > tr > td:last-child { text-align: center; }
311: #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; }
312: #named-character-references-table > table > tbody > tr#entity-CounterClockwiseContourIntegral > td:first-child { font-size: 0.5em; }
313:
314: .glyph.control { color: red; }
315:
316: @font-face {
317: font-family: 'Essays1743';
318: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743.ttf');
319: }
320: @font-face {
321: font-family: 'Essays1743';
322: font-weight: bold;
323: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-Bold.ttf');
324: }
325: @font-face {
326: font-family: 'Essays1743';
327: font-style: italic;
328: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-Italic.ttf');
329: }
330: @font-face {
331: font-family: 'Essays1743';
332: font-style: italic;
333: font-weight: bold;
334: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-BoldItalic.ttf');
335: }
336:
337: </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">
338: function getCookie(name) {
339: var params = location.search.substr(1).split("&");
340: for (var index = 0; index < params.length; index++) {
341: if (params[index] == name)
342: return "1";
343: var data = params[index].split("=");
344: if (data[0] == name)
345: return unescape(data[1]);
346: }
347: var cookies = document.cookie.split("; ");
348: for (var index = 0; index < cookies.length; index++) {
349: var data = cookies[index].split("=");
350: if (data[0] == name)
351: return unescape(data[1]);
352: }
353: return null;
354: }
1.91 mike 355: </script><script src="load-timeout.js"></script>
1.1 mike 356: <script src="link-fixup.js"></script>
1.33 mike 357: <link href="common-input-element-attributes.html" title="4.10.7.3 Common input element attributes" rel="prev">
1.1 mike 358: <link href="index.html#contents" title="Table of contents" rel="contents">
359: <link href="the-button-element.html" title="4.10.8 The button element" rel="next">
1.22 mike 360: </head><body onload="fixBrokenLink();" class="split chapter"><div class="head" id="head">
1.1 mike 361: <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
362:
363: <h1>HTML5</h1>
1.90 mike 364: <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 1.5610.</p>
1.85 mike 365:
1.90 mike 366: <h2 class="no-num no-toc" id="w3c-working-draft-20-april-2012">W3C Working Draft 20 April 2012</h2>
1.85 mike 367: </div>
1.1 mike 368:
1.85 mike 369: <nav class="prev_next">
1.33 mike 370: <a href="common-input-element-attributes.html">← 4.10.7.3 Common input element attributes</a> –
1.1 mike 371: <a href="index.html#contents">Table of contents</a> –
372: <a href="the-button-element.html">4.10.8 The button element →</a>
1.33 mike 373: <ol class="toc"><li><ol><li><ol><li><ol><li><a href="common-input-element-apis.html#common-input-element-apis"><span class="secno">4.10.7.4 </span>Common <code>input</code> element APIs</a></li><li><a href="common-input-element-apis.html#common-event-behaviors"><span class="secno">4.10.7.5 </span>Common event behaviors</a></li></ol></li></ol></li></ol></li></ol></nav>
1.1 mike 374:
1.85 mike 375: <h5 id="common-input-element-apis"><span class="secno">4.10.7.4 </span>Common <code><a href="the-input-element.html#the-input-element">input</a></code> element APIs</h5>
376:
377: <dl class="domintro"><dt><var title="">input</var> . <code title="dom-input-value"><a href="#dom-input-value">value</a></code> [ = <var title="">value</var> ]</dt>
1.1 mike 378:
379: <dd>
380:
381: <p>Returns the current <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a>
382: of the form control.</p>
383:
384: <p>Can be set, to change the value.</p>
385:
386: <p>Throws an <code><a href="infrastructure.html#invalidstateerror">InvalidStateError</a></code> exception if it is
387: set to any value other than the empty string when the control is a
388: file upload control.</p>
389:
390: </dd>
391:
392: <dt><var title="">input</var> . <code title="dom-input-checked"><a href="#dom-input-checked">checked</a></code> [ = <var title="">value</var> ]</dt>
393:
394: <dd>
395:
396: <p>Returns the current <a href="attributes-common-to-form-controls.html#concept-fe-checked" title="concept-fe-checked">checkedness</a> of the form
397: control.</p>
398:
399: <p>Can be set, to change the <a href="attributes-common-to-form-controls.html#concept-fe-checked" title="concept-fe-checked">checkedness</a>.</p>
400:
401: </dd>
402:
403: <dt><var title="">input</var> . <code title="dom-input-files"><a href="#dom-input-files">files</a></code></dt>
404:
405: <dd>
406:
1.8 mike 407: <p>Returns a <code><a href="infrastructure.html#filelist">FileList</a></code> object listing the <a href="states-of-the-type-attribute.html#concept-input-type-file-selected" title="concept-input-type-file-selected">selected files</a> of
1.1 mike 408: the form control.</p>
409:
410: <p>Returns null if the control isn't a file control.</p>
411:
412: </dd>
413:
414: <dt><var title="">input</var> . <code title="dom-input-valueAsDate"><a href="#dom-input-valueasdate">valueAsDate</a></code> [ = <var title="">value</var> ]</dt>
415:
416: <dd>
417:
418: <p>Returns a <code>Date</code> object representing the form
419: control's <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a>, if
420: applicable; otherwise, returns null.</p>
421:
422: <p>Can be set, to change the value.</p>
423:
424: <p>Throws an <code><a href="infrastructure.html#invalidstateerror">InvalidStateError</a></code> exception if the
425: control isn't date- or time-based.</p>
426:
427: </dd>
428:
429: <dt><var title="">input</var> . <code title="dom-input-valueAsNumber"><a href="#dom-input-valueasnumber">valueAsNumber</a></code> [ = <var title="">value</var> ]</dt>
430:
431: <dd>
432:
433: <p>Returns a number representing the form control's <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a>, if applicable; otherwise,
1.47 mike 434: returns NaN.</p>
1.1 mike 435:
436: <p>Can be set, to change the value.</p>
437:
438: <p>Throws an <code><a href="infrastructure.html#invalidstateerror">InvalidStateError</a></code> exception if the
439: control is neither date- or time-based nor numeric.</p>
440:
441: </dd>
442:
443: <dt><var title="">input</var> . <code title="dom-input-stepUp"><a href="#dom-input-stepup">stepUp</a></code>( [ <var title="">n</var> ] )</dt>
444: <dt><var title="">input</var> . <code title="dom-input-stepDown"><a href="#dom-input-stepdown">stepDown</a></code>( [ <var title="">n</var> ] )</dt>
445:
446: <dd>
447:
448: <p>Changes the form control's <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a> by the value given in the
449: <code title="attr-input-step"><a href="common-input-element-attributes.html#attr-input-step">step</a></code> attribute, multiplied by
450: <var title="">n</var>. The default value for <var title="">n</var>
451: is 1.</p>
452:
453: <p>Throws <code><a href="infrastructure.html#invalidstateerror">InvalidStateError</a></code> exception if the control
454: is neither date- or time-based nor numeric, if the <code title="attr-input-step"><a href="common-input-element-attributes.html#attr-input-step">step</a></code> attribute's value is "<code title="">any</code>", if the current <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a> could not be parsed, or if
455: stepping in the given direction by the given amount would take the
456: value out of range.</p>
457:
458: </dd>
459:
460: <dt><var title="">input</var> . <code title="dom-input-list"><a href="#dom-input-list">list</a></code></dt>
461:
462: <dd>
463:
464: <p>Returns the <code><a href="the-datalist-element.html#the-datalist-element">datalist</a></code> element indicated by the
465: <code title="attr-input-list"><a href="common-input-element-attributes.html#attr-input-list">list</a></code> attribute.</p>
466:
467: </dd>
468:
469: </dl><div class="impl">
470:
471: <p>The <dfn id="dom-input-value" title="dom-input-value"><code>value</code></dfn> IDL
472: attribute allows scripts to manipulate the <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a> of an <code><a href="the-input-element.html#the-input-element">input</a></code>
473: element. The attribute is in one of the following modes, which
474: define its behavior:</p>
475:
476: <dl><dt><dfn id="dom-input-value-value" title="dom-input-value-value">value</dfn>
477:
478: </dt><dd>
479:
480: <p>On getting, it must return the current <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a> of the element. On setting,
481: it must set the element's <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a> to the new value, set the
482: element's <a href="the-input-element.html#concept-input-value-dirty-flag" title="concept-input-value-dirty-flag">dirty value
483: flag</a> to true, invoke the <a href="the-input-element.html#value-sanitization-algorithm">value sanitization
484: algorithm</a>, if the element's <code title="attr-input-type"><a href="the-input-element.html#attr-input-type">type</a></code> attribute's current state
485: defines one, and then, if the element has a text entry cursor
486: position, should move the text entry cursor position to the end of
487: the text field, unselecting any selected text and resetting the
488: selection direction to <i>none</i>.</p>
489:
490: </dd>
491:
492: <dt><dfn id="dom-input-value-default" title="dom-input-value-default">default</dfn>
493:
494: </dt><dd>
495:
496: <p>On getting, if the element has a <code title="attr-input-value"><a href="the-input-element.html#attr-input-value">value</a></code> attribute, it must return
497: that attribute's value; otherwise, it must return the empty
498: string. On setting, it must set the element's <code title="attr-input-value"><a href="the-input-element.html#attr-input-value">value</a></code> attribute to the new
499: value.</p>
500:
501: </dd>
502:
503: <dt><dfn id="dom-input-value-default-on" title="dom-input-value-default-on">default/on</dfn>
504:
505: </dt><dd>
506:
507: <p>On getting, if the element has a <code title="attr-input-value"><a href="the-input-element.html#attr-input-value">value</a></code> attribute, it must return
508: that attribute's value; otherwise, it must return the string
509: "<code title="">on</code>". On setting, it must set the element's
510: <code title="attr-input-value"><a href="the-input-element.html#attr-input-value">value</a></code> attribute to the new
511: value.</p>
512:
513: </dd>
514:
515: <dt><dfn id="dom-input-value-filename" title="dom-input-value-filename">filename</dfn>
516:
517: </dt><dd id="fakepath-orly">
518:
519: <p>On getting, it must return the string "<code title="">C:\fakepath\</code>" followed by the filename of the
1.8 mike 520: first file in the list of <a href="states-of-the-type-attribute.html#concept-input-type-file-selected" title="concept-input-type-file-selected">selected files</a>, if
1.1 mike 521: any, or the empty string if the list is empty. On setting, if the
1.8 mike 522: new value is the empty string, it must empty the list of <a href="states-of-the-type-attribute.html#concept-input-type-file-selected" title="concept-input-type-file-selected">selected files</a>;
1.1 mike 523: otherwise, it must throw an <code><a href="infrastructure.html#invalidstateerror">InvalidStateError</a></code>
524: exception.</p>
525:
526: <p class="note">This "fakepath" requirement is a sad accident of
1.8 mike 527: history. See <a href="states-of-the-type-attribute.html#fakepath-srsly">the example in the File
1.1 mike 528: Upload state section</a> for more information.</p>
529:
530: </dd>
531:
532: </dl><hr><p>The <dfn id="dom-input-checked" title="dom-input-checked"><code>checked</code></dfn> IDL
533: attribute allows scripts to manipulate the <a href="attributes-common-to-form-controls.html#concept-fe-checked" title="concept-fe-checked">checkedness</a> of an
534: <code><a href="the-input-element.html#the-input-element">input</a></code> element. On getting, it must return the current
535: <a href="attributes-common-to-form-controls.html#concept-fe-checked" title="concept-fe-checked">checkedness</a> of the element;
536: and on setting, it must set the element's <a href="attributes-common-to-form-controls.html#concept-fe-checked" title="concept-fe-checked">checkedness</a> to the new value and
537: set the element's <a href="the-input-element.html#concept-input-checked-dirty-flag" title="concept-input-checked-dirty-flag">dirty checkedness
538: flag</a> to true.</p>
539:
540: <hr><p>The <dfn id="dom-input-files" title="dom-input-files"><code>files</code></dfn> IDL
1.8 mike 541: attribute allows scripts to access the element's <a href="states-of-the-type-attribute.html#concept-input-type-file-selected" title="concept-input-type-file-selected">selected files</a>. On
1.1 mike 542: getting, if the IDL attribute applies, it must return a
1.8 mike 543: <code><a href="infrastructure.html#filelist">FileList</a></code> object that represents the current <a href="states-of-the-type-attribute.html#concept-input-type-file-selected" title="concept-input-type-file-selected">selected files</a>. The
544: same object must be returned until the list of <a href="states-of-the-type-attribute.html#concept-input-type-file-selected" title="concept-input-type-file-selected">selected files</a>
1.1 mike 545: changes. If the IDL attribute does not apply, then it must instead
546: return null. <a href="references.html#refsFILEAPI">[FILEAPI]</a></p>
547:
548: <hr><p>The <dfn id="dom-input-valueasdate" title="dom-input-valueAsDate"><code>valueAsDate</code></dfn> IDL
549: attribute represents the <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a> of the element, interpreted
550: as a date.</p>
551:
552: <p>On getting, if the <code title="dom-input-valueAsDate"><a href="#dom-input-valueasdate">valueAsDate</a></code> attribute does not
553: apply, as defined for the <code><a href="the-input-element.html#the-input-element">input</a></code> element's <code title="attr-input-type"><a href="the-input-element.html#attr-input-type">type</a></code> attribute's current state, then
554: return null. Otherwise, run the <a href="the-input-element.html#concept-input-value-string-date" title="concept-input-value-string-date">algorithm to convert a
555: string to a <code>Date</code> object</a> defined for that state;
556: if the algorithm returned a <code>Date</code> object, then return
557: it, otherwise, return null.</p>
558:
559: <p>On setting, if the <code title="dom-input-valueAsDate"><a href="#dom-input-valueasdate">valueAsDate</a></code> attribute does not
560: apply, as defined for the <code><a href="the-input-element.html#the-input-element">input</a></code> element's <code title="attr-input-type"><a href="the-input-element.html#attr-input-type">type</a></code> attribute's current state, then
1.34 mike 561: throw an <code><a href="infrastructure.html#invalidstateerror">InvalidStateError</a></code> exception; otherwise, if the
562: new value is null or a <code>Date</code> object representing the NaN
563: time value, then set the <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a>
564: of the element to the empty string; otherwise, run the <a href="the-input-element.html#concept-input-value-date-string" title="concept-input-value-date-string">algorithm to convert a
1.1 mike 565: <code>Date</code> object to a string</a>, as defined for that
566: state, on the new value, and set the <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a> of the element to resulting
567: string.</p>
568:
569: <hr><p>The <dfn id="dom-input-valueasnumber" title="dom-input-valueAsNumber"><code>valueAsNumber</code></dfn> IDL
570: attribute represents the <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a>
571: of the element, interpreted as a number.</p>
572:
573: <p>On getting, if the <code title="dom-input-valueAsNumber"><a href="#dom-input-valueasnumber">valueAsNumber</a></code> attribute does
574: not apply, as defined for the <code><a href="the-input-element.html#the-input-element">input</a></code> element's <code title="attr-input-type"><a href="the-input-element.html#attr-input-type">type</a></code> attribute's current state, then
575: return a Not-a-Number (NaN) value. Otherwise, if the <code title="dom-input-valueAsDate"><a href="#dom-input-valueasdate">valueAs<em>Date</em></a></code>
576: attribute applies, run the <a href="the-input-element.html#concept-input-value-string-date" title="concept-input-value-string-date">algorithm to convert a
577: string to a <code>Date</code> object</a> defined for that state;
578: if the algorithm returned a <code>Date</code> object, then return
579: the <i>time value</i> of the object (the number of milliseconds from
580: midnight UTC the morning of 1970-01-01 to the time represented by
581: the <code>Date</code> object), otherwise, return a Not-a-Number
582: (NaN) value. Otherwise, run the <a href="the-input-element.html#concept-input-value-string-number" title="concept-input-value-string-number">algorithm to convert a
583: string to a number</a> defined for that state; if the algorithm
584: returned a number, then return it, otherwise, return a Not-a-Number
585: (NaN) value.</p>
586:
587: <p>On setting, if the <code title="dom-input-valueAsNumber"><a href="#dom-input-valueasnumber">valueAsNumber</a></code> attribute does
588: not apply, as defined for the <code><a href="the-input-element.html#the-input-element">input</a></code> element's <code title="attr-input-type"><a href="the-input-element.html#attr-input-type">type</a></code> attribute's current state, then
589: throw an <code><a href="infrastructure.html#invalidstateerror">InvalidStateError</a></code> exception. Otherwise, if
590: the <code title="dom-input-valueAsDate"><a href="#dom-input-valueasdate">valueAs<em>Date</em></a></code>
591: attribute applies, run the <a href="the-input-element.html#concept-input-value-date-string" title="concept-input-value-date-string">algorithm to convert a
592: <code>Date</code> object to a string</a> defined for that state,
593: passing it a <code>Date</code> object whose <i>time value</i> is the
594: new value, and set the <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a>
595: of the element to resulting string. Otherwise, run the <a href="the-input-element.html#concept-input-value-number-string" title="concept-input-value-number-string">algorithm to convert a
596: number to a string</a>, as defined for that state, on the new
597: value, and set the <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a> of
598: the element to resulting string.</p>
599:
600: <hr><p>The <dfn id="dom-input-stepdown" title="dom-input-stepDown"><code>stepDown(<var title="">n</var>)</code></dfn> and <dfn id="dom-input-stepup" title="dom-input-stepUp"><code>stepUp(<var title="">n</var>)</code></dfn> methods, when invoked, must run the
601: following algorithm:</p>
602:
603: <ol><li><p>If the <code title="dom-input-stepDown"><a href="#dom-input-stepdown">stepDown()</a></code> and
604: <code title="dom-input-stepUp"><a href="#dom-input-stepup">stepUp()</a></code> methods do not
605: apply, as defined for the <code><a href="the-input-element.html#the-input-element">input</a></code> element's <code title="attr-input-type"><a href="the-input-element.html#attr-input-type">type</a></code> attribute's current state, then
606: throw an <code><a href="infrastructure.html#invalidstateerror">InvalidStateError</a></code> exception, and abort these
607: steps.</p></li>
608:
609: <li><p>If the element has no <a href="common-input-element-attributes.html#concept-input-step" title="concept-input-step">allowed value step</a>, then throw an
610: <code><a href="infrastructure.html#invalidstateerror">InvalidStateError</a></code> exception, and abort these
611: steps.</p></li>
612:
613: <li><p>If applying the <a href="the-input-element.html#concept-input-value-string-number" title="concept-input-value-string-number">algorithm to convert a
614: string to a number</a> to the string given by the element's
615: <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a> results in an error,
616: then throw an <code><a href="infrastructure.html#invalidstateerror">InvalidStateError</a></code> exception, and abort
617: these steps; otherwise, let <var title="">value</var> be the result
618: of that algorithm.</p></li>
619:
620: <li><p>Let <var title="">n</var> be the argument, or 1 if the
621: argument was omitted.</p></li>
622:
623: <li><p>Let <var title="">delta</var> be the <a href="common-input-element-attributes.html#concept-input-step" title="concept-input-step">allowed value step</a> multiplied by
624: <var title="">n</var>.</p></li>
625:
626: <li><p>If the method invoked was the <code title="dom-input-stepDown"><a href="#dom-input-stepdown">stepDown()</a></code> method, negate <var title="">delta</var>.</p></li>
627:
628: <li><p>Let <var title="">value</var> be the result of adding <var title="">delta</var> to <var title="">value</var>.</p></li>
629: <li><p>If the element has a <a href="common-input-element-attributes.html#concept-input-min" title="concept-input-min">minimum</a>, and the <var title="">value</var> is less than that <a href="common-input-element-attributes.html#concept-input-min" title="concept-input-min">minimum</a>, then throw a
630: <code><a href="infrastructure.html#invalidstateerror">InvalidStateError</a></code> exception.</p></li>
631:
632: <li><p>If the element has a <a href="common-input-element-attributes.html#concept-input-max" title="concept-input-max">maximum</a>, and the <var title="">value</var> is greater than that <a href="common-input-element-attributes.html#concept-input-max" title="concept-input-max">maximum</a>, then throw a
633: <code><a href="infrastructure.html#invalidstateerror">InvalidStateError</a></code> exception.</p></li>
634:
635: <li><p>Let <var title="">value as string</var> be the result of
636: running the <a href="the-input-element.html#concept-input-value-number-string" title="concept-input-value-number-string">algorithm to convert a
637: number to a string</a>, as defined for the <code><a href="the-input-element.html#the-input-element">input</a></code>
638: element's <code title="attr-input-type"><a href="the-input-element.html#attr-input-type">type</a></code> attribute's
639: current state, on <var title="">value</var>.</p></li>
640:
641: <li><p>Set the <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a> of the
642: element to <var title="">value as string</var>.</p></li>
643:
644: </ol><hr><p>The <dfn id="dom-input-list" title="dom-input-list"><code>list</code></dfn> IDL
645: attribute must return the current <a href="common-input-element-attributes.html#concept-input-list" title="concept-input-list">suggestions source element</a>, if
646: any, or null otherwise.</p>
647:
1.85 mike 648: </div>
649:
650:
651:
652: <div class="impl">
1.1 mike 653:
1.33 mike 654: <h5 id="common-event-behaviors"><span class="secno">4.10.7.5 </span>Common event behaviors</h5>
1.1 mike 655:
656: <p>When the <dfn id="event-input-input" title="event-input-input"><code>input</code></dfn>
657: event applies, any time the user causes the element's <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a> to change, the user agent must
658: <a href="webappapis.html#queue-a-task">queue a task</a> to <a href="webappapis.html#fire-a-simple-event">fire a simple event</a> that
659: bubbles named <code title="event-input">input</code> at the
660: <code><a href="the-input-element.html#the-input-element">input</a></code> element. User agents may wait for a suitable
661: break in the user's interaction before queuing the task; for
662: example, a user agent could wait for the user to have not hit a key
663: for 100ms, so as to only fire the event when the user pauses,
664: instead of continuously for each keystroke.</p>
1.4 mike 665:
1.1 mike 666: <p class="example">Examples of a user changing the element's <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a> would include the user typing
667: into a text field, pasting a new value into the field, or undoing an
668: edit in that field. Some user interactions do not cause changes to
669: the value, e.g. hitting the "delete" key in an empty text field, or
670: replacing some text in the field with text from the clipboard that
671: happens to be exactly the same text.</p>
672:
673: <p>When the <dfn id="event-input-change" title="event-input-change"><code>change</code></dfn> event applies,
674: if the element does not have an <a href="content-models.html#activation-behavior">activation behavior</a>
675: defined but uses a user interface that involves an explicit commit
676: action, then any time the user commits a change to the element's
1.8 mike 677: <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a> or list of <a href="states-of-the-type-attribute.html#concept-input-type-file-selected" title="concept-input-type-file-selected">selected files</a>, the
1.1 mike 678: user agent must <a href="webappapis.html#queue-a-task">queue a task</a> to <a href="webappapis.html#fire-a-simple-event">fire a simple
679: event</a> that bubbles named <code title="event-change">change</code> at the <code><a href="the-input-element.html#the-input-element">input</a></code>
680: element.</p>
681:
682: <p class="example">An example of a user interface with a commit
1.8 mike 683: action would be a <a href="states-of-the-type-attribute.html#file-upload-state-type-file" title="attr-input-type-file">File
1.1 mike 684: Upload</a> control that consists of a single button that brings
685: up a file selection dialog: when the dialog is closed, if that the
1.8 mike 686: <a href="states-of-the-type-attribute.html#concept-input-type-file-selected" title="concept-input-type-file-selected">file selection</a>
687: changed as a result, then the user has committed a new <a href="states-of-the-type-attribute.html#concept-input-type-file-selected" title="concept-input-type-file-selected">file selection</a>.</p>
1.1 mike 688:
689: <p class="example">Another example of a user interface with a commit
1.8 mike 690: action would be a <a href="states-of-the-type-attribute.html#date-state-type-date" title="attr-input-type-date">Date</a>
1.1 mike 691: control that allows both text-based user input and user selection
692: from a drop-down calendar: while text input might not have an
693: explicit commit step, selecting a date from the drop down calendar
694: and then dismissing the drop down would be a commit action.</p>
695:
696: <p>When the user agent changes the element's <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a> on behalf of the user (e.g. as
697: part of a form prefilling feature), the user agent must follow these
698: steps:</p>
699:
700: <ol><li>If the <code title="event-input-input"><a href="#event-input-input">input</a></code> event
701: applies, <a href="webappapis.html#queue-a-task">queue a task</a> to <a href="webappapis.html#fire-a-simple-event">fire a simple
702: event</a> that bubbles named <code title="event-input">input</code> at the <code><a href="the-input-element.html#the-input-element">input</a></code>
703: element.</li>
704:
705: <li>If the <code title="event-input-change"><a href="#event-input-change">change</a></code> event
706: applies, <a href="webappapis.html#queue-a-task">queue a task</a> to <a href="webappapis.html#fire-a-simple-event">fire a simple
707: event</a> that bubbles named <code title="event-change">change</code> at the <code><a href="the-input-element.html#the-input-element">input</a></code>
708: element.</li>
709:
710: </ol><p class="note">In addition, when the <code title="event-input-change"><a href="#event-input-change">change</a></code> event applies, <code title="event-change">change</code> events can also be fired as part
711: of the element's <a href="content-models.html#activation-behavior">activation behavior</a> and as part of the
712: <a href="editing.html#unfocusing-steps">unfocusing steps</a>.</p>
713:
714: <p>The <a href="webappapis.html#task-source">task source</a> for these <a href="webappapis.html#concept-task" title="concept-task">tasks</a> is the <a href="webappapis.html#user-interaction-task-source">user interaction task
715: source</a>.</p>
716:
1.85 mike 717: </div>
718:
719:
720:
721: </body></html>
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