Annotation of html5/spec-author-view/the-script-element.html, revision 1.121
1.104 mike 1: <!doctype html>
1.106 mike 2: <html lang="en-US-x-Hixie"><meta content="text/html; charset=utf-8" http-equiv="Content-Type"><title>4.3.1 The script element — HTML5: Edition for Web Authors</title><link href="whatwg.css" rel="stylesheet"><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; }
1.107 mike 21: i, em { font-style: italic; }
1.1 mike 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; }
1.111 mike 43: img.extra, p.overview { float: right; }
1.110 mike 44: pre.idl { border: solid thin; background: #EEEEEE; color: black; padding: 0.5em 1em; position: relative; }
1.1 mike 45: pre.idl :link, pre.idl :visited { color: inherit; background: transparent; }
1.110 mike 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 }
1.1 mike 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.switch { padding-left: 2em; }
55: dl.switch > dt { text-indent: -1.5em; }
56: dl.switch > dt:before { content: '\21AA'; padding: 0 0.5em 0 0; display: inline-block; width: 1em; text-align: right; line-height: 0.5em; }
57: dl.triple { padding: 0 0 0 1em; }
58: dl.triple dt, dl.triple dd { margin: 0; display: inline }
59: dl.triple dt:after { content: ':'; }
60: dl.triple dd:after { content: '\A'; white-space: pre; }
61: .diff-old { text-decoration: line-through; color: silver; background: transparent; }
62: .diff-chg, .diff-new { text-decoration: underline; color: green; background: transparent; }
63: a .diff-new { border-bottom: 1px blue solid; }
64:
65: h2 { page-break-before: always; }
66: h1, h2, h3, h4, h5, h6 { page-break-after: avoid; }
67: h1 + h2, hr + h2.no-toc { page-break-before: auto; }
68:
69: p > span:not([title=""]):not([class="XXX"]):not([class="impl"]):not([class="note"]),
70: li > span:not([title=""]):not([class="XXX"]):not([class="impl"]):not([class="note"]), { border-bottom: solid #9999CC; }
71:
72: div.head { margin: 0 0 1em; padding: 1em 0 0 0; }
73: div.head p { margin: 0; }
74: div.head h1 { margin: 0; }
75: div.head .logo { float: right; margin: 0 1em; }
76: div.head .logo img { border: none } /* remove border from top image */
77: div.head dl { margin: 1em 0; }
78: div.head p.copyright, div.head p.alt { font-size: x-small; font-style: oblique; margin: 0; }
79:
80: body > .toc > li { margin-top: 1em; margin-bottom: 1em; }
81: body > .toc.brief > li { margin-top: 0.35em; margin-bottom: 0.35em; }
82: body > .toc > li > * { margin-bottom: 0.5em; }
83: body > .toc > li > * > li > * { margin-bottom: 0.25em; }
84: .toc, .toc li { list-style: none; }
85:
86: .brief { margin-top: 1em; margin-bottom: 1em; line-height: 1.1; }
87: .brief li { margin: 0; padding: 0; }
88: .brief li p { margin: 0; padding: 0; }
89:
90: .category-list { margin-top: -0.75em; margin-bottom: 1em; line-height: 1.5; }
91: .category-list::before { content: '\21D2\A0'; font-size: 1.2em; font-weight: 900; }
92: .category-list li { display: inline; }
93: .category-list li:not(:last-child)::after { content: ', '; }
94: .category-list li > span, .category-list li > a { text-transform: lowercase; }
95: .category-list li * { text-transform: none; } /* don't affect <code> nested in <a> */
96:
97: .XXX { color: #E50000; background: white; border: solid red; padding: 0.5em; margin: 1em 0; }
98: .XXX > :first-child { margin-top: 0; }
99: p .XXX { line-height: 3em; }
100: .annotation { border: solid thin black; background: #0C479D; color: white; position: relative; margin: 8px 0 20px 0; }
101: .annotation:before { position: absolute; left: 0; top: 0; width: 100%; height: 100%; margin: 6px -6px -6px 6px; background: #333333; z-index: -1; content: ''; }
102: .annotation :link, .annotation :visited { color: inherit; }
103: .annotation :link:hover, .annotation :visited:hover { background: transparent; }
104: .annotation span { border: none ! important; }
105: .note { color: green; background: transparent; font-family: sans-serif; }
106: .warning { color: red; background: transparent; }
107: .note, .warning { font-weight: bolder; font-style: italic; }
1.107 mike 108: .note em, .warning em, .note i, .warning i { font-style: normal; }
1.1 mike 109: p.note, div.note { padding: 0.5em 2em; }
110: span.note { padding: 0 2em; }
111: .note p:first-child, .warning p:first-child { margin-top: 0; }
112: .note p:last-child, .warning p:last-child { margin-bottom: 0; }
113: .warning:before { font-style: normal; }
114: p.note:before { content: 'Note: '; }
115: p.warning:before { content: '\26A0 Warning! '; }
116:
117: .bookkeeping:before { display: block; content: 'Bookkeeping details'; font-weight: bolder; font-style: italic; }
118: .bookkeeping { font-size: 0.8em; margin: 2em 0; }
119: .bookkeeping p { margin: 0.5em 2em; display: list-item; list-style: square; }
120: .bookkeeping dt { margin: 0.5em 2em 0; }
121: .bookkeeping dd { margin: 0 3em 0.5em; }
122:
123: h4 { position: relative; z-index: 3; }
124: h4 + .element, h4 + div + .element { margin-top: -2.5em; padding-top: 2em; }
125: .element {
126: background: #EEEEFF;
127: color: black;
128: margin: 0 0 1em 0.15em;
129: padding: 0 1em 0.25em 0.75em;
130: border-left: solid #9999FF 0.25em;
131: position: relative;
132: z-index: 1;
133: }
134: .element:before {
135: position: absolute;
136: z-index: 2;
137: top: 0;
138: left: -1.15em;
139: height: 2em;
140: width: 0.9em;
141: background: #EEEEFF;
142: content: ' ';
143: border-style: none none solid solid;
144: border-color: #9999FF;
145: border-width: 0.25em;
146: }
147:
148: .example { display: block; color: #222222; background: #FCFCFC; border-left: double; margin-left: 2em; padding-left: 1em; }
149: td > .example:only-child { margin: 0 0 0 0.1em; }
150:
151: ul.domTree, ul.domTree ul { padding: 0 0 0 1em; margin: 0; }
152: ul.domTree li { padding: 0; margin: 0; list-style: none; position: relative; }
153: ul.domTree li li { list-style: none; }
154: 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; }
155: 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; }
156: ul.domTree span { font-style: italic; font-family: serif; }
157: ul.domTree .t1 code { color: purple; font-weight: bold; }
158: ul.domTree .t2 { font-style: normal; font-family: monospace; }
159: ul.domTree .t2 .name { color: black; font-weight: bold; }
160: ul.domTree .t2 .value { color: blue; font-weight: normal; }
161: ul.domTree .t3 code, .domTree .t4 code, .domTree .t5 code { color: gray; }
162: ul.domTree .t7 code, .domTree .t8 code { color: green; }
163: ul.domTree .t10 code { color: teal; }
164:
165: body.dfnEnabled dfn { cursor: pointer; }
166: .dfnPanel {
167: display: inline;
168: position: absolute;
169: z-index: 10;
170: height: auto;
171: width: auto;
172: padding: 0.5em 0.75em;
173: font: small sans-serif, Droid Sans Fallback;
174: background: #DDDDDD;
175: color: black;
176: border: outset 0.2em;
177: }
178: .dfnPanel * { margin: 0; padding: 0; font: inherit; text-indent: 0; }
179: .dfnPanel :link, .dfnPanel :visited { color: black; }
180: .dfnPanel p { font-weight: bolder; }
181: .dfnPanel * + p { margin-top: 0.25em; }
182: .dfnPanel li { list-style-position: inside; }
183:
184: #configUI { position: absolute; z-index: 20; top: 10em; right: 1em; width: 11em; font-size: small; }
185: #configUI p { margin: 0.5em 0; padding: 0.3em; background: #EEEEEE; color: black; border: inset thin; }
186: #configUI p label { display: block; }
187: #configUI #updateUI, #configUI .loginUI { text-align: center; }
188: #configUI input[type=button] { display: block; margin: auto; }
189:
190: fieldset { margin: 1em; padding: 0.5em 1em; }
191: fieldset > legend + * { margin-top: 0; }
192: fieldset > :last-child { margin-bottom: 0; }
193: fieldset p { margin: 0.5em 0; }
194:
1.105 mike 195: </style><link href="style.css" rel="stylesheet"><link href="http://www.w3.org/StyleSheets/TR/W3C-ED" rel="stylesheet" type="text/css"><script src="link-fixup.js" type="text/javascript"></script><style type="text/css">
1.1 mike 196:
197: .applies thead th > * { display: block; }
198: .applies thead code { display: block; }
199: .applies tbody th { whitespace: nowrap; }
200: .applies td { text-align: center; }
201: .applies .yes { background: yellow; }
202:
203: .matrix, .matrix td { border: hidden; text-align: right; }
204: .matrix { margin-left: 2em; }
205:
206: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
207: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
208: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
209:
210: td.eg { border-width: thin; text-align: center; }
211:
212: #table-example-1 { border: solid thin; border-collapse: collapse; margin-left: 3em; }
213: #table-example-1 * { font-family: "Essays1743", serif; line-height: 1.01em; }
214: #table-example-1 caption { padding-bottom: 0.5em; }
215: #table-example-1 thead, #table-example-1 tbody { border: none; }
216: #table-example-1 th, #table-example-1 td { border: solid thin; }
217: #table-example-1 th { font-weight: normal; }
218: #table-example-1 td { border-style: none solid; vertical-align: top; }
219: #table-example-1 th { padding: 0.5em; vertical-align: middle; text-align: center; }
220: #table-example-1 tbody tr:first-child td { padding-top: 0.5em; }
221: #table-example-1 tbody tr:last-child td { padding-bottom: 1.5em; }
222: #table-example-1 tbody td:first-child { padding-left: 2.5em; padding-right: 0; width: 9em; }
223: #table-example-1 tbody td:first-child::after { content: leader(". "); }
224: #table-example-1 tbody td { padding-left: 2em; padding-right: 2em; }
225: #table-example-1 tbody td:first-child + td { width: 10em; }
226: #table-example-1 tbody td:first-child + td ~ td { width: 2.5em; }
227: #table-example-1 tbody td:first-child + td + td + td ~ td { width: 1.25em; }
228:
229: .apple-table-examples { border: none; border-collapse: separate; border-spacing: 1.5em 0em; width: 40em; margin-left: 3em; }
230: .apple-table-examples * { font-family: "Times", serif; }
231: .apple-table-examples td, .apple-table-examples th { border: none; white-space: nowrap; padding-top: 0; padding-bottom: 0; }
232: .apple-table-examples tbody th:first-child { border-left: none; width: 100%; }
233: .apple-table-examples thead th:first-child ~ th { font-size: smaller; font-weight: bolder; border-bottom: solid 2px; text-align: center; }
234: .apple-table-examples tbody th::after, .apple-table-examples tfoot th::after { content: leader(". ") }
235: .apple-table-examples tbody th, .apple-table-examples tfoot th { font: inherit; text-align: left; }
236: .apple-table-examples td { text-align: right; vertical-align: top; }
237: .apple-table-examples.e1 tbody tr:last-child td { border-bottom: solid 1px; }
238: .apple-table-examples.e1 tbody + tbody tr:last-child td { border-bottom: double 3px; }
239: .apple-table-examples.e2 th[scope=row] { padding-left: 1em; }
240: .apple-table-examples sup { line-height: 0; }
241:
242: .details-example img { vertical-align: top; }
243:
244: #base64-table {
245: white-space: nowrap;
246: font-size: 0.6em;
247: column-width: 6em;
248: column-count: 5;
249: column-gap: 1em;
250: -moz-column-width: 6em;
251: -moz-column-count: 5;
252: -moz-column-gap: 1em;
253: -webkit-column-width: 6em;
254: -webkit-column-count: 5;
255: -webkit-column-gap: 1em;
256: }
257: #base64-table thead { display: none; }
258: #base64-table * { border: none; }
259: #base64-table tbody td:first-child:after { content: ':'; }
260: #base64-table tbody td:last-child { text-align: right; }
261:
262: #named-character-references-table {
263: white-space: nowrap;
264: font-size: 0.6em;
265: column-width: 30em;
266: column-gap: 1em;
267: -moz-column-width: 30em;
268: -moz-column-gap: 1em;
269: -webkit-column-width: 30em;
270: -webkit-column-gap: 1em;
271: }
272: #named-character-references-table > table > tbody > tr > td:first-child + td,
273: #named-character-references-table > table > tbody > tr > td:last-child { text-align: center; }
274: #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; }
275: #named-character-references-table > table > tbody > tr#entity-CounterClockwiseContourIntegral > td:first-child { font-size: 0.5em; }
276:
277: .glyph.control { color: red; }
278:
279: @font-face {
280: font-family: 'Essays1743';
281: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743.ttf');
282: }
283: @font-face {
284: font-family: 'Essays1743';
285: font-weight: bold;
286: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-Bold.ttf');
287: }
288: @font-face {
289: font-family: 'Essays1743';
290: font-style: italic;
291: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-Italic.ttf');
292: }
293: @font-face {
294: font-family: 'Essays1743';
295: font-style: italic;
296: font-weight: bold;
297: src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-BoldItalic.ttf');
298: }
299:
300: </style><script type="text/javascript">
301: function getCookie(name) {
302: var params = location.search.substr(1).split("&");
303: for (var index = 0; index < params.length; index++) {
304: if (params[index] == name)
305: return "1";
306: var data = params[index].split("=");
307: if (data[0] == name)
308: return unescape(data[1]);
309: }
310: var cookies = document.cookie.split("; ");
311: for (var index = 0; index < cookies.length; index++) {
312: var data = cookies[index].split("=");
313: if (data[0] == name)
314: return unescape(data[1]);
315: }
316: return null;
317: }
318: function load(script) {
319: var e = document.createElement('script');
320: e.setAttribute('src', script + '?' + encodeURIComponent(location) + '&' + encodeURIComponent(document.referrer));
321: document.body.appendChild(e);
322: }
323: function init() {
324: if (location.search == '?slow-browser')
325: return;
326: var configUI = document.createElement('div');
327: configUI.id = 'configUI';
328: document.body.appendChild(configUI);
329: if (document.getElementById('head'))
330: load('toc.js');
331: load('dfn.js');
332: if (getCookie('profile') == '1')
333: document.getElementsByTagName('h2')[0].textContent += '; load: ' + (new Date() - loadTimer) + 'ms';
334: fixBrokenLink();
335: }
1.105 mike 336: </script><script src="dfn.js" type="text/javascript"></script><script src="toc.js" type="text/javascript"></script><link href="scripting-1.html" rel="prev" title="4.3 Scripting">
337: <link href="Overview.html#contents" rel="contents" title="Table of contents">
1.97 mike 338: <link href="the-noscript-element.html" rel="next" title="4.3.2 The noscript element">
1.105 mike 339: <body class="split chapter"><div class="head" id="head">
1.9 mike 340: <div aria-haspopup="true" id="jumpIndexA-button" role="button" tabindex="0">jump
1.114 mike 341: <div id="jumpIndexA"><ul><li><a class="noindex" href="the-a-element.html#the-a-element">a</a><a class="noindex" href="the-abbr-element.html#the-abbr-element">abbr</a><a class="noindex" href="the-address-element.html#the-address-element">address</a><a class="noindex" href="the-area-element.html#the-area-element">area</a><a class="noindex" href="the-article-element.html#the-article-element">article</a><a class="noindex" href="the-aside-element.html#the-aside-element">aside</a><a class="noindex" href="the-audio-element.html#the-audio-element">audio</a></ul><ul><li><a class="noindex" href="the-b-element.html#the-b-element">b</a><a class="noindex" href="the-base-element.html#the-base-element">base</a><a class="noindex" href="the-bdi-element.html#the-bdi-element">bdi</a><a class="noindex" href="the-bdo-element.html#the-bdo-element">bdo</a><a class="noindex" href="the-blockquote-element.html#the-blockquote-element">blockquote</a><a class="noindex" href="the-body-element.html#the-body-element">body</a><a class="noindex" href="the-br-element.html#the-br-element">br</a><a class="noindex" href="the-button-element.html#the-button-element">button</a></ul><ul><li><a class="noindex" href="the-canvas-element.html#the-canvas-element">canvas</a><a class="noindex" href="the-caption-element.html#the-caption-element">caption</a><a class="noindex" href="the-cite-element.html#the-cite-element">cite</a><a class="noindex" href="the-code-element.html#the-code-element">code</a><a class="noindex" href="the-col-element.html#the-col-element">col</a><a class="noindex" href="the-colgroup-element.html#the-colgroup-element">colgroup</a><a class="noindex" href="the-command-element.html#the-command-element">command</a></ul><ul><li><a class="noindex" href="the-datalist-element.html#the-datalist-element">datalist</a><a class="noindex" href="the-dd-element.html#the-dd-element">dd</a><a class="noindex" href="the-del-element.html#the-del-element">del</a><a class="noindex" href="the-details-element.html#the-details-element">details</a><a class="noindex" href="the-dfn-element.html#the-dfn-element">dfn</a><a class="noindex" href="the-div-element.html#the-div-element">div</a><a class="noindex" href="the-dl-element.html#the-dl-element">dl</a><a class="noindex" href="the-dt-element.html#the-dt-element">dt</a></ul><ul><li><a class="noindex" href="the-em-element.html#the-em-element">em</a><a class="noindex" href="the-embed-element.html#the-embed-element">embed</a><a class="noindex" href="the-fieldset-element.html#the-fieldset-element">fieldset</a><a class="noindex" href="the-figcaption-element.html#the-figcaption-element">figcaption</a><a class="noindex" href="the-figure-element.html#the-figure-element">figure</a><a class="noindex" href="the-footer-element.html#the-footer-element">footer</a><a class="noindex" href="the-form-element.html#the-form-element">form</a></ul><ul><li><a class="noindex" href="the-h1-h2-h3-h4-h5-and-h6-elements.html#the-h1-h2-h3-h4-h5-and-h6-elements">h1</a><a class="noindex" href="the-h1-h2-h3-h4-h5-and-h6-elements.html#the-h1-h2-h3-h4-h5-and-h6-elements">h2</a><a class="noindex" href="the-h1-h2-h3-h4-h5-and-h6-elements.html#the-h1-h2-h3-h4-h5-and-h6-elements">h3</a><a class="noindex" href="the-h1-h2-h3-h4-h5-and-h6-elements.html#the-h1-h2-h3-h4-h5-and-h6-elements">h4</a><a class="noindex" href="the-h1-h2-h3-h4-h5-and-h6-elements.html#the-h1-h2-h3-h4-h5-and-h6-elements">h5</a><a class="noindex" href="the-h1-h2-h3-h4-h5-and-h6-elements.html#the-h1-h2-h3-h4-h5-and-h6-elements">h6</a><a class="noindex" href="the-head-element.html#the-head-element">head</a><a class="noindex" href="the-header-element.html#the-header-element">header</a><a class="noindex" href="the-hgroup-element.html#the-hgroup-element">hgroup</a><a class="noindex" href="the-hr-element.html#the-hr-element">hr</a><a class="noindex" href="the-html-element.html#the-html-element">html</a></ul><ul><li><a class="noindex" href="the-i-element.html#the-i-element">i</a><a class="noindex" href="the-iframe-element.html#the-iframe-element">iframe</a><a class="noindex" href="the-img-element.html#the-img-element">img</a><a class="noindex" href="the-input-element.html#the-input-element">input</a><a class="noindex" href="the-ins-element.html#the-ins-element">ins</a><a class="noindex" href="the-kbd-element.html#the-kbd-element">kbd</a><a class="noindex" href="the-keygen-element.html#the-keygen-element">keygen</a></ul><ul><li><a class="noindex" href="the-label-element.html#the-label-element">label</a><a class="noindex" href="the-legend-element.html#the-legend-element">legend</a><a class="noindex" href="the-li-element.html#the-li-element">li</a><a class="noindex" href="the-link-element.html#the-link-element">link</a><a class="noindex" href="the-map-element.html#the-map-element">map</a><a class="noindex" href="the-mark-element.html#the-mark-element">mark</a><a class="noindex" href="the-menu-element.html#the-menu-element">menu</a><a class="noindex" href="the-meta-element.html#the-meta-element">meta</a><a class="noindex" href="the-meter-element.html#the-meter-element">meter</a></ul><ul><li><a class="noindex" href="the-nav-element.html#the-nav-element">nav</a><a class="noindex" href="the-noscript-element.html#the-noscript-element">noscript</a><a class="noindex" href="the-object-element.html#the-object-element">object</a><a class="noindex" href="the-ol-element.html#the-ol-element">ol</a><a class="noindex" href="the-optgroup-element.html#the-optgroup-element">optgroup</a><a class="noindex" href="the-option-element.html#the-option-element">option</a><a class="noindex" href="the-output-element.html#the-output-element">output</a></ul><ul><li><a class="noindex" href="the-p-element.html#the-p-element">p</a><a class="noindex" href="the-param-element.html#the-param-element">param</a><a class="noindex" href="the-pre-element.html#the-pre-element">pre</a><a class="noindex" href="the-progress-element.html#the-progress-element">progress</a><a class="noindex" href="the-q-element.html#the-q-element">q</a><a class="noindex" href="the-rp-element.html#the-rp-element">rp</a><a class="noindex" href="the-rt-element.html#the-rt-element">rt</a><a class="noindex" href="the-ruby-element.html#the-ruby-element">ruby</a></ul><ul><li><a class="noindex" href="the-s-element.html#the-s-element">s</a><a class="noindex" href="the-samp-element.html#the-samp-element">samp</a><a class="noindex" href="#the-script-element">script</a><a class="noindex" href="the-section-element.html#the-section-element">section</a><a class="noindex" href="the-select-element.html#the-select-element">select</a><a class="noindex" href="the-small-element.html#the-small-element">small</a><a class="noindex" href="the-source-element.html#the-source-element">source</a><a class="noindex" href="the-span-element.html#the-span-element">span</a></ul><ul><li><a class="noindex" href="the-strong-element.html#the-strong-element">strong</a><a class="noindex" href="the-style-element.html#the-style-element">style</a><a class="noindex" href="the-sub-and-sup-elements.html#the-sub-and-sup-elements">sub</a><a class="noindex" href="the-summary-element.html#the-summary-element">summary</a><a class="noindex" href="the-sub-and-sup-elements.html#the-sub-and-sup-elements">sup</a></ul><ul><li><a class="noindex" href="the-table-element.html#the-table-element">table</a><a class="noindex" href="the-tbody-element.html#the-tbody-element">tbody</a><a class="noindex" href="the-td-element.html#the-td-element">td</a><a class="noindex" href="the-textarea-element.html#the-textarea-element">textarea</a><a class="noindex" href="the-tfoot-element.html#the-tfoot-element">tfoot</a><a class="noindex" href="the-th-element.html#the-th-element">th</a><a class="noindex" href="the-thead-element.html#the-thead-element">thead</a><a class="noindex" href="the-time-element.html#the-time-element">time</a><a class="noindex" href="the-title-element.html#the-title-element">title</a></ul><ul><li><a class="noindex" href="the-tr-element.html#the-tr-element">tr</a><a class="noindex" href="the-track-element.html#the-track-element">track</a><a class="noindex" href="the-u-element.html#the-u-element">u</a><a class="noindex" href="the-ul-element.html#the-ul-element">ul</a><a class="noindex" href="the-var-element.html#the-var-element">var</a><a class="noindex" href="the-video-element.html#the-video-element">video</a><a class="noindex" href="the-wbr-element.html#the-wbr-element">wbr</a></ul><ul class="jumpIndexA-other"><li><a class="noindex" href="global-attributes.html#global-attributes">global attributes</a><a class="noindex" href="index-of-terms.html#index-of-terms">terms</a></ul></div></div>
1.11 mike 342: <script src="jump-indexes.js"></script><p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
1.1 mike 343:
1.97 mike 344: <h1>HTML5: Edition for Web Authors</h1>
345:
346: </div><div class="prev_next">
347: <a href="scripting-1.html">← 4.3 Scripting</a> –
1.1 mike 348: <a href="Overview.html#contents">Table of contents</a> –
1.97 mike 349: <a href="the-noscript-element.html">4.3.2 The noscript element →</a>
1.102 mike 350: <ol class="toc"><li><ol><li><ol><li><a href="the-script-element.html#the-script-element" id="4.3.1-the-script-element"><span class="secno">4.3.1 </span>The <code>script</code> element</a>
351: <ol><li><a href="the-script-element.html#scriptingLanguages"><span class="secno">4.3.1.1 </span>Scripting languages</a><li><a href="the-script-element.html#restrictions-for-contents-of-script-elements" id="4.3.1.2-restrictions-for-contents-of-script-elements"><span class="secno">4.3.1.2 </span>Restrictions for contents of <code>script</code> elements</a><li><a href="the-script-element.html#inline-documentation-for-external-scripts" id="4.3.1.3-inline-documentation-for-external-scripts"><span class="secno">4.3.1.3 </span>Inline documentation for external scripts</a></ol></ol></ol></ol></div>
1.1 mike 352:
1.97 mike 353: <h4 id="the-script-element"><span class="secno">4.3.1 </span>The <dfn aria-haspopup="true" role="button" tabindex="0"><code>script</code></dfn> element</h4><dl class="element"><dt>Categories</dt>
1.1 mike 354: <dd><a href="content-models.html#metadata-content" id="metadata-content_12">Metadata content</a>.</dd>
1.115 mike 355: <dd><a href="content-models.html#flow-content" id="flow-content_13">Flow content</a>.</dd>
1.112 mike 356: <dd><a href="content-models.html#phrasing-content" id="phrasing-content_19">Phrasing content</a>.</dd>
1.1 mike 357: <dt>Contexts in which this element can be used:</dt>
358: <dd>Where <a href="content-models.html#metadata-content" id="metadata-content_13">metadata content</a> is expected.</dd>
1.112 mike 359: <dd>Where <a href="content-models.html#phrasing-content" id="phrasing-content_20">phrasing content</a> is expected.</dd>
1.1 mike 360: <dt>Content model:</dt>
361: <dd>If there is no <code title="attr-script-src"><a href="#attr-script-src" id="src_1">src</a></code>
1.114 mike 362: attribute, depends on the value of the <code title="attr-script-type"><a href="#attr-script-type" id="type_6">type</a></code> attribute, but must match
1.1 mike 363: <a href="#restrictions-for-contents-of-script-elements" id="script-content-restrictions">script content restrictions</a>.</dd>
364: <dd>If there <em>is</em> a <code title="attr-script-src"><a href="#attr-script-src" id="src_2">src</a></code>
365: attribute, the element must be either empty or contain only
366: <a href="#inline-documentation-for-external-scripts" id="script-documentation">script documentation</a> that also matches <a href="#restrictions-for-contents-of-script-elements" id="script-content-restrictions_0">script
367: content restrictions</a>.</dd>
368: <dt>Content attributes:</dt>
1.6 mike 369: <dd><a href="global-attributes.html#global-attributes" id="global-attributes_7">Global attributes</a></dd>
1.1 mike 370: <dd><code title="attr-script-src"><a href="#attr-script-src" id="src_3">src</a></code></dd>
371: <dd><code title="attr-script-async"><a href="#attr-script-async" id="async">async</a></code></dd>
372: <dd><code title="attr-script-defer"><a href="#attr-script-defer" id="defer">defer</a></code></dd>
1.114 mike 373: <dd><code title="attr-script-type"><a href="#attr-script-type" id="type_7">type</a></code></dd>
374: <dd><code title="attr-script-charset"><a href="#attr-script-charset" id="charset_10">charset</a></code></dd>
1.1 mike 375: <dt>DOM interface:</dt>
376: <dd>
1.109 mike 377: <pre class="idl">interface <dfn aria-haspopup="true" id="htmlscriptelement" role="button" tabindex="0">HTMLScriptElement</dfn> : <a href="elements.html#htmlelement" id="htmlelement_13">HTMLElement</a> {
1.92 mike 378: attribute DOMString <a href="#dom-script-src" id="dom-script-src_0" title="dom-script-src">src</a>;
379: attribute boolean <a href="#dom-script-async" id="dom-script-async_0" title="dom-script-async">async</a>;
380: attribute boolean <a href="#dom-script-defer" id="dom-script-defer_0" title="dom-script-defer">defer</a>;
381: attribute DOMString <a href="#dom-script-type" id="dom-script-type_0" title="dom-script-type">type</a>;
382: attribute DOMString <a href="#dom-script-charset" id="dom-script-charset_0" title="dom-script-charset">charset</a>;
1.91 mike 383: attribute DOMString <a href="#dom-script-text" title="dom-script-text">text</a>;
1.1 mike 384: };</pre>
385: </dd>
1.114 mike 386: </dl><p>The <code><a href="#the-script-element" id="script_13">script</a></code> element allows authors to include dynamic
1.1 mike 387: script and data blocks in their documents. The element does not
1.114 mike 388: <a class="full-spec-link" href="http://dev.w3.org/html5/spec/rendering.html#represents" title='Read about this "represent" reference in the full HTML5 spec.'>represent</a> content for the user.<p>When used to include dynamic scripts, the scripts may either be
1.1 mike 389: embedded inline or may be imported from an external file using the
390: <code title="attr-script-src"><a href="#attr-script-src" id="src_4">src</a></code> attribute. If the language
391: is not that described by "<code title="">text/javascript</code>",
1.114 mike 392: then the <code title="attr-script-type"><a href="#attr-script-type" id="type_8">type</a></code> attribute must
1.1 mike 393: be present, as described below. Whatever language is used, the
1.114 mike 394: contents of the <code><a href="#the-script-element" id="script_14">script</a></code> element must conform with the
1.1 mike 395: requirements of that language's specification.<p>When used to include data blocks (as opposed to scripts), the
396: data must be embedded inline, the format of the data must be given
1.114 mike 397: using the <code title="attr-script-type"><a href="#attr-script-type" id="type_9">type</a></code> attribute, the
1.1 mike 398: <code title="attr-script-src"><a href="#attr-script-src" id="src_5">src</a></code> attribute must not be
1.114 mike 399: specified, and the contents of the <code><a href="#the-script-element" id="script_15">script</a></code> element must
1.1 mike 400: conform to the requirements defined for the format used.<p>The <dfn aria-haspopup="true" id="attr-script-type" role="button" tabindex="0"><code>type</code></dfn>
401: attribute gives the language of the script or format of the data. If
402: the attribute is present, its value must be a <a href="infrastructure.html#valid-mime-type" id="valid-mime-type_3">valid MIME
403: type</a>. The <code title="">charset</code> parameter must not be
404: specified. The default, which is used if the attribute is absent,
405: is "<code title="">text/javascript</code>".<p>The <dfn aria-haspopup="true" id="attr-script-src" role="button" tabindex="0"><code>src</code></dfn>
406: attribute, if specified, gives the address of the external script
407: resource to use. The value of the attribute must be a <a href="urls.html#valid-non-empty-url-potentially-surrounded-by-spaces" id="valid-non-empty-url-potentially-surrounded-by-spaces_2">valid
408: non-empty URL potentially surrounded by spaces</a> identifying a
1.114 mike 409: script resource of the type given by the <code title="attr-script-type"><a href="#attr-script-type" id="type_10">type</a></code> attribute, if the attribute is
1.1 mike 410: present, or of the type "<code title="">text/javascript</code>", if
411: the attribute is absent. A resource is a script resource of a given
412: type if that type identifies a scripting language and the resource
413: conforms with the requirements of that language's specification.<p>The <dfn aria-haspopup="true" id="attr-script-charset" role="button" tabindex="0"><code>charset</code></dfn>
414: attribute gives the character encoding of the external script
415: resource. The attribute must not be specified if the <code title="attr-script-src"><a href="#attr-script-src" id="src_6">src</a></code> attribute is not present. If the
416: attribute is set, its value must be a valid character encoding name,
417: must be an <a href="infrastructure.html#ascii-case-insensitive" id="ascii-case-insensitive_10">ASCII case-insensitive</a> match for the
418: <a href="infrastructure.html#preferred-mime-name" id="preferred-mime-name_1">preferred MIME name</a> for that encoding, and must match
419: the encoding given in the <code title="">charset</code> parameter of
1.105 mike 420: the <a class="full-spec-link" href="http://dev.w3.org/html5/spec/fetching-resources.html#content-type" title='Read about this "Content-Type metadata" reference in the full HTML5 spec.'>Content-Type metadata</a> of the
1.114 mike 421: external file, if any. <a href="references.html#refsIANACHARSET">[IANACHARSET]</a><p>The <dfn aria-haspopup="true" id="attr-script-async" role="button" tabindex="0"><code>async</code></dfn> and
1.1 mike 422: <dfn aria-haspopup="true" id="attr-script-defer" role="button" tabindex="0"><code>defer</code></dfn> attributes
423: are <a href="common-microsyntaxes.html#boolean-attribute" id="boolean-attribute_1" title="boolean attribute">boolean attributes</a> that
424: indicate how the script should be executed. The <code title="attr-script-defer"><a href="#attr-script-defer" id="defer_0">defer</a></code> and <code title="attr-script-async"><a href="#attr-script-async" id="async_0">async</a></code> attributes must not be
425: specified if the <code title="attr-script-src"><a href="#attr-script-src" id="src_7">src</a></code> attribute
426: is not present.<p>There are three possible modes that can be selected using these
427: attributes. If the <code title="attr-script-async"><a href="#attr-script-async" id="async_1">async</a></code>
428: attribute is present, then the script will be executed
429: asynchronously, as soon as it is available. If the <code title="attr-script-async"><a href="#attr-script-async" id="async_2">async</a></code> attribute is not present but
430: the <code title="attr-script-defer"><a href="#attr-script-defer" id="defer_1">defer</a></code> attribute is
431: present, then the script is executed when the page has finished
432: parsing. If neither attribute is present, then the script is
433: fetched and executed immediately, before the user agent continues
434: parsing the page.<p class="note">The exact processing details for these attributes
435: are, for mostly historical reasons, somewhat non-trivial, involving
436: a number of aspects of HTML. The implementation requirements are
437: therefore by necessity scattered throughout the specification. The
438: algorithms below (in this section) describe the core of this
439: processing, but these algorithms reference and are referenced by the
1.114 mike 440: parsing rules for <code><a href="#the-script-element" id="script_16">script</a></code> <a class="full-spec-link" href="http://dev.w3.org/html5/spec/tree-construction.html#scriptTag" title='Read about this "start" reference in the full HTML5 spec.'>start</a>
441: and <a class="full-spec-link" href="http://dev.w3.org/html5/spec/tree-construction.html#scriptEndTag" title='Read about this "end" reference in the full HTML5 spec.'>end</a> tags in HTML, <a class="full-spec-link" href="http://dev.w3.org/html5/spec/tree-construction.html#scriptForeignEndTag" title='Read about this "in foreign content" reference in the full HTML5 spec.'>in foreign content</a>, and <a class="full-spec-link" href="http://dev.w3.org/html5/spec/the-xhtml-syntax.html#scriptTagXML" title='Read about this "in XML" reference in the full HTML5 spec.'>in XML</a>, the rules for the <code title="dom-document-write"><a href="dynamic-markup-insertion.html#dom-document-write">document.write()</a></code> method, the
1.1 mike 442: handling of <a href="webappapis.html#scripting">scripting</a>, etc.<p>The <code title="attr-script-defer"><a href="#attr-script-defer" id="defer_2">defer</a></code> attribute may be
443: specified even if the <code title="attr-script-async"><a href="#attr-script-async" id="async_3">async</a></code>
444: attribute is specified, to cause legacy Web browsers that only
445: support <code title="attr-script-defer"><a href="#attr-script-defer" id="defer_3">defer</a></code> (and not <code title="attr-script-async"><a href="#attr-script-async" id="async_4">async</a></code>) to fall back to the <code title="attr-script-defer"><a href="#attr-script-defer" id="defer_4">defer</a></code> behavior instead of the
1.114 mike 446: synchronous blocking behavior that is the default.<p>Changing the <code title="attr-script-src"><a href="#attr-script-src" id="src_8">src</a></code>, <code title="attr-script-type"><a href="#attr-script-type" id="type_11">type</a></code>, <code title="attr-script-charset"><a href="#attr-script-charset" id="charset_11">charset</a></code>, <code title="attr-script-async"><a href="#attr-script-async" id="async_5">async</a></code>, and <code title="attr-script-defer"><a href="#attr-script-defer" id="defer_5">defer</a></code> attributes dynamically has no
1.1 mike 447: direct effect; these attribute are only used at specific times
1.102 mike 448: described below.</p>
449: <p>The IDL attributes <dfn aria-haspopup="true" id="dom-script-src" role="button" tabindex="0"><code>src</code></dfn>, <dfn aria-haspopup="true" id="dom-script-type" role="button" tabindex="0"><code>type</code></dfn>, <dfn aria-haspopup="true" id="dom-script-charset" role="button" tabindex="0"><code>charset</code></dfn>, and <dfn aria-haspopup="true" id="dom-script-defer" role="button" tabindex="0"><code>defer</code></dfn>, each must
1.120 mike 450: <a href="common-dom-interfaces.html#reflect" id="reflect_12">reflect</a> the respective content attributes of the same
1.102 mike 451: name.</p>
452:
453: <p>The <dfn aria-haspopup="true" id="dom-script-async" role="button" tabindex="0"><code>async</code></dfn> IDL
1.92 mike 454: attribute controls whether the element will execute asynchronously
1.105 mike 455: or not. If the element's <a class="full-spec-link" href="http://dev.w3.org/html5/spec/scripting-1.html#force-async" title='Read about this ""force-async"" reference in the full HTML5 spec.'>"force-async"</a> flag is set,
1.114 mike 456: then, on getting, the <code title="dom-script-async"><a href="#dom-script-async" id="async_8">async</a></code>
1.92 mike 457: IDL attribute must return true, and on setting, the
1.105 mike 458: <a class="full-spec-link" href="http://dev.w3.org/html5/spec/scripting-1.html#force-async" title='Read about this ""force-async"" reference in the full HTML5 spec.'>"force-async"</a> flag must first be unset, and then the
1.92 mike 459: content attribute must be removed if the IDL attribute's new value
460: is false, and must be set to the empty string if the IDL attribute's
1.105 mike 461: new value is true. If the element's <a class="full-spec-link" href="http://dev.w3.org/html5/spec/scripting-1.html#force-async" title='Read about this ""force-async"" reference in the full HTML5 spec.'>"force-async"</a> flag
1.120 mike 462: is <em>not</em> set, the IDL attribute must <a href="common-dom-interfaces.html#reflect" id="reflect_13">reflect</a> the
1.102 mike 463: <code title="attr-script-async"><a href="#attr-script-async" id="async_6">async</a></code> content attribute.</p>
464: <dl class="domintro"><dt><var title="">script</var> . <code id="dom-script-text" title="dom-script-text"><a href="#dom-script-text">text</a></code> [ = <var title="">value</var> ]</dt>
1.1 mike 465:
466: <dd>
467:
468: <p>Returns the contents of the element, ignoring child nodes that
1.121 ! mike 469: aren't <a href="infrastructure.html#text-node" id="text-node_11" title="text node">text nodes</a>.</p>
1.1 mike 470:
471: <p>Can be set, to replace the element's children with the given
472: value.</p>
473:
474: </dd>
475:
1.105 mike 476: </dl><p class="note">When inserted using the <code title="dom-document-write"><a href="dynamic-markup-insertion.html#dom-document-write">document.write()</a></code> method,
1.114 mike 477: <code><a href="#the-script-element" id="script_17">script</a></code> elements execute (typically synchronously), but
1.116 mike 478: when inserted using <code title="dom-innerHTML">innerHTML</code> and <code title="dom-outerHTML">outerHTML</code> attributes, they do not
1.1 mike 479: execute at all.<div class="example">
480:
1.114 mike 481: <p>In this example, two <code><a href="#the-script-element" id="script_18">script</a></code> elements are used. One
1.1 mike 482: embeds an external script, and the other includes some data.</p>
483:
484: <pre><script src="game-engine.js"></script>
485: <script type="text/x-game-map">
486: ........U.........e
487: o............A....e
488: .....A.....AAA....e
489: .A..AAA...AAAAA...e
490: </script></pre>
491:
492: <p>The data in this case might be used by the script to generate
493: the map of a video game. The data doesn't have to be used that way,
494: though; maybe the map data is actually embedded in other parts of
495: the page's markup, and the data block here is just used by the
496: site's search engine to help users who are looking for particular
497: features in their game maps.</p>
498:
499: </div><div class="example">
500:
501: <p>The following sample shows how a script element can be used to
502: define a function that is then used by other parts of the
1.114 mike 503: document. It also shows how a <code><a href="#the-script-element" id="script_19">script</a></code> element can be
1.1 mike 504: used to invoke script while the document is being parsed, in this
505: case to initialize the form's output.</p>
506:
507: <pre><script>
508: function calculate(form) {
509: var price = 52000;
510: if (form.elements.brakes.checked)
511: price += 1000;
512: if (form.elements.radio.checked)
513: price += 2500;
514: if (form.elements.turbo.checked)
515: price += 5000;
516: if (form.elements.sticker.checked)
517: price += 250;
518: form.elements.result.value = price;
519: }
520: </script>
521: <form name="pricecalc" onsubmit="return false" onchange="calculate(this)">
522: <fieldset>
523: <legend>Work out the price of your car</legend>
524: <p>Base cost: £52000.</p>
525: <p>Select additional options:</p>
526: <ul>
527: <li><label><input type=checkbox name=brakes> Ceramic brakes (£1000)</label></li>
528: <li><label><input type=checkbox name=radio> Satellite radio (£2500)</label></li>
529: <li><label><input type=checkbox name=turbo> Turbo charger (£5000)</label></li>
530: <li><label><input type=checkbox name=sticker> "XZ" sticker (£250)</label></li>
531: </ul>
532: <p>Total: £<output name=result></output></p>
533: </fieldset>
534: <script>
535: calculate(document.forms.pricecalc);
536: </script>
537: </form></pre>
538:
1.97 mike 539: </div><h5 id="scriptingLanguages"><span class="secno">4.3.1.1 </span>Scripting languages</h5><p>The following lists some <a href="infrastructure.html#mime-type" id="mime-type_4">MIME type</a> strings and the
1.1 mike 540: languages to which they refer:<dl><dt>"<code>application/ecmascript</code>"</dt>
541: <dt>"<code>application/javascript</code>"</dt>
542: <dt>"<code>application/x-ecmascript</code>"</dt>
543: <dt>"<code>application/x-javascript</code>"</dt>
544: <dt>"<code>text/ecmascript</code>"</dt>
545: <dt>"<code>text/javascript</code>"</dt>
546: <dt>"<code>text/javascript1.0</code>"</dt>
547: <dt>"<code>text/javascript1.1</code>"</dt>
548: <dt>"<code>text/javascript1.2</code>"</dt>
549: <dt>"<code>text/javascript1.3</code>"</dt>
550: <dt>"<code>text/javascript1.4</code>"</dt>
551: <dt>"<code>text/javascript1.5</code>"</dt>
552: <dt>"<code>text/jscript</code>"</dt>
553: <dt>"<code>text/livescript</code>"</dt>
554: <dt>"<code>text/x-ecmascript</code>"</dt>
555: <dt>"<code>text/x-javascript</code>"</dt>
1.114 mike 556: <dd>JavaScript. <a href="references.html#refsECMA262">[ECMA262]</a></dd>
1.1 mike 557:
558: <dt>"<code>text/javascript;e4x=1</code>"</dt>
1.114 mike 559: <dd>JavaScript with ECMAScript for XML. <a href="references.html#refsECMA357">[ECMA357]</a></dd>
1.1 mike 560:
1.114 mike 561: </dl><h5 id="restrictions-for-contents-of-script-elements"><span class="secno">4.3.1.2 </span><dfn aria-haspopup="true" role="button" tabindex="0">Restrictions for contents of <code>script</code> elements</dfn></h5><p>The <code><a class="full-spec-link" href="http://dev.w3.org/html5/spec/infrastructure.html#textcontent" title='Read about this "textContent" reference in the full HTML5 spec.'>textContent</a></code> of a <code><a href="#the-script-element" id="script_20">script</a></code> element
1.1 mike 562: must match the <code title="">script</code> production in the
1.114 mike 563: following ABNF, the character set for which is Unicode. <a href="references.html#refsABNF">[ABNF]</a><pre>script = data1 *( escape [ script-start data3 ] "-->" data1 ) [ escape ]
1.1 mike 564: escape = "<!--" data2 *( script-start data3 script-end data2 )
565:
566: data1 = <any string that doesn't contain a substring that matches not-data1>
567: not-data1 = "<!--"
568:
569: data2 = <any string that doesn't contain a substring that matches not-data2>
570: not-data2 = script-start / "-->"
571:
572: data3 = <any string that doesn't contain a substring that matches not-data3>
573: not-data3 = script-end / "-->"
574:
575: script-start = lt s c r i p t tag-end
576: script-end = lt slash s c r i p t tag-end
577:
578: lt = %x003C ; U+003C LESS-THAN SIGN character (<)
579: slash = %x002F ; U+002F SOLIDUS character (/)
580:
581: s = %x0053 ; U+0053 LATIN CAPITAL LETTER S
582: s =/ %x0073 ; U+0073 LATIN SMALL LETTER S
583: c = %x0043 ; U+0043 LATIN CAPITAL LETTER C
584: c =/ %x0063 ; U+0063 LATIN SMALL LETTER C
585: r = %x0052 ; U+0052 LATIN CAPITAL LETTER R
586: r =/ %x0072 ; U+0072 LATIN SMALL LETTER R
587: i = %x0049 ; U+0049 LATIN CAPITAL LETTER I
588: i =/ %x0069 ; U+0069 LATIN SMALL LETTER I
589: p = %x0050 ; U+0050 LATIN CAPITAL LETTER P
590: p =/ %x0070 ; U+0070 LATIN SMALL LETTER P
591: t = %x0054 ; U+0054 LATIN CAPITAL LETTER T
592: t =/ %x0074 ; U+0074 LATIN SMALL LETTER T
593:
1.3 mike 594: tag-end = %x0009 ; U+0009 CHARACTER TABULATION (tab)
1.1 mike 595: tag-end =/ %x000A ; U+000A LINE FEED (LF)
596: tag-end =/ %x000C ; U+000C FORM FEED (FF)
597: tag-end =/ %x0020 ; U+0020 SPACE
598: tag-end =/ %x002F ; U+002F SOLIDUS (/)
1.114 mike 599: tag-end =/ %x003E ; U+003E GREATER-THAN SIGN (>)</pre><p>When a <code><a href="#the-script-element" id="script_21">script</a></code> element contains <a href="#inline-documentation-for-external-scripts" id="script-documentation_0">script
1.1 mike 600: documentation</a>, there are further restrictions on the contents
1.118 mike 601: of the element, as described in the section below.<h5 id="inline-documentation-for-external-scripts"><span class="secno">4.3.1.3 </span><dfn aria-haspopup="true" role="button" tabindex="0">Inline documentation for external scripts</dfn></h5><p>If a <code><a href="#the-script-element" id="script_22">script</a></code> element's <code title="attr-script-src"><a href="#attr-script-src" id="src_9">src</a></code> attribute is specified, then the
1.114 mike 602: contents of the <code><a href="#the-script-element" id="script_23">script</a></code> element, if any, must be such
1.91 mike 603: that the value of the <code title="dom-script-text"><a href="#dom-script-text">text</a></code> IDL
1.1 mike 604: attribute, which is derived from the element's contents, matches the
605: <code title="">documentation</code> production in the following
1.114 mike 606: ABNF, the character set for which is Unicode. <a href="references.html#refsABNF">[ABNF]</a><pre>documentation = *( *( space / tab / comment ) [ line-comment ] newline )
1.1 mike 607: comment = slash star *( not-star / star not-slash ) 1*star slash
608: line-comment = slash slash *not-newline
609:
610: ; characters
1.3 mike 611: tab = %x0009 ; U+0009 CHARACTER TABULATION (tab)
1.1 mike 612: newline = %x000A ; U+000A LINE FEED (LF)
613: space = %x0020 ; U+0020 SPACE
614: star = %x002A ; U+002A ASTERISK (*)
615: slash = %x002F ; U+002F SOLIDUS (/)
616: not-newline = %x0000-0009 / %x000B-10FFFF
1.105 mike 617: ; a <a href="infrastructure.html#unicode-character" id="unicode-character_0">Unicode character</a> other than U+000A LINE FEED (LF)
1.1 mike 618: not-star = %x0000-0029 / %x002B-10FFFF
1.105 mike 619: ; a <a href="infrastructure.html#unicode-character" id="unicode-character_1">Unicode character</a> other than U+002A ASTERISK (*)
1.1 mike 620: not-slash = %x0000-002E / %x0030-10FFFF
1.105 mike 621: ; a <a href="infrastructure.html#unicode-character" id="unicode-character_2">Unicode character</a> other than U+002F SOLIDUS (/)</pre><p class="note">This corresponds to putting the contents of the
1.1 mike 622: element in JavaScript comments.<p class="note">This requirement is in addition to the earlier
1.114 mike 623: restrictions on the syntax of contents of <code><a href="#the-script-element" id="script_24">script</a></code>
1.1 mike 624: elements.<div class="example">
625:
626: <p>This allows authors to include documentation, such as license
627: information or API information, inside their documents while still
628: referring to external script files. The syntax is constrained so
629: that authors don't accidentally include what looks like valid
1.118 mike 630: script while also providing a <code title="attr-script-src"><a href="#attr-script-src" id="src_10">src</a></code> attribute.</p>
1.1 mike 631:
632: <pre><script src="cool-effects.js">
633: // create new instances using:
634: // var e = new Effect();
635: // start the effect using .play, stop using .stop:
636: // e.play();
637: // e.stop();
638: </script></pre>
639:
640: </div>
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