Annotation of html5/spec-author-view/editing-apis.html, revision 1.1

1.1     ! mike        1: <!doctype html>
        !             2: <html lang="en-US-x-Hixie"><meta content="text/html; charset=utf-8" http-equiv="Content-Type"><title>7.8 Editing APIs &mdash; HTML5: Edition for Web Authors</title><meta content="width=device-width;" name="viewport"><link href="whatwg.css" rel="stylesheet"><style type="text/css">
        !             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:    dt dfn { font-style: italic; }
        !            22:    pre, code { font-size: inherit; font-family: monospace; font-variant: normal; }
        !            23:    pre strong { color: black; font: inherit; font-weight: bold; background: yellow; }
        !            24:    pre em { font-weight: bolder; font-style: normal; }
        !            25:    @media screen { code { color: orangered; } code :link, code :visited { color: inherit; } }
        !            26:    var sub { vertical-align: bottom; font-size: smaller; position: relative; top: 0.1em; }
        !            27:    table { border-collapse: collapse; border-style: hidden hidden none hidden; }
        !            28:    table thead, table tbody { border-bottom: solid; }
        !            29:    table tbody th:first-child { border-left: solid; }
        !            30:    table tbody th { text-align: left; }
        !            31:    table td, table th { border-left: solid; border-right: solid; border-bottom: solid thin; vertical-align: top; padding: 0.2em; }
        !            32:    blockquote { margin: 0 0 0 2em; border: 0; padding: 0; font-style: italic; }
        !            33: 
        !            34:    .bad, .bad *:not(.XXX) { color: gray; border-color: gray; background: transparent; }
        !            35:    .matrix, .matrix td { border: none; text-align: right; }
        !            36:    .matrix { margin-left: 2em; }
        !            37:    .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
        !            38:    .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
        !            39:    .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
        !            40: 
        !            41:    .toc dfn, h1 dfn, h2 dfn, h3 dfn, h4 dfn, h5 dfn, h6 dfn { font: inherit; }
        !            42:    img.extra { float: right; }
        !            43:    pre.idl { border: solid thin; background: #EEEEEE; color: black; padding: 0.5em 1em; }
        !            44:    pre.idl :link, pre.idl :visited { color: inherit; background: transparent; }
        !            45:    pre.css { border: solid thin; background: #FFFFEE; color: black; padding: 0.5em 1em; }
        !            46:    pre.css:first-line { color: #AAAA50; }
        !            47:    dl.domintro { color: green; margin: 2em 0 2em 2em; padding: 0.5em 1em; border: none; background: #DDFFDD; }
        !            48:    hr + dl.domintro, div.impl + dl.domintro { margin-top: 2.5em; margin-bottom: 1.5em; }
        !            49:    dl.domintro dt, dl.domintro dt * { color: black; text-decoration: none; }
        !            50:    dl.domintro dd { margin: 0.5em 0 1em 2em; padding: 0; }
        !            51:    dl.domintro dd p { margin: 0.5em 0; }
        !            52:    dl.switch { padding-left: 2em; }
        !            53:    dl.switch > dt { text-indent: -1.5em; }
        !            54:    dl.switch > dt:before { content: '\21AA'; padding: 0 0.5em 0 0; display: inline-block; width: 1em; text-align: right; line-height: 0.5em; }
        !            55:    dl.triple { padding: 0 0 0 1em; }
        !            56:    dl.triple dt, dl.triple dd { margin: 0; display: inline }
        !            57:    dl.triple dt:after { content: ':'; }
        !            58:    dl.triple dd:after { content: '\A'; white-space: pre; }
        !            59:    .diff-old { text-decoration: line-through; color: silver; background: transparent; }
        !            60:    .diff-chg, .diff-new { text-decoration: underline; color: green; background: transparent; }
        !            61:    a .diff-new { border-bottom: 1px blue solid; }
        !            62: 
        !            63:    h2 { page-break-before: always; }
        !            64:    h1, h2, h3, h4, h5, h6 { page-break-after: avoid; }
        !            65:    h1 + h2, hr + h2.no-toc { page-break-before: auto; }
        !            66: 
        !            67:    p  > span:not([title=""]):not([class="XXX"]):not([class="impl"]):not([class="note"]),
        !            68:    li > span:not([title=""]):not([class="XXX"]):not([class="impl"]):not([class="note"]), { border-bottom: solid #9999CC; }
        !            69: 
        !            70:    div.head { margin: 0 0 1em; padding: 1em 0 0 0; }
        !            71:    div.head p { margin: 0; }
        !            72:    div.head h1 { margin: 0; }
        !            73:    div.head .logo { float: right; margin: 0 1em; }
        !            74:    div.head .logo img { border: none } /* remove border from top image */
        !            75:    div.head dl { margin: 1em 0; }
        !            76:    div.head p.copyright, div.head p.alt { font-size: x-small; font-style: oblique; margin: 0; }
        !            77: 
        !            78:    body > .toc > li { margin-top: 1em; margin-bottom: 1em; }
        !            79:    body > .toc.brief > li { margin-top: 0.35em; margin-bottom: 0.35em; }
        !            80:    body > .toc > li > * { margin-bottom: 0.5em; }
        !            81:    body > .toc > li > * > li > * { margin-bottom: 0.25em; }
        !            82:    .toc, .toc li { list-style: none; }
        !            83: 
        !            84:    .brief { margin-top: 1em; margin-bottom: 1em; line-height: 1.1; }
        !            85:    .brief li { margin: 0; padding: 0; }
        !            86:    .brief li p { margin: 0; padding: 0; }
        !            87: 
        !            88:    .category-list { margin-top: -0.75em; margin-bottom: 1em; line-height: 1.5; }
        !            89:    .category-list::before { content: '\21D2\A0'; font-size: 1.2em; font-weight: 900; }
        !            90:    .category-list li { display: inline; }
        !            91:    .category-list li:not(:last-child)::after { content: ', '; }
        !            92:    .category-list li > span, .category-list li > a { text-transform: lowercase; }
        !            93:    .category-list li * { text-transform: none; } /* don't affect <code> nested in <a> */
        !            94: 
        !            95:    .XXX { color: #E50000; background: white; border: solid red; padding: 0.5em; margin: 1em 0; }
        !            96:    .XXX > :first-child { margin-top: 0; }
        !            97:    p .XXX { line-height: 3em; }
        !            98:    .annotation { border: solid thin black; background: #0C479D; color: white; position: relative; margin: 8px 0 20px 0; }
        !            99:    .annotation:before { position: absolute; left: 0; top: 0; width: 100%; height: 100%; margin: 6px -6px -6px 6px; background: #333333; z-index: -1; content: ''; }
        !           100:    .annotation :link, .annotation :visited { color: inherit; }
        !           101:    .annotation :link:hover, .annotation :visited:hover { background: transparent; }
        !           102:    .annotation span { border: none ! important; }
        !           103:    .note { color: green; background: transparent; font-family: sans-serif; }
        !           104:    .warning { color: red; background: transparent; }
        !           105:    .note, .warning { font-weight: bolder; font-style: italic; }
        !           106:    p.note, div.note { padding: 0.5em 2em; }
        !           107:    span.note { padding: 0 2em; }
        !           108:    .note p:first-child, .warning p:first-child { margin-top: 0; }
        !           109:    .note p:last-child, .warning p:last-child { margin-bottom: 0; }
        !           110:    .warning:before { font-style: normal; }
        !           111:    p.note:before { content: 'Note: '; }
        !           112:    p.warning:before { content: '\26A0 Warning! '; }
        !           113: 
        !           114:    .bookkeeping:before { display: block; content: 'Bookkeeping details'; font-weight: bolder; font-style: italic; }
        !           115:    .bookkeeping { font-size: 0.8em; margin: 2em 0; }
        !           116:    .bookkeeping p { margin: 0.5em 2em; display: list-item; list-style: square; }
        !           117:    .bookkeeping dt { margin: 0.5em 2em 0; }
        !           118:    .bookkeeping dd { margin: 0 3em 0.5em; }
        !           119: 
        !           120:    h4 { position: relative; z-index: 3; }
        !           121:    h4 + .element, h4 + div + .element { margin-top: -2.5em; padding-top: 2em; }
        !           122:    .element {
        !           123:      background: #EEEEFF;
        !           124:      color: black;
        !           125:      margin: 0 0 1em 0.15em;
        !           126:      padding: 0 1em 0.25em 0.75em;
        !           127:      border-left: solid #9999FF 0.25em;
        !           128:      position: relative;
        !           129:      z-index: 1;
        !           130:    }
        !           131:    .element:before {
        !           132:      position: absolute;
        !           133:      z-index: 2;
        !           134:      top: 0;
        !           135:      left: -1.15em;
        !           136:      height: 2em;
        !           137:      width: 0.9em;
        !           138:      background: #EEEEFF;
        !           139:      content: ' ';
        !           140:      border-style: none none solid solid;
        !           141:      border-color: #9999FF;
        !           142:      border-width: 0.25em;
        !           143:    }
        !           144: 
        !           145:    .example { display: block; color: #222222; background: #FCFCFC; border-left: double; margin-left: 2em; padding-left: 1em; }
        !           146:    td > .example:only-child { margin: 0 0 0 0.1em; }
        !           147: 
        !           148:    ul.domTree, ul.domTree ul { padding: 0 0 0 1em; margin: 0; }
        !           149:    ul.domTree li { padding: 0; margin: 0; list-style: none; position: relative; }
        !           150:    ul.domTree li li { list-style: none; }
        !           151:    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; }
        !           152:    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; }
        !           153:    ul.domTree span { font-style: italic; font-family: serif; }
        !           154:    ul.domTree .t1 code { color: purple; font-weight: bold; }
        !           155:    ul.domTree .t2 { font-style: normal; font-family: monospace; }
        !           156:    ul.domTree .t2 .name { color: black; font-weight: bold; }
        !           157:    ul.domTree .t2 .value { color: blue; font-weight: normal; }
        !           158:    ul.domTree .t3 code, .domTree .t4 code, .domTree .t5 code { color: gray; }
        !           159:    ul.domTree .t7 code, .domTree .t8 code { color: green; }
        !           160:    ul.domTree .t10 code { color: teal; }
        !           161: 
        !           162:    body.dfnEnabled dfn { cursor: pointer; }
        !           163:    .dfnPanel {
        !           164:      display: inline;
        !           165:      position: absolute;
        !           166:      z-index: 10;
        !           167:      height: auto;
        !           168:      width: auto;
        !           169:      padding: 0.5em 0.75em;
        !           170:      font: small sans-serif, Droid Sans Fallback;
        !           171:      background: #DDDDDD;
        !           172:      color: black;
        !           173:      border: outset 0.2em;
        !           174:    }
        !           175:    .dfnPanel * { margin: 0; padding: 0; font: inherit; text-indent: 0; }
        !           176:    .dfnPanel :link, .dfnPanel :visited { color: black; }
        !           177:    .dfnPanel p { font-weight: bolder; }
        !           178:    .dfnPanel * + p { margin-top: 0.25em; }
        !           179:    .dfnPanel li { list-style-position: inside; }
        !           180: 
        !           181:    #configUI { position: absolute; z-index: 20; top: 10em; right: 1em; width: 11em; font-size: small; }
        !           182:    #configUI p { margin: 0.5em 0; padding: 0.3em; background: #EEEEEE; color: black; border: inset thin; }
        !           183:    #configUI p label { display: block; }
        !           184:    #configUI #updateUI, #configUI .loginUI { text-align: center; }
        !           185:    #configUI input[type=button] { display: block; margin: auto; }
        !           186: 
        !           187:    fieldset { margin: 1em; padding: 0.5em 1em; }
        !           188:    fieldset > legend + * { margin-top: 0; }
        !           189:    fieldset > :last-child { margin-bottom: 0; }
        !           190:    fieldset p { margin: 0.5em 0; }
        !           191: 
        !           192:   </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">
        !           193: 
        !           194:    .applies thead th > * { display: block; }
        !           195:    .applies thead code { display: block; }
        !           196:    .applies tbody th { whitespace: nowrap; }
        !           197:    .applies td { text-align: center; }
        !           198:    .applies .yes { background: yellow; }
        !           199: 
        !           200:    .matrix, .matrix td { border: hidden; text-align: right; }
        !           201:    .matrix { margin-left: 2em; }
        !           202: 
        !           203:    .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
        !           204:    .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
        !           205:    .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
        !           206: 
        !           207:    td.eg { border-width: thin; text-align: center; }
        !           208: 
        !           209:    #table-example-1 { border: solid thin; border-collapse: collapse; margin-left: 3em; }
        !           210:    #table-example-1 * { font-family: "Essays1743", serif; line-height: 1.01em; }
        !           211:    #table-example-1 caption { padding-bottom: 0.5em; }
        !           212:    #table-example-1 thead, #table-example-1 tbody { border: none; }
        !           213:    #table-example-1 th, #table-example-1 td { border: solid thin; }
        !           214:    #table-example-1 th { font-weight: normal; }
        !           215:    #table-example-1 td { border-style: none solid; vertical-align: top; }
        !           216:    #table-example-1 th { padding: 0.5em; vertical-align: middle; text-align: center; }
        !           217:    #table-example-1 tbody tr:first-child td { padding-top: 0.5em; }
        !           218:    #table-example-1 tbody tr:last-child td { padding-bottom: 1.5em; }
        !           219:    #table-example-1 tbody td:first-child { padding-left: 2.5em; padding-right: 0; width: 9em; }
        !           220:    #table-example-1 tbody td:first-child::after { content: leader(". "); }
        !           221:    #table-example-1 tbody td { padding-left: 2em; padding-right: 2em; }
        !           222:    #table-example-1 tbody td:first-child + td { width: 10em; }
        !           223:    #table-example-1 tbody td:first-child + td ~ td { width: 2.5em; }
        !           224:    #table-example-1 tbody td:first-child + td + td + td ~ td { width: 1.25em; }
        !           225: 
        !           226:    .apple-table-examples { border: none; border-collapse: separate; border-spacing: 1.5em 0em; width: 40em; margin-left: 3em; }
        !           227:    .apple-table-examples * { font-family: "Times", serif; }
        !           228:    .apple-table-examples td, .apple-table-examples th { border: none; white-space: nowrap; padding-top: 0; padding-bottom: 0; }
        !           229:    .apple-table-examples tbody th:first-child { border-left: none; width: 100%; }
        !           230:    .apple-table-examples thead th:first-child ~ th { font-size: smaller; font-weight: bolder; border-bottom: solid 2px; text-align: center; }
        !           231:    .apple-table-examples tbody th::after, .apple-table-examples tfoot th::after { content: leader(". ") }
        !           232:    .apple-table-examples tbody th, .apple-table-examples tfoot th { font: inherit; text-align: left; }
        !           233:    .apple-table-examples td { text-align: right; vertical-align: top; }
        !           234:    .apple-table-examples.e1 tbody tr:last-child td { border-bottom: solid 1px; }
        !           235:    .apple-table-examples.e1 tbody + tbody tr:last-child td { border-bottom: double 3px; }
        !           236:    .apple-table-examples.e2 th[scope=row] { padding-left: 1em; }
        !           237:    .apple-table-examples sup { line-height: 0; }
        !           238: 
        !           239:    .details-example img { vertical-align: top; }
        !           240: 
        !           241:    #base64-table {
        !           242:      white-space: nowrap;
        !           243:      font-size: 0.6em;
        !           244:      column-width: 6em;
        !           245:      column-count: 5;
        !           246:      column-gap: 1em;
        !           247:      -moz-column-width: 6em;
        !           248:      -moz-column-count: 5;
        !           249:      -moz-column-gap: 1em;
        !           250:      -webkit-column-width: 6em;
        !           251:      -webkit-column-count: 5;
        !           252:      -webkit-column-gap: 1em;
        !           253:    }
        !           254:    #base64-table thead { display: none; }
        !           255:    #base64-table * { border: none; }
        !           256:    #base64-table tbody td:first-child:after { content: ':'; }
        !           257:    #base64-table tbody td:last-child { text-align: right; }
        !           258: 
        !           259:    #named-character-references-table {
        !           260:      white-space: nowrap;
        !           261:      font-size: 0.6em;
        !           262:      column-width: 30em;
        !           263:      column-gap: 1em;
        !           264:      -moz-column-width: 30em;
        !           265:      -moz-column-gap: 1em;
        !           266:      -webkit-column-width: 30em;
        !           267:      -webkit-column-gap: 1em;
        !           268:    }
        !           269:    #named-character-references-table > table > tbody > tr > td:first-child + td,
        !           270:    #named-character-references-table > table > tbody > tr > td:last-child { text-align: center; }
        !           271:    #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; }
        !           272:    #named-character-references-table > table > tbody > tr#entity-CounterClockwiseContourIntegral > td:first-child { font-size: 0.5em; }
        !           273: 
        !           274:    .glyph.control { color: red; }
        !           275: 
        !           276:    @font-face {
        !           277:      font-family: 'Essays1743';
        !           278:      src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743.ttf');
        !           279:    }
        !           280:    @font-face {
        !           281:      font-family: 'Essays1743';
        !           282:      font-weight: bold;
        !           283:      src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-Bold.ttf');
        !           284:    }
        !           285:    @font-face {
        !           286:      font-family: 'Essays1743';
        !           287:      font-style: italic;
        !           288:      src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-Italic.ttf');
        !           289:    }
        !           290:    @font-face {
        !           291:      font-family: 'Essays1743';
        !           292:      font-style: italic;
        !           293:      font-weight: bold;
        !           294:      src: url('http://www.whatwg.org/specs/web-apps/current-work/fonts/Essays1743-BoldItalic.ttf');
        !           295:    }
        !           296: 
        !           297:   </style><script type="text/javascript">
        !           298:  function getCookie(name) {
        !           299:    var params = location.search.substr(1).split("&");
        !           300:    for (var index = 0; index < params.length; index++) {
        !           301:      if (params[index] == name)
        !           302:        return "1";
        !           303:      var data = params[index].split("=");
        !           304:      if (data[0] == name)
        !           305:        return unescape(data[1]);
        !           306:    }
        !           307:    var cookies = document.cookie.split("; ");
        !           308:    for (var index = 0; index < cookies.length; index++) {
        !           309:      var data = cookies[index].split("=");
        !           310:      if (data[0] == name)
        !           311:        return unescape(data[1]);
        !           312:    }
        !           313:    return null;
        !           314:  }
        !           315:  function load(script) {
        !           316:    var e = document.createElement('script');
        !           317:    e.setAttribute('src', script + '?' + encodeURIComponent(location) + '&' + encodeURIComponent(document.referrer));
        !           318:    document.body.appendChild(e);
        !           319:  }
        !           320:  function init() {
        !           321:    if (location.search == '?slow-browser')
        !           322:      return;
        !           323:    var configUI = document.createElement('div');
        !           324:    configUI.id = 'configUI';
        !           325:    document.body.appendChild(configUI);
        !           326:    if (document.getElementById('head'))
        !           327:      load('toc.js');
        !           328:    load('dfn.js');
        !           329:    if (getCookie('profile') == '1')
        !           330:      document.getElementsByTagName('h2')[0].textContent += '; load: ' + (new Date() - loadTimer) + 'ms';
        !           331:    fixBrokenLink();
        !           332:  }
        !           333: </script><script src="dfn.js" type="text/javascript"></script><script src="toc.js" type="text/javascript"></script><link href="dnd.html" rel="prev" title="7.7 Drag and drop">
        !           334:   <link href="Overview.html#contents" rel="contents" title="Table of contents">
        !           335:   <link href="syntax.html" rel="next" title="8 The HTML syntax">
        !           336:   <body class="split chapter"><div class="head" id="head">
        !           337: <div aria-haspopup="true" id="jumpIndexA-button" role="button" tabindex="0">jump
        !           338: <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" 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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.html#the-script-element">script</a><a class="noindex" href="the-section-element.html#the-section-element">section</a><a class="noindex" href="the-select-element.html#the-select-element">select</a><a class="noindex" href="the-small-element.html#the-small-element">small</a><a class="noindex" href="the-source-element.html#the-source-element">source</a><a class="noindex" 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>
        !           339: <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>
        !           340: 
        !           341:    <h1>HTML5: Edition for Web Authors</h1>
        !           342:    
        !           343:    </div><div class="prev_next">
        !           344:    <a href="dnd.html">&larr; 7.7 Drag and drop</a> &ndash;
        !           345:    <a href="Overview.html#contents">Table of contents</a> &ndash;
        !           346:    <a href="syntax.html">8 The HTML syntax &rarr;</a>
        !           347:   </div>
        !           348: 
        !           349:   <h3 id="editing-apis"><span class="secno">7.8 </span>Editing APIs</h3><dl class="domintro"><dt><var title="">document</var> . <code id="dom-document-execcommand" title="dom-document-execCommand"><a class="full-spec-link" href="http://dev.w3.org/html5/spec/dnd.html#execCommand" title='Read about this "execCommand" reference in the full HTML5 spec.'>execCommand</a></code>(<var title="">commandId</var> [, <var title="">showUI</var> [, <var title="">value</var> ] ] )</dt>
        !           350: 
        !           351:    <dd>
        !           352: 
        !           353:     <p>Runs the action specified by the first argument, as described
        !           354:     in the list below. The second and third arguments sometimes affect
        !           355:     the action. (If they don't they are ignored.)</p>
        !           356: 
        !           357:    </dd>
        !           358: 
        !           359:    <dt><var title="">document</var> . <code id="dom-document-querycommandenabled" title="dom-document-queryCommandEnabled"><a href="#dom-document-querycommandenabled">queryCommandEnabled</a></code>(<var title="">commandId</var>)</dt>
        !           360: 
        !           361:    <dd>
        !           362: 
        !           363:     <p>Returns whether the given command is enabled, as described in the list below.</p>
        !           364: 
        !           365:    </dd>
        !           366: 
        !           367:    <dt><var title="">document</var> . <code id="dom-document-querycommandindeterm" title="dom-document-queryCommandIndeterm"><a href="#dom-document-querycommandindeterm">queryCommandIndeterm</a></code>(<var title="">commandId</var>)</dt>
        !           368: 
        !           369:    <dd>
        !           370: 
        !           371:     <p>Returns whether the given command is indeterminate, as described in the list below.</p>
        !           372: 
        !           373:    </dd>
        !           374: 
        !           375:    <dt><var title="">document</var> . <code id="dom-document-querycommandstate" title="dom-document-queryCommandState"><a href="#dom-document-querycommandstate">queryCommandState</a></code>(<var title="">commandId</var>)</dt>
        !           376: 
        !           377:    <dd>
        !           378: 
        !           379:     <p>Returns the state of the command, as described in the list below.</p>
        !           380: 
        !           381:    </dd>
        !           382: 
        !           383:    <dt><var title="">document</var> . <code id="dom-document-querycommandsupported" title="dom-document-queryCommandSupported"><a href="#dom-document-querycommandsupported">queryCommandSupported</a></code>(<var title="">commandId</var>)</dt>
        !           384: 
        !           385:    <dd>
        !           386: 
        !           387:     <p>Returns true if the command is supported; otherwise, returns false.</p>
        !           388: 
        !           389:    </dd>
        !           390: 
        !           391:    <dt><var title="">document</var> . <code id="dom-document-querycommandvalue" title="dom-document-queryCommandValue"><a href="#dom-document-querycommandvalue">queryCommandValue</a></code>(<var title="">commandId</var>)</dt>
        !           392: 
        !           393:    <dd>
        !           394: 
        !           395:     <p>Returns the value of the command, as described in the list below.</p>
        !           396: 
        !           397:    </dd>
        !           398: 
        !           399:   </dl><p>A document is <dfn aria-haspopup="true" id="ready-for-editing-host-commands" role="button" tabindex="0">ready for editing host commands</dfn> if it
        !           400:   has a selection that is entirely within an <a class="full-spec-link" href="http://dev.w3.org/html5/spec/editing.html#editing-host" title='Read about this "editing host" reference in the full HTML5 spec.'>editing
        !           401:   host</a>, or if it has no selection but its caret is inside an
        !           402:   <a class="full-spec-link" href="http://dev.w3.org/html5/spec/editing.html#editing-host" title='Read about this "editing host" reference in the full HTML5 spec.'>editing host</a>.<p>The possible values for <var title="">commandId</var>, and their
        !           403:   corresponding meanings, are as follows. <dl><dt><dfn aria-haspopup="true" id="command-bold" role="button" tabindex="0"><code>bold</code></dfn></dt>
        !           404:    <dd><strong>Summary</strong>: Toggles whether the selection is bold.</dd>
        !           405:    
        !           406:    <dd><strong>Enabled When</strong>: The document is <a href="#ready-for-editing-host-commands" id="ready-for-editing-host-commands_0">ready for
        !           407:    editing host commands</a>.</dd>
        !           408:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           409:    <dd><strong>State</strong>: True if the selection, or the caret, if
        !           410:    there is no selection, is, or is contained within, a
        !           411:    <code><a href="the-b-element.html#the-b-element" id="b_17">b</a></code> element. False otherwise.</dd>
        !           412:    <dd><strong>Value</strong>: The string "<code title="">true</code>"
        !           413:    if the expression given for the "State" above is true, the string
        !           414:    "<code title="">false</code>" otherwise.</dd>
        !           415: 
        !           416:    <dt><dfn aria-haspopup="true" id="command-createlink" role="button" tabindex="0"><code>createLink</code></dfn></dt>
        !           417:    <dd><strong>Summary</strong>: Toggles whether the selection is a
        !           418:    link or not. If the second argument is true, and a link is to be
        !           419:    added, the user agent will ask the user for the address. Otherwise,
        !           420:    the third argument will be used as the address.</dd>
        !           421:    
        !           422:    <dd><strong>Enabled When</strong>: The document is <a href="#ready-for-editing-host-commands" id="ready-for-editing-host-commands_1">ready for
        !           423:    editing host commands</a>.</dd>
        !           424:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           425:    <dd><strong>State</strong>: Always false.</dd>
        !           426:    <dd><strong>Value</strong>: Always the string "<code title="">false</code>".</dd>
        !           427: 
        !           428:    <dt><dfn aria-haspopup="true" id="command-delete" role="button" tabindex="0"><code>delete</code></dfn></dt>
        !           429:    <dd><strong>Summary</strong>: Deletes the selection or the
        !           430:    character before the cursor.</dd>
        !           431:    
        !           432:    <dd><strong>Enabled When</strong>: The document is <a href="#ready-for-editing-host-commands" id="ready-for-editing-host-commands_2">ready for
        !           433:    editing host commands</a>.</dd>
        !           434:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           435:    <dd><strong>State</strong>: Always false.</dd>
        !           436:    <dd><strong>Value</strong>: Always the string "<code title="">false</code>".</dd>
        !           437: 
        !           438:    <dt><dfn aria-haspopup="true" id="command-formatblock" role="button" tabindex="0"><code>formatBlock</code></dfn></dt>
        !           439:    <dd><strong>Summary</strong>: Wraps the selection in the element
        !           440:    given by the third argument. If the third argument doesn't
        !           441:    specify an element that is a <dfn aria-haspopup="true" id="formatblock-candidate" role="button" tabindex="0"><code title="">formatBlock</code>
        !           442:    candidate</dfn>, does nothing.</dd>
        !           443:    
        !           444:    <dd><strong>Enabled When</strong>: The document is <a href="#ready-for-editing-host-commands" id="ready-for-editing-host-commands_3">ready for
        !           445:    editing host commands</a>.</dd>
        !           446:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           447:    <dd><strong>State</strong>: Always false.</dd>
        !           448:    <dd><strong>Value</strong>: Always the string "<code title="">false</code>".</dd>
        !           449: 
        !           450:    <dt><dfn aria-haspopup="true" id="command-forwarddelete" role="button" tabindex="0"><code>forwardDelete</code></dfn></dt>
        !           451:    <dd><strong>Summary</strong>: Deletes the selection or the
        !           452:    character after the cursor.</dd>
        !           453:    
        !           454:    <dd><strong>Enabled When</strong>: The document is <a href="#ready-for-editing-host-commands" id="ready-for-editing-host-commands_4">ready for
        !           455:    editing host commands</a>.</dd>
        !           456:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           457:    <dd><strong>State</strong>: Always false.</dd>
        !           458:    <dd><strong>Value</strong>: Always the string "<code title="">false</code>".</dd>
        !           459: 
        !           460:    <dt><dfn aria-haspopup="true" id="command-insertimage" role="button" tabindex="0"><code>insertImage</code></dfn></dt>
        !           461:    <dd><strong>Summary</strong>: Toggles whether the selection is an
        !           462:    image or not. If the second argument is true, and an image is to be
        !           463:    added, the user agent will ask the user for the address. Otherwise,
        !           464:    the third argument will be used as the address.</dd>
        !           465:    
        !           466:    <dd><strong>Enabled When</strong>: The document is <a href="#ready-for-editing-host-commands" id="ready-for-editing-host-commands_5">ready for
        !           467:    editing host commands</a>.</dd>
        !           468:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           469:    <dd><strong>State</strong>: Always false.</dd>
        !           470:    <dd><strong>Value</strong>: Always the string "<code title="">false</code>".</dd>
        !           471: 
        !           472:    <dt><dfn aria-haspopup="true" id="command-inserthtml" role="button" tabindex="0"><code>insertHTML</code></dfn></dt>
        !           473:    <dd><strong>Summary</strong>: Replaces the selection with the value
        !           474:    of the third argument parsed as HTML.</dd>
        !           475:    
        !           476:    <dd><strong>Enabled When</strong>: The document is <a href="#ready-for-editing-host-commands" id="ready-for-editing-host-commands_6">ready for
        !           477:    editing host commands</a>.</dd>
        !           478:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           479:    <dd><strong>State</strong>: Always false.</dd>
        !           480:    <dd><strong>Value</strong>: Always the string "<code title="">false</code>".</dd>
        !           481: 
        !           482:    <dt><dfn aria-haspopup="true" id="command-insertlinebreak" role="button" tabindex="0"><code>insertLineBreak</code></dfn></dt>
        !           483:    <dd><strong>Summary</strong>: Inserts a line break.</dd>
        !           484:    
        !           485:    <dd><strong>Enabled When</strong>: The document is <a href="#ready-for-editing-host-commands" id="ready-for-editing-host-commands_7">ready for
        !           486:    editing host commands</a>.</dd>
        !           487:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           488:    <dd><strong>State</strong>: Always false.</dd>
        !           489:    <dd><strong>Value</strong>: Always the string "<code title="">false</code>".</dd>
        !           490: 
        !           491:    <dt><dfn aria-haspopup="true" id="command-insertorderedlist" role="button" tabindex="0"><code>insertOrderedList</code></dfn></dt>
        !           492:    <dd><strong>Summary</strong>: Toggles whether the selection is an ordered list.</dd>
        !           493:    
        !           494:    <dd><strong>Enabled When</strong>: The document is <a href="#ready-for-editing-host-commands" id="ready-for-editing-host-commands_8">ready for
        !           495:    editing host commands</a>.</dd>
        !           496:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           497:    <dd><strong>State</strong>: Always false.</dd>
        !           498:    <dd><strong>Value</strong>: Always the string "<code title="">false</code>".</dd>
        !           499: 
        !           500:    <dt><dfn aria-haspopup="true" id="command-insertunorderedlist" role="button" tabindex="0"><code>insertUnorderedList</code></dfn></dt>
        !           501:    <dd><strong>Summary</strong>: Toggles whether the selection is an unordered list.</dd>
        !           502:    
        !           503:    <dd><strong>Enabled When</strong>: The document is <a href="#ready-for-editing-host-commands" id="ready-for-editing-host-commands_9">ready for
        !           504:    editing host commands</a>.</dd>
        !           505:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           506:    <dd><strong>State</strong>: Always false.</dd>
        !           507:    <dd><strong>Value</strong>: Always the string "<code title="">false</code>".</dd>
        !           508: 
        !           509:    <dt><dfn aria-haspopup="true" id="command-insertparagraph" role="button" tabindex="0"><code>insertParagraph</code></dfn></dt>
        !           510:    <dd><strong>Summary</strong>: Inserts a paragraph break.</dd>
        !           511:    
        !           512:    <dd><strong>Enabled When</strong>: The document is <a href="#ready-for-editing-host-commands" id="ready-for-editing-host-commands_10">ready for
        !           513:    editing host commands</a>.</dd>
        !           514:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           515:    <dd><strong>State</strong>: Always false.</dd>
        !           516:    <dd><strong>Value</strong>: Always the string "<code title="">false</code>".</dd>
        !           517: 
        !           518:    <dt><dfn aria-haspopup="true" id="command-inserttext" role="button" tabindex="0"><code>insertText</code></dfn></dt>
        !           519:    <dd><strong>Summary</strong>: Inserts the text given in the third parameter.</dd>
        !           520:    
        !           521:    <dd><strong>Enabled When</strong>: The document is <a href="#ready-for-editing-host-commands" id="ready-for-editing-host-commands_11">ready for
        !           522:    editing host commands</a>.</dd>
        !           523:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           524:    <dd><strong>State</strong>: Always false.</dd>
        !           525:    <dd><strong>Value</strong>: Always the string "<code title="">false</code>".</dd>
        !           526: 
        !           527:    <dt><dfn aria-haspopup="true" id="command-italic" role="button" tabindex="0"><code>italic</code></dfn></dt>
        !           528:    <dd><strong>Summary</strong>: Toggles whether the selection is italic.</dd>
        !           529:    
        !           530:    <dd><strong>Enabled When</strong>: The document is <a href="#ready-for-editing-host-commands" id="ready-for-editing-host-commands_12">ready for
        !           531:    editing host commands</a>.</dd>
        !           532:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           533:    <dd><strong>State</strong>: True if the selection, or the caret, if
        !           534:    there is no selection, is, or is contained within, a
        !           535:    <code><a href="the-i-element.html#the-i-element" id="i_26">i</a></code> element. False otherwise.</dd>
        !           536:    <dd><strong>Value</strong>: The string "<code title="">true</code>"
        !           537:    if the expression given for the "State" above is true, the string
        !           538:    "<code title="">false</code>" otherwise.</dd>
        !           539: 
        !           540:    <dt><dfn aria-haspopup="true" id="command-redo" role="button" tabindex="0"><code>redo</code></dfn></dt>
        !           541:    <dd><strong>Summary</strong>: Acts as if the user had requested a redo.</dd>
        !           542:    
        !           543:    <dd><strong>Enabled When</strong>: The <span>undo position</span>
        !           544:    is not at the end of the <span>undo transaction
        !           545:    history</span>.</dd>
        !           546:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           547:    <dd><strong>State</strong>: Always false.</dd>
        !           548:    <dd><strong>Value</strong>: Always the string "<code title="">false</code>".</dd>
        !           549: 
        !           550:    <dt><dfn aria-haspopup="true" id="command-selectall" role="button" tabindex="0"><code>selectAll</code></dfn></dt>
        !           551:    <dd><strong>Summary</strong>: Selects all the editable content.</dd>
        !           552:    
        !           553:    <dd><strong>Enabled When</strong>: Always.</dd>
        !           554:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           555:    <dd><strong>State</strong>: Always false.</dd>
        !           556:    <dd><strong>Value</strong>: Always the string "<code title="">false</code>".</dd>
        !           557: 
        !           558:    <dt><dfn aria-haspopup="true" id="command-subscript" role="button" tabindex="0"><code>subscript</code></dfn></dt>
        !           559:    <dd><strong>Summary</strong>: Toggles whether the selection is subscripted.</dd>
        !           560:    
        !           561:    <dd><strong>Enabled When</strong>: The document is <a href="#ready-for-editing-host-commands" id="ready-for-editing-host-commands_13">ready for
        !           562:    editing host commands</a>.</dd>
        !           563:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           564:    <dd><strong>State</strong>: True if the selection, or the caret, if
        !           565:    there is no selection, is, or is contained within, a
        !           566:    <code><a href="the-sub-and-sup-elements.html#the-sub-and-sup-elements" id="sub_7">sub</a></code> element. False otherwise.</dd>
        !           567:    <dd><strong>Value</strong>: The string "<code title="">true</code>"
        !           568:    if the expression given for the "State" above is true, the string
        !           569:    "<code title="">false</code>" otherwise.</dd>
        !           570: 
        !           571:    <dt><dfn aria-haspopup="true" id="command-superscript" role="button" tabindex="0"><code>superscript</code></dfn></dt>
        !           572:    <dd><strong>Summary</strong>: Toggles whether the selection is superscripted.</dd>
        !           573:    
        !           574:    <dd><strong>Enabled When</strong>: The document is <a href="#ready-for-editing-host-commands" id="ready-for-editing-host-commands_14">ready for
        !           575:    editing host commands</a>.</dd>
        !           576:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           577:    <dd><strong>State</strong>: True if the selection, or the caret, if
        !           578:    there is no selection, is, or is contained within, a
        !           579:    <code><a href="the-sub-and-sup-elements.html#the-sub-and-sup-elements" id="sup_5">sup</a></code> element. False otherwise.</dd>
        !           580:    <dd><strong>Value</strong>: The string "<code title="">true</code>"
        !           581:    if the expression given for the "State" above is true, the string
        !           582:    "<code title="">false</code>" otherwise.</dd>
        !           583: 
        !           584:    <dt><dfn aria-haspopup="true" id="command-undo" role="button" tabindex="0"><code>undo</code></dfn></dt>
        !           585:    <dd><strong>Summary</strong>: Acts as if the user had requested an undo.</dd>
        !           586:    
        !           587:    <dd><strong>Enabled When</strong>: The <span>undo position</span>
        !           588:    is not at the start of the <span>undo transaction
        !           589:    history</span>.</dd>
        !           590:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           591:    <dd><strong>State</strong>: Always false.</dd>
        !           592:    <dd><strong>Value</strong>: Always the string "<code title="">false</code>".</dd>
        !           593: 
        !           594:    <dt><dfn aria-haspopup="true" id="command-unlink" role="button" tabindex="0"><code>unlink</code></dfn></dt>
        !           595:    <dd><strong>Summary</strong>: Removes all links from the selection.</dd>
        !           596:    
        !           597:    <dd><strong>Enabled When</strong>: The document has a selection
        !           598:    that is entirely within an <a class="full-spec-link" href="http://dev.w3.org/html5/spec/editing.html#editing-host" title='Read about this "editing host" reference in the full HTML5 spec.'>editing host</a> and that
        !           599:    contains (either partially or completely) at least one
        !           600:    <code><a href="the-a-element.html#the-a-element" id="a_59">a</a></code> element that has an <code title="attr-hyperlink-href"><a href="links.html#attr-hyperlink-href" id="href_31">href</a></code> attribute.</dd>
        !           601:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           602:    <dd><strong>State</strong>: Always false.</dd>
        !           603:    <dd><strong>Value</strong>: Always the string "<code title="">false</code>".</dd>
        !           604: 
        !           605:    <dt><dfn aria-haspopup="true" id="command-unselect" role="button" tabindex="0"><code>unselect</code></dfn></dt>
        !           606:    <dd><strong>Summary</strong>: Unselects everything.</dd>
        !           607:    
        !           608:    <dd><strong>Enabled When</strong>: Always.</dd>
        !           609:    <dd><strong>Indeterminate When</strong>: Never.</dd>
        !           610:    <dd><strong>State</strong>: Always false.</dd>
        !           611:    <dd><strong>Value</strong>: Always the string "<code title="">false</code>".</dd>
        !           612: 
        !           613:    
        !           614:    
        !           615:    
        !           616:    
        !           617:    
        !           618:    
        !           619: 
        !           620:    
        !           621:    
        !           622:    
        !           623:    
        !           624:    
        !           625:    
        !           626: 
        !           627:   </dl>

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