2 * Sizzle CSS Selector Engine - v0.9
3 * Copyright 2009, John Resig (http://ejohn.org/)
4 * released under the MIT License
8 var chunker = /((?:\((?:\([^()]+\)|[^()]+)+\)|\[(?:\[[^[\]]+\]|[^[\]]+)+\]|\\.|[^ >+~,(\[]+)+|[>+~])(\s*,\s*)?/g;
13 if ( document.addEventListener && !document.querySelectorAll ) {
15 var invalidate = function(){ cache = {}; };
16 document.addEventListener("DOMAttrModified", invalidate, false);
17 document.addEventListener("DOMNodeInserted", invalidate, false);
18 document.addEventListener("DOMNodeRemoved", invalidate, false);
21 var Sizzle = function(selector, context, results, seed) {
22 var doCache = !results;
23 results = results || [];
24 context = context || document;
26 if ( context.nodeType !== 1 && context.nodeType !== 9 )
29 if ( !selector || typeof selector !== "string" ) {
33 if ( cache && context === document && cache[ selector ] ) {
34 results.push.apply( results, cache[ selector ] );
38 var parts = [], m, set, checkSet, check, mode, extra;
40 // Reset the position of the chunker regexp (start from head)
41 chunker.lastIndex = 0;
43 while ( (m = chunker.exec(selector)) !== null ) {
47 extra = RegExp.rightContext;
52 if ( parts.length > 1 && Expr.match.POS.exec( selector ) ) {
53 if ( parts.length === 2 && Expr.relative[ parts[0] ] ) {
54 var later = "", match;
56 // Position selectors must be done after the filter
57 while ( (match = Expr.match.POS.exec( selector )) ) {
59 selector = selector.replace( Expr.match.POS, "" );
62 set = Sizzle.filter( later, Sizzle( selector, context ) );
64 set = Expr.relative[ parts[0] ] ?
66 Sizzle( parts.shift(), context );
68 while ( parts.length ) {
71 selector = parts.shift();
72 if ( Expr.relative[ selector ] )
73 selector += parts.shift();
75 for ( var i = 0, l = set.length; i < l; i++ ) {
76 Sizzle( selector, set[i], tmpSet );
84 { expr: parts.pop(), set: makeArray(seed) } :
85 Sizzle.find( parts.pop(), parts.length === 1 && context.parentNode ? context.parentNode : context );
86 set = Sizzle.filter( ret.expr, ret.set );
88 if ( parts.length > 0 ) {
89 checkSet = makeArray(set);
92 while ( parts.length ) {
93 var cur = parts.pop(), pop = cur;
95 if ( !Expr.relative[ cur ] ) {
105 Expr.relative[ cur ]( checkSet, pop );
114 throw "Syntax error, unrecognized expression: " + (cur || selector);
117 if ( checkSet instanceof Array ) {
118 if ( context.nodeType === 1 ) {
119 for ( var i = 0; checkSet[i] != null; i++ ) {
120 if ( checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && contains(context, checkSet[i])) ) {
121 results.push( set[i] );
125 for ( var i = 0; checkSet[i] != null; i++ ) {
126 if ( checkSet[i] && checkSet[i].nodeType === 1 ) {
127 results.push( set[i] );
132 makeArray( checkSet, results );
136 Sizzle( extra, context, results );
139 if ( cache && doCache ) {
140 cache[selector] = results.slice(0);
146 Sizzle.matches = function(expr, set){
147 return Sizzle(expr, null, null, set);
150 Sizzle.find = function(expr, context){
157 var later = "", match;
159 // Pseudo-selectors could contain other selectors (like :not)
160 while ( (match = Expr.match.PSEUDO.exec( expr )) ) {
161 var left = RegExp.leftContext;
163 if ( left.substr( left.length - 1 ) !== "\\" ) {
165 expr = expr.replace( Expr.match.PSEUDO, "" );
167 // TODO: Need a better solution, fails: .class\:foo:realfoo(#id)
172 for ( var i = 0, l = Expr.order.length; i < l; i++ ) {
173 var type = Expr.order[i];
175 if ( (match = Expr.match[ type ].exec( expr )) ) {
176 var left = RegExp.leftContext;
178 if ( left.substr( left.length - 1 ) !== "\\" ) {
179 match[1] = (match[1] || "").replace(/\\/g, "");
180 set = Expr.find[ type ]( match, context );
183 expr = expr.replace( Expr.match[ type ], "" );
191 set = context.getElementsByTagName("*");
196 return {set: set, expr: expr};
199 Sizzle.filter = function(expr, set, inplace){
200 var old = expr, result = [], curLoop = set, match;
202 while ( expr && set.length ) {
203 for ( var type in Expr.filter ) {
204 if ( (match = Expr.match[ type ].exec( expr )) != null ) {
205 var anyFound = false, filter = Expr.filter[ type ], goodArray = null;
207 if ( curLoop == result ) {
211 if ( Expr.preFilter[ type ] ) {
212 match = Expr.preFilter[ type ]( match, curLoop );
214 if ( match[0] === true ) {
216 var last = null, elem;
217 for ( var i = 0; (elem = curLoop[i]) !== undefined; i++ ) {
218 if ( elem && last !== elem ) {
219 goodArray.push( elem );
227 var goodPos = 0, found, item;
229 for ( var i = 0; (item = curLoop[i]) !== undefined; i++ ) {
231 if ( goodArray && item != goodArray[goodPos] ) {
235 found = filter( item, match, goodPos, goodArray );
236 if ( inplace && found != null ) {
237 curLoop[i] = found ? curLoop[i] : false;
241 } else if ( found ) {
248 if ( found !== undefined ) {
253 expr = expr.replace( Expr.match[ type ], "" );
265 expr = expr.replace(/\s*,\s*/, "");
267 // Improper expression
269 throw "Syntax error, unrecognized expression: " + expr;
278 var Expr = Sizzle.selectors = {
279 order: [ "ID", "NAME", "TAG" ],
281 ID: /#((?:[\w\u0128-\uFFFF_-]|\\.)+)/,
282 CLASS: /\.((?:[\w\u0128-\uFFFF_-]|\\.)+)/,
283 NAME: /\[name=((?:[\w\u0128-\uFFFF_-]|\\.)+)\]/,
284 ATTR: /\[((?:[\w\u0128-\uFFFF_-]|\\.)+)\s*(?:(\S{0,1}=)\s*(['"]*)(.*?)\3|)\]/,
285 TAG: /^((?:[\w\u0128-\uFFFF\*_-]|\\.)+)/,
286 CHILD: /:(only|nth|last|first)-child\(?(even|odd|[\dn+-]*)\)?/,
287 POS: /:(nth|eq|gt|lt|first|last|even|odd)\(?(\d*)\)?(?:[^-]|$)/,
288 PSEUDO: /:((?:[\w\u0128-\uFFFF_-]|\\.)+)(?:\((['"]*)((?:\([^\)]+\)|[^\2\(\)]*)+)\2\))?/
294 "+": function(checkSet, part){
295 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
296 var elem = checkSet[i];
298 var cur = elem.previousSibling;
299 while ( cur && cur.nodeType !== 1 ) {
300 cur = cur.previousSibling;
302 checkSet[i] = typeof part === "string" ?
308 if ( typeof part === "string" ) {
309 Sizzle.filter( part, checkSet, true );
312 ">": function(checkSet, part){
313 if ( typeof part === "string" && !/\W/.test(part) ) {
314 part = part.toUpperCase();
316 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
317 var elem = checkSet[i];
319 var parent = elem.parentNode;
320 checkSet[i] = parent.nodeName === part ? parent : false;
324 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
325 var elem = checkSet[i];
327 checkSet[i] = typeof part === "string" ?
329 elem.parentNode === part;
333 if ( typeof part === "string" ) {
334 Sizzle.filter( part, checkSet, true );
338 "": function(checkSet, part){
339 var doneName = "done" + (done++), checkFn = dirCheck;
341 if ( !part.match(/\W/) ) {
342 var nodeCheck = part = part.toUpperCase();
343 checkFn = dirNodeCheck;
346 checkFn("parentNode", part, doneName, checkSet, nodeCheck);
348 "~": function(checkSet, part){
349 var doneName = "done" + (done++), checkFn = dirCheck;
351 if ( typeof part === "string" && !part.match(/\W/) ) {
352 var nodeCheck = part = part.toUpperCase();
353 checkFn = dirNodeCheck;
356 checkFn("previousSibling", part, doneName, checkSet, nodeCheck);
360 ID: function(match, context){
361 if ( context.getElementById ) {
362 var m = context.getElementById(match[1]);
366 NAME: function(match, context){
367 return context.getElementsByName(match[1]);
369 TAG: function(match, context){
370 return context.getElementsByTagName(match[1]);
374 CLASS: function(match){
375 return new RegExp( "(?:^|\\s)" + match[1] + "(?:\\s|$)" );
380 TAG: function(match){
381 return match[1].toUpperCase();
383 CHILD: function(match){
384 if ( match[1] == "nth" ) {
385 // parse equations like 'even', 'odd', '5', '2n', '3n+2', '4n-1', '-n+6'
386 var test = /(-?)(\d*)n((?:\+|-)?\d*)/.exec(
387 match[2] == "even" && "2n" || match[2] == "odd" && "2n+1" ||
388 !/\D/.test( match[2] ) && "0n+" + match[2] || match[2]);
390 // calculate the numbers (first)n+(last) including if they are negative
391 match[2] = (test[1] + (test[2] || 1)) - 0;
392 match[3] = test[3] - 0;
395 // TODO: Move to normal caching system
396 match[0] = "done" + (done++);
400 ATTR: function(match){
403 if ( Expr.attrMap[name] ) {
404 match[1] = Expr.attrMap[name];
407 if ( match[2] === "~=" ) {
408 match[4] = " " + match[4] + " ";
413 PSEUDO: function(match){
414 if ( match[1] === "not" ) {
415 match[3] = match[3].split(/\s*,\s*/);
420 POS: function(match){
421 match.unshift( true );
426 enabled: function(elem){
427 return elem.disabled === false && elem.type !== "hidden";
429 disabled: function(elem){
430 return elem.disabled === true;
432 checked: function(elem){
433 return elem.checked === true;
435 selected: function(elem){
436 // Accessing this property makes selected-by-default
437 // options in Safari work properly
438 elem.parentNode.selectedIndex;
439 return elem.selected === true;
441 parent: function(elem){
442 return !!elem.firstChild;
444 empty: function(elem){
445 return !elem.firstChild;
447 has: function(elem, i, match){
448 return !!Sizzle( match[3], elem ).length;
450 header: function(elem){
451 return /h\d/i.test( elem.nodeName );
453 text: function(elem){
454 return "text" === elem.type;
456 radio: function(elem){
457 return "radio" === elem.type;
459 checkbox: function(elem){
460 return "checkbox" === elem.type;
462 file: function(elem){
463 return "file" === elem.type;
465 password: function(elem){
466 return "password" === elem.type;
468 submit: function(elem){
469 return "submit" === elem.type;
471 image: function(elem){
472 return "image" === elem.type;
474 reset: function(elem){
475 return "reset" === elem.type;
477 button: function(elem){
478 return "button" === elem.type || elem.nodeName.toUpperCase() === "BUTTON";
480 input: function(elem){
481 return /input|select|textarea|button/i.test(elem.nodeName);
485 first: function(elem, i){
488 last: function(elem, i, match, array){
489 return i === array.length - 1;
491 even: function(elem, i){
494 odd: function(elem, i){
497 lt: function(elem, i, match){
498 return i < match[3] - 0;
500 gt: function(elem, i, match){
501 return i > match[3] - 0;
503 nth: function(elem, i, match){
504 return match[3] - 0 == i;
506 eq: function(elem, i, match){
507 return match[3] - 0 == i;
511 CHILD: function(elem, match){
512 var type = match[1], parent = elem.parentNode;
514 var doneName = match[0];
516 if ( parent && !parent[ doneName ] ) {
519 for ( var node = parent.firstChild; node; node = node.nextSibling ) {
520 if ( node.nodeType == 1 ) {
521 node.nodeIndex = count++;
525 parent[ doneName ] = count - 1;
528 if ( type == "first" ) {
529 return elem.nodeIndex == 1;
530 } else if ( type == "last" ) {
531 return elem.nodeIndex == parent[ doneName ];
532 } else if ( type == "only" ) {
533 return parent[ doneName ] == 1;
534 } else if ( type == "nth" ) {
535 var add = false, first = match[2], last = match[3];
537 if ( first == 1 && last == 0 ) {
542 if ( elem.nodeIndex == last ) {
545 } else if ( (elem.nodeIndex - last) % first == 0 && (elem.nodeIndex - last) / first >= 0 ) {
552 PSEUDO: function(elem, match, i, array){
553 var name = match[1], filter = Expr.filters[ name ];
556 return filter( elem, i, match, array )
557 } else if ( name === "contains" ) {
558 return (elem.textContent || elem.innerText || "").indexOf(match[3]) >= 0;
559 } else if ( name === "not" ) {
562 for ( var i = 0, l = not.length; i < l; i++ ) {
563 if ( Sizzle.filter(not[i], [elem]).length > 0 ) {
571 ID: function(elem, match){
572 return elem.nodeType === 1 && elem.getAttribute("id") === match;
574 TAG: function(elem, match){
575 return (match === "*" && elem.nodeType === 1) || elem.nodeName === match;
577 CLASS: function(elem, match){
578 return match.test( elem.className );
580 ATTR: function(elem, match){
581 var result = elem[ match[1] ] || elem.getAttribute( match[1] ), value = result + "", type = match[2], check = match[4];
582 return result == null ?
587 value.indexOf(check) >= 0 :
589 (" " + value + " ").indexOf(check) >= 0 :
595 value.indexOf(check) === 0 :
597 value.substr(value.length - check.length) === check :
599 value === check || value.substr(0, check.length + 1) === check + "-" :
602 POS: function(elem, match, i, array){
603 var name = match[2], filter = Expr.setFilters[ name ];
606 return filter( elem, i, match, array );
612 var makeArray = function(array, results) {
613 array = Array.prototype.slice.call( array );
616 results.push.apply( results, array );
623 // Perform a simple check to determine if the browser is capable of
624 // converting a NodeList to an array using builtin methods.
626 Array.prototype.slice.call( document.documentElement.childNodes );
628 // Provide a fallback method if it does not work
630 makeArray = function(array, results) {
631 var ret = results || [];
633 if ( array instanceof Array ) {
634 Array.prototype.push.apply( ret, array );
636 if ( typeof array.length === "number" ) {
637 for ( var i = 0, l = array.length; i < l; i++ ) {
638 ret.push( array[i] );
641 for ( var i = 0; array[i]; i++ ) {
642 ret.push( array[i] );
651 // Check to see if the browser returns elements by name when
652 // querying by getElementById (and provide a workaround)
654 // We're going to inject a fake input element with a specified name
655 var form = document.createElement("form"),
656 id = "script" + (new Date).getTime();
657 form.innerHTML = "<input name='" + id + "'/>";
659 // Inject it into the root element, check its status, and remove it quickly
660 var root = document.documentElement;
661 root.insertBefore( form, root.firstChild );
663 // The workaround has to do additional checks after a getElementById
664 // Which slows things down for other browsers (hence the branching)
665 if ( !!document.getElementById( id ) ) {
666 Expr.find.ID = function(match, context){
667 if ( context.getElementById ) {
668 var m = context.getElementById(match[1]);
669 return m ? m.id === match[1] || m.getAttributeNode && m.getAttributeNode("id").nodeValue === match[1] ? [m] : undefined : [];
673 Expr.filter.ID = function(elem, match){
674 var node = elem.getAttributeNode && elem.getAttributeNode("id");
675 return elem.nodeType === 1 && node && node.nodeValue === match;
679 root.removeChild( form );
682 // Check to see if the browser returns only elements
683 // when doing getElementsByTagName("*")
685 // Create a fake element
686 var div = document.createElement("div");
687 div.appendChild( document.createComment("") );
689 // Make sure no comments are found
690 if ( div.getElementsByTagName("*").length > 0 ) {
691 Expr.find.TAG = function(match, context){
692 var results = context.getElementsByTagName(match[1]);
694 // Filter out possible comments
695 if ( match[1] === "*" ) {
698 for ( var i = 0; results[i]; i++ ) {
699 if ( results[i].nodeType === 1 ) {
700 tmp.push( results[i] );
712 if ( document.querySelectorAll ) (function(){
713 var oldSizzle = Sizzle;
715 Sizzle = function(query, context, extra){
716 context = context || document;
718 if ( context.nodeType === 9 ) {
720 return makeArray( context.querySelectorAll(query) );
724 return oldSizzle(query, context, extra);
727 Sizzle.find = oldSizzle.find;
728 Sizzle.filter = oldSizzle.filter;
729 Sizzle.selectors = oldSizzle.selectors;
732 if ( document.documentElement.getElementsByClassName ) {
733 Expr.order.splice(1, 0, "CLASS");
734 Expr.find.CLASS = function(match, context) {
735 return context.getElementsByClassName(match[1]);
739 function dirNodeCheck( dir, cur, doneName, checkSet, nodeCheck ) {
740 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
741 var elem = checkSet[i];
746 while ( elem && elem.nodeType ) {
747 var done = elem[doneName];
749 match = checkSet[ done ];
753 if ( elem.nodeType === 1 )
756 if ( elem.nodeName === cur ) {
769 function dirCheck( dir, cur, doneName, checkSet, nodeCheck ) {
770 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
771 var elem = checkSet[i];
776 while ( elem && elem.nodeType ) {
777 if ( elem[doneName] ) {
778 match = checkSet[ elem[doneName] ];
782 if ( elem.nodeType === 1 ) {
785 if ( typeof cur !== "string" ) {
786 if ( elem === cur ) {
791 } else if ( Sizzle.filter( cur, [elem] ).length > 0 ) {
805 var contains = document.compareDocumentPosition ? function(a, b){
806 return a.compareDocumentPosition(b) & 16;
808 return a !== b && a.contains(b);
812 jQuery.find = Sizzle;
813 jQuery.filter = Sizzle.filter;
814 jQuery.expr = Sizzle.selectors;
815 jQuery.expr[":"] = jQuery.expr.filters;
817 Sizzle.selectors.filters.hidden = function(elem){
818 return "hidden" === elem.type ||
819 jQuery.css(elem, "display") === "none" ||
820 jQuery.css(elem, "visibility") === "hidden";
823 Sizzle.selectors.filters.visible = function(elem){
824 return "hidden" !== elem.type &&
825 jQuery.css(elem, "display") !== "none" &&
826 jQuery.css(elem, "visibility") !== "hidden";
829 jQuery.multiFilter = function( expr, elems, not ) {
831 return jQuery.multiFilter( ":not(" + expr + ")", elems );
834 var exprs = expr.split(/\s*,\s*/), cur = [];
836 for ( var i = 0; i < exprs.length; i++ ) {
837 cur = jQuery.merge( cur, jQuery.filter( exprs[i], elems ) );
843 jQuery.dir = function( elem, dir ){
844 var matched = [], cur = elem[dir];
845 while ( cur && cur != document ) {
846 if ( cur.nodeType == 1 )
853 jQuery.nth = function(cur, result, dir, elem){
854 result = result || 1;
857 for ( ; cur; cur = cur[dir] )
858 if ( cur.nodeType == 1 && ++num == result )
864 jQuery.sibling = function(n, elem){
867 for ( ; n; n = n.nextSibling ) {
868 if ( n.nodeType == 1 && n != elem )
877 window.Sizzle = Sizzle;