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;
12 var Sizzle = function(selector, context, results, seed) {
13 var doCache = !results;
14 results = results || [];
15 context = context || document;
17 if ( context.nodeType !== 1 && context.nodeType !== 9 )
20 if ( !selector || typeof selector !== "string" ) {
24 var parts = [], m, set, checkSet, check, mode, extra, prune = true;
26 // Reset the position of the chunker regexp (start from head)
27 chunker.lastIndex = 0;
29 while ( (m = chunker.exec(selector)) !== null ) {
33 extra = RegExp.rightContext;
38 if ( parts.length > 1 && Expr.match.POS.exec( selector ) ) {
39 if ( parts.length === 2 && Expr.relative[ parts[0] ] ) {
40 var later = "", match;
42 // Position selectors must be done after the filter
43 while ( (match = Expr.match.POS.exec( selector )) ) {
45 selector = selector.replace( Expr.match.POS, "" );
48 set = Sizzle.filter( later, Sizzle( selector, context ) );
50 set = Expr.relative[ parts[0] ] ?
52 Sizzle( parts.shift(), context );
54 while ( parts.length ) {
57 selector = parts.shift();
58 if ( Expr.relative[ selector ] )
59 selector += parts.shift();
61 for ( var i = 0, l = set.length; i < l; i++ ) {
62 Sizzle( selector, set[i], tmpSet );
70 { expr: parts.pop(), set: makeArray(seed) } :
71 Sizzle.find( parts.pop(), parts.length === 1 && context.parentNode ? context.parentNode : context );
72 set = Sizzle.filter( ret.expr, ret.set );
74 if ( parts.length > 0 ) {
75 checkSet = makeArray(set);
80 while ( parts.length ) {
81 var cur = parts.pop(), pop = cur;
83 if ( !Expr.relative[ cur ] ) {
93 Expr.relative[ cur ]( checkSet, pop );
102 throw "Syntax error, unrecognized expression: " + (cur || selector);
105 if ( checkSet instanceof Array ) {
107 results.push.apply( results, checkSet );
108 } else if ( context.nodeType === 1 ) {
109 for ( var i = 0; checkSet[i] != null; i++ ) {
110 if ( checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && contains(context, checkSet[i])) ) {
111 results.push( set[i] );
115 for ( var i = 0; checkSet[i] != null; i++ ) {
116 if ( checkSet[i] && checkSet[i].nodeType === 1 ) {
117 results.push( set[i] );
122 makeArray( checkSet, results );
126 Sizzle( extra, context, results, seed );
132 Sizzle.matches = function(expr, set){
133 return Sizzle(expr, null, null, set);
136 Sizzle.find = function(expr, context){
143 for ( var i = 0, l = Expr.order.length; i < l; i++ ) {
144 var type = Expr.order[i], match;
146 if ( (match = Expr.match[ type ].exec( expr )) ) {
147 var left = RegExp.leftContext;
149 if ( left.substr( left.length - 1 ) !== "\\" ) {
150 match[1] = (match[1] || "").replace(/\\/g, "");
151 set = Expr.find[ type ]( match, context );
153 expr = expr.replace( Expr.match[ type ], "" );
161 set = context.getElementsByTagName("*");
164 return {set: set, expr: expr};
167 Sizzle.filter = function(expr, set, inplace, not){
168 var old = expr, result = [], curLoop = set, match, anyFound;
170 while ( expr && set.length ) {
171 for ( var type in Expr.filter ) {
172 if ( (match = Expr.match[ type ].exec( expr )) != null ) {
173 var filter = Expr.filter[ type ], goodArray = null, goodPos = 0, found, item;
176 if ( curLoop == result ) {
180 if ( Expr.preFilter[ type ] ) {
181 match = Expr.preFilter[ type ]( match, curLoop, inplace, result, not );
184 anyFound = found = true;
185 } else if ( match[0] === true ) {
187 var last = null, elem;
188 for ( var i = 0; (elem = curLoop[i]) !== undefined; i++ ) {
189 if ( elem && last !== elem ) {
190 goodArray.push( elem );
198 for ( var i = 0; (item = curLoop[i]) !== undefined; i++ ) {
200 if ( goodArray && item != goodArray[goodPos] ) {
204 found = filter( item, match, goodPos, goodArray );
205 var pass = not ^ !!found;
207 if ( inplace && found != null ) {
221 if ( found !== undefined ) {
226 expr = expr.replace( Expr.match[ type ], "" );
237 expr = expr.replace(/\s*,\s*/, "");
239 // Improper expression
241 if ( anyFound == null ) {
242 throw "Syntax error, unrecognized expression: " + expr;
254 var Expr = Sizzle.selectors = {
255 order: [ "ID", "NAME", "TAG" ],
257 ID: /#((?:[\w\u0128-\uFFFF_-]|\\.)+)/,
258 CLASS: /\.((?:[\w\u0128-\uFFFF_-]|\\.)+)/,
259 NAME: /\[name=['"]*((?:[\w\u0128-\uFFFF_-]|\\.)+)['"]*\]/,
260 ATTR: /\[((?:[\w\u0128-\uFFFF_-]|\\.)+)\s*(?:(\S?=)\s*(['"]*)(.*?)\3|)\]/,
261 TAG: /^((?:[\w\u0128-\uFFFF\*_-]|\\.)+)/,
262 CHILD: /:(only|nth|last|first)-child\(?(even|odd|[\dn+-]*)\)?/,
263 POS: /:(nth|eq|gt|lt|first|last|even|odd)\(?(\d*)\)?(?:[^-]|$)/,
264 PSEUDO: /:((?:[\w\u0128-\uFFFF_-]|\\.)+)(?:\((['"]*)((?:\([^\)]+\)|[^\2\(\)]*)+)\2\))?/
270 "+": function(checkSet, part){
271 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
272 var elem = checkSet[i];
274 var cur = elem.previousSibling;
275 while ( cur && cur.nodeType !== 1 ) {
276 cur = cur.previousSibling;
278 checkSet[i] = typeof part === "string" ?
284 if ( typeof part === "string" ) {
285 Sizzle.filter( part, checkSet, true );
288 ">": function(checkSet, part){
289 if ( typeof part === "string" && !/\W/.test(part) ) {
290 part = part.toUpperCase();
292 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
293 var elem = checkSet[i];
295 var parent = elem.parentNode;
296 checkSet[i] = parent.nodeName === part ? parent : false;
300 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
301 var elem = checkSet[i];
303 checkSet[i] = typeof part === "string" ?
305 elem.parentNode === part;
309 if ( typeof part === "string" ) {
310 Sizzle.filter( part, checkSet, true );
314 "": function(checkSet, part){
315 var doneName = "done" + (done++), checkFn = dirCheck;
317 if ( !part.match(/\W/) ) {
318 var nodeCheck = part = part.toUpperCase();
319 checkFn = dirNodeCheck;
322 checkFn("parentNode", part, doneName, checkSet, nodeCheck);
324 "~": function(checkSet, part){
325 var doneName = "done" + (done++), checkFn = dirCheck;
327 if ( typeof part === "string" && !part.match(/\W/) ) {
328 var nodeCheck = part = part.toUpperCase();
329 checkFn = dirNodeCheck;
332 checkFn("previousSibling", part, doneName, checkSet, nodeCheck);
336 ID: function(match, context){
337 if ( context.getElementById ) {
338 var m = context.getElementById(match[1]);
342 NAME: function(match, context){
343 return context.getElementsByName ? context.getElementsByName(match[1]) : null;
345 TAG: function(match, context){
346 return context.getElementsByTagName(match[1]);
350 CLASS: function(match, curLoop, inplace, result, not){
351 match = " " + match[1].replace(/\\/g, "") + " ";
353 for ( var i = 0; curLoop[i]; i++ ) {
354 if ( not ^ (" " + curLoop[i].className + " ").indexOf(match) >= 0 ) {
356 result.push( curLoop[i] );
357 } else if ( inplace ) {
367 TAG: function(match){
368 return match[1].toUpperCase();
370 CHILD: function(match){
371 if ( match[1] == "nth" ) {
372 // parse equations like 'even', 'odd', '5', '2n', '3n+2', '4n-1', '-n+6'
373 var test = /(-?)(\d*)n((?:\+|-)?\d*)/.exec(
374 match[2] == "even" && "2n" || match[2] == "odd" && "2n+1" ||
375 !/\D/.test( match[2] ) && "0n+" + match[2] || match[2]);
377 // calculate the numbers (first)n+(last) including if they are negative
378 match[2] = (test[1] + (test[2] || 1)) - 0;
379 match[3] = test[3] - 0;
382 // TODO: Move to normal caching system
383 match[0] = "done" + (done++);
387 ATTR: function(match){
390 if ( Expr.attrMap[name] ) {
391 match[1] = Expr.attrMap[name];
394 if ( match[2] === "~=" ) {
395 match[4] = " " + match[4] + " ";
400 PSEUDO: function(match, curLoop, inplace, result, not){
401 if ( match[1] === "not" ) {
402 // If we're dealing with a complex expression, or a simple one
403 if ( match[3].match(chunker).length > 1 ) {
404 match[3] = Sizzle(match[3], null, null, curLoop);
406 var ret = Sizzle.filter(match[3], curLoop, inplace, true ^ not);
408 result.push.apply( result, ret );
416 POS: function(match){
417 match.unshift( true );
422 enabled: function(elem){
423 return elem.disabled === false && elem.type !== "hidden";
425 disabled: function(elem){
426 return elem.disabled === true;
428 checked: function(elem){
429 return elem.checked === true;
431 selected: function(elem){
432 // Accessing this property makes selected-by-default
433 // options in Safari work properly
434 elem.parentNode.selectedIndex;
435 return elem.selected === true;
437 parent: function(elem){
438 return !!elem.firstChild;
440 empty: function(elem){
441 return !elem.firstChild;
443 has: function(elem, i, match){
444 return !!Sizzle( match[3], elem ).length;
446 header: function(elem){
447 return /h\d/i.test( elem.nodeName );
449 text: function(elem){
450 return "text" === elem.type;
452 radio: function(elem){
453 return "radio" === elem.type;
455 checkbox: function(elem){
456 return "checkbox" === elem.type;
458 file: function(elem){
459 return "file" === elem.type;
461 password: function(elem){
462 return "password" === elem.type;
464 submit: function(elem){
465 return "submit" === elem.type;
467 image: function(elem){
468 return "image" === elem.type;
470 reset: function(elem){
471 return "reset" === elem.type;
473 button: function(elem){
474 return "button" === elem.type || elem.nodeName.toUpperCase() === "BUTTON";
476 input: function(elem){
477 return /input|select|textarea|button/i.test(elem.nodeName);
481 first: function(elem, i){
484 last: function(elem, i, match, array){
485 return i === array.length - 1;
487 even: function(elem, i){
490 odd: function(elem, i){
493 lt: function(elem, i, match){
494 return i < match[3] - 0;
496 gt: function(elem, i, match){
497 return i > match[3] - 0;
499 nth: function(elem, i, match){
500 return match[3] - 0 == i;
502 eq: function(elem, i, match){
503 return match[3] - 0 == i;
507 CHILD: function(elem, match){
508 var type = match[1], parent = elem.parentNode;
510 var doneName = match[0];
512 if ( parent && !parent[ doneName ] ) {
515 for ( var node = parent.firstChild; node; node = node.nextSibling ) {
516 if ( node.nodeType == 1 ) {
517 node.nodeIndex = count++;
521 parent[ doneName ] = count - 1;
524 if ( type == "first" ) {
525 return elem.nodeIndex == 1;
526 } else if ( type == "last" ) {
527 return elem.nodeIndex == parent[ doneName ];
528 } else if ( type == "only" ) {
529 return parent[ doneName ] == 1;
530 } else if ( type == "nth" ) {
531 var add = false, first = match[2], last = match[3];
533 if ( first == 1 && last == 0 ) {
538 if ( elem.nodeIndex == last ) {
541 } else if ( (elem.nodeIndex - last) % first == 0 && (elem.nodeIndex - last) / first >= 0 ) {
548 PSEUDO: function(elem, match, i, array){
549 var name = match[1], filter = Expr.filters[ name ];
552 return filter( elem, i, match, array );
553 } else if ( name === "contains" ) {
554 return (elem.textContent || elem.innerText || "").indexOf(match[3]) >= 0;
555 } else if ( name === "not" ) {
558 for ( var i = 0, l = not.length; i < l; i++ ) {
559 if ( not[i] === elem ) {
567 ID: function(elem, match){
568 return elem.nodeType === 1 && elem.getAttribute("id") === match;
570 TAG: function(elem, match){
571 return (match === "*" && elem.nodeType === 1) || elem.nodeName === match;
573 CLASS: function(elem, match){
574 return match.test( elem.className );
576 ATTR: function(elem, match){
577 var result = elem[ match[1] ] || elem.getAttribute( match[1] ), value = result + "", type = match[2], check = match[4];
578 return result == null ?
583 value.indexOf(check) >= 0 :
585 (" " + value + " ").indexOf(check) >= 0 :
591 value.indexOf(check) === 0 :
593 value.substr(value.length - check.length) === check :
595 value === check || value.substr(0, check.length + 1) === check + "-" :
598 POS: function(elem, match, i, array){
599 var name = match[2], filter = Expr.setFilters[ name ];
602 return filter( elem, i, match, array );
608 for ( var type in Expr.match ) {
609 Expr.match[ type ] = RegExp( Expr.match[ type ].source + /(?![^\[]*\])(?![^\(]*\))/.source );
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, seed){
716 context = context || document;
718 if ( !seed && context.nodeType === 9 ) {
720 return makeArray( context.querySelectorAll(query), extra );
724 return oldSizzle(query, context, extra, seed);
727 Sizzle.find = oldSizzle.find;
728 Sizzle.filter = oldSizzle.filter;
729 Sizzle.selectors = oldSizzle.selectors;
730 Sizzle.matches = oldSizzle.matches;
733 if ( document.documentElement.getElementsByClassName ) {
734 Expr.order.splice(1, 0, "CLASS");
735 Expr.find.CLASS = function(match, context) {
736 return context.getElementsByClassName(match[1]);
740 function dirNodeCheck( dir, cur, doneName, checkSet, nodeCheck ) {
741 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
742 var elem = checkSet[i];
747 while ( elem && elem.nodeType ) {
748 var done = elem[doneName];
750 match = checkSet[ done ];
754 if ( elem.nodeType === 1 )
757 if ( elem.nodeName === cur ) {
770 function dirCheck( dir, cur, doneName, checkSet, nodeCheck ) {
771 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
772 var elem = checkSet[i];
777 while ( elem && elem.nodeType ) {
778 if ( elem[doneName] ) {
779 match = checkSet[ elem[doneName] ];
783 if ( elem.nodeType === 1 ) {
786 if ( typeof cur !== "string" ) {
787 if ( elem === cur ) {
792 } else if ( Sizzle.filter( cur, [elem] ).length > 0 ) {
806 var contains = document.compareDocumentPosition ? function(a, b){
807 return a.compareDocumentPosition(b) & 16;
809 return a !== b && (a.contains ? a.contains(b) : true);
813 jQuery.find = Sizzle;
814 jQuery.filter = Sizzle.filter;
815 jQuery.expr = Sizzle.selectors;
816 jQuery.expr[":"] = jQuery.expr.filters;
818 Sizzle.selectors.filters.hidden = function(elem){
819 return "hidden" === elem.type ||
820 jQuery.css(elem, "display") === "none" ||
821 jQuery.css(elem, "visibility") === "hidden";
824 Sizzle.selectors.filters.visible = function(elem){
825 return "hidden" !== elem.type &&
826 jQuery.css(elem, "display") !== "none" &&
827 jQuery.css(elem, "visibility") !== "hidden";
830 Sizzle.selectors.filters.animated = function(elem){
831 return jQuery.grep(jQuery.timers, function(fn){
832 return elem === fn.elem;
836 jQuery.multiFilter = function( expr, elems, not ) {
838 expr = ":not(" + expr + ")";
841 return Sizzle.matches(expr, elems);
844 jQuery.dir = function( elem, dir ){
845 var matched = [], cur = elem[dir];
846 while ( cur && cur != document ) {
847 if ( cur.nodeType == 1 )
854 jQuery.nth = function(cur, result, dir, elem){
855 result = result || 1;
858 for ( ; cur; cur = cur[dir] )
859 if ( cur.nodeType == 1 && ++num == result )
865 jQuery.sibling = function(n, elem){
868 for ( ; n; n = n.nextSibling ) {
869 if ( n.nodeType == 1 && n != elem )
878 window.Sizzle = Sizzle;