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;
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);
78 while ( parts.length ) {
79 var cur = parts.pop(), pop = cur;
81 if ( !Expr.relative[ cur ] ) {
91 Expr.relative[ cur ]( checkSet, pop );
100 throw "Syntax error, unrecognized expression: " + (cur || selector);
103 if ( checkSet instanceof Array ) {
104 if ( context.nodeType === 1 ) {
105 for ( var i = 0; checkSet[i] != null; i++ ) {
106 if ( checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && contains(context, checkSet[i])) ) {
107 results.push( set[i] );
111 for ( var i = 0; checkSet[i] != null; i++ ) {
112 if ( checkSet[i] && checkSet[i].nodeType === 1 ) {
113 results.push( set[i] );
118 makeArray( checkSet, results );
122 Sizzle( extra, context, results, seed );
128 Sizzle.matches = function(expr, set){
129 return Sizzle(expr, null, null, set);
132 Sizzle.find = function(expr, context){
139 for ( var i = 0, l = Expr.order.length; i < l; i++ ) {
140 var type = Expr.order[i], match;
142 if ( (match = Expr.match[ type ].exec( expr )) ) {
143 var left = RegExp.leftContext;
145 if ( left.substr( left.length - 1 ) !== "\\" ) {
146 match[1] = (match[1] || "").replace(/\\/g, "");
147 set = Expr.find[ type ]( match, context );
149 expr = expr.replace( Expr.match[ type ], "" );
157 set = context.getElementsByTagName("*");
160 return {set: set, expr: expr};
163 Sizzle.filter = function(expr, set, inplace){
164 var old = expr, result = [], curLoop = set, match, anyFound;
166 while ( expr && set.length ) {
167 for ( var type in Expr.filter ) {
168 if ( (match = Expr.match[ type ].exec( expr )) != null ) {
169 var filter = Expr.filter[ type ], goodArray = null, goodPos = 0, found, item;
172 if ( curLoop == result ) {
176 if ( Expr.preFilter[ type ] ) {
177 match = Expr.preFilter[ type ]( match, curLoop );
179 if ( match[0] === true ) {
181 var last = null, elem;
182 for ( var i = 0; (elem = curLoop[i]) !== undefined; i++ ) {
183 if ( elem && last !== elem ) {
184 goodArray.push( elem );
191 for ( var i = 0; (item = curLoop[i]) !== undefined; i++ ) {
193 if ( goodArray && item != goodArray[goodPos] ) {
197 found = filter( item, match, goodPos, goodArray );
198 if ( inplace && found != null ) {
199 curLoop[i] = found ? curLoop[i] : false;
203 } else if ( found ) {
210 if ( found !== undefined ) {
215 expr = expr.replace( Expr.match[ type ], "" );
226 expr = expr.replace(/\s*,\s*/, "");
228 // Improper expression
230 if ( anyFound == null ) {
231 throw "Syntax error, unrecognized expression: " + expr;
243 var Expr = Sizzle.selectors = {
244 order: [ "ID", "NAME", "TAG" ],
246 ID: /#((?:[\w\u0128-\uFFFF_-]|\\.)+)/,
247 CLASS: /\.((?:[\w\u0128-\uFFFF_-]|\\.)+)/,
248 NAME: /\[name=['"]*((?:[\w\u0128-\uFFFF_-]|\\.)+)['"]*\]/,
249 ATTR: /\[((?:[\w\u0128-\uFFFF_-]|\\.)+)\s*(?:(\S?=)\s*(['"]*)(.*?)\3|)\]/,
250 TAG: /^((?:[\w\u0128-\uFFFF\*_-]|\\.)+)/,
251 CHILD: /:(only|nth|last|first)-child\(?(even|odd|[\dn+-]*)\)?/,
252 POS: /:(nth|eq|gt|lt|first|last|even|odd)\(?(\d*)\)?(?:[^-]|$)/,
253 PSEUDO: /:((?:[\w\u0128-\uFFFF_-]|\\.)+)(?:\((['"]*)((?:\([^\)]+\)|[^\2\(\)]*)+)\2\))?/
259 "+": function(checkSet, part){
260 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
261 var elem = checkSet[i];
263 var cur = elem.previousSibling;
264 while ( cur && cur.nodeType !== 1 ) {
265 cur = cur.previousSibling;
267 checkSet[i] = typeof part === "string" ?
273 if ( typeof part === "string" ) {
274 Sizzle.filter( part, checkSet, true );
277 ">": function(checkSet, part){
278 if ( typeof part === "string" && !/\W/.test(part) ) {
279 part = part.toUpperCase();
281 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
282 var elem = checkSet[i];
284 var parent = elem.parentNode;
285 checkSet[i] = parent.nodeName === part ? parent : false;
289 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
290 var elem = checkSet[i];
292 checkSet[i] = typeof part === "string" ?
294 elem.parentNode === part;
298 if ( typeof part === "string" ) {
299 Sizzle.filter( part, checkSet, true );
303 "": function(checkSet, part){
304 var doneName = "done" + (done++), checkFn = dirCheck;
306 if ( !part.match(/\W/) ) {
307 var nodeCheck = part = part.toUpperCase();
308 checkFn = dirNodeCheck;
311 checkFn("parentNode", part, doneName, checkSet, nodeCheck);
313 "~": function(checkSet, part){
314 var doneName = "done" + (done++), checkFn = dirCheck;
316 if ( typeof part === "string" && !part.match(/\W/) ) {
317 var nodeCheck = part = part.toUpperCase();
318 checkFn = dirNodeCheck;
321 checkFn("previousSibling", part, doneName, checkSet, nodeCheck);
325 ID: function(match, context){
326 if ( context.getElementById ) {
327 var m = context.getElementById(match[1]);
331 NAME: function(match, context){
332 return context.getElementsByName ? context.getElementsByName(match[1]) : null;
334 TAG: function(match, context){
335 return context.getElementsByTagName(match[1]);
339 CLASS: function(match){
340 return new RegExp( "(?:^|\\s)" + match[1] + "(?:\\s|$)" );
345 TAG: function(match){
346 return match[1].toUpperCase();
348 CHILD: function(match){
349 if ( match[1] == "nth" ) {
350 // parse equations like 'even', 'odd', '5', '2n', '3n+2', '4n-1', '-n+6'
351 var test = /(-?)(\d*)n((?:\+|-)?\d*)/.exec(
352 match[2] == "even" && "2n" || match[2] == "odd" && "2n+1" ||
353 !/\D/.test( match[2] ) && "0n+" + match[2] || match[2]);
355 // calculate the numbers (first)n+(last) including if they are negative
356 match[2] = (test[1] + (test[2] || 1)) - 0;
357 match[3] = test[3] - 0;
360 // TODO: Move to normal caching system
361 match[0] = "done" + (done++);
365 ATTR: function(match){
368 if ( Expr.attrMap[name] ) {
369 match[1] = Expr.attrMap[name];
372 if ( match[2] === "~=" ) {
373 match[4] = " " + match[4] + " ";
378 PSEUDO: function(match, curLoop){
379 if ( match[1] === "not" ) {
380 // If we're dealing with a complex expression, or a simple one
381 match[3] = match[3].match(chunker).length > 1 ?
382 Sizzle(match[3], null, null, curLoop) :
383 Sizzle.filter(match[3], curLoop);
388 POS: function(match){
389 match.unshift( true );
394 enabled: function(elem){
395 return elem.disabled === false && elem.type !== "hidden";
397 disabled: function(elem){
398 return elem.disabled === true;
400 checked: function(elem){
401 return elem.checked === true;
403 selected: function(elem){
404 // Accessing this property makes selected-by-default
405 // options in Safari work properly
406 elem.parentNode.selectedIndex;
407 return elem.selected === true;
409 parent: function(elem){
410 return !!elem.firstChild;
412 empty: function(elem){
413 return !elem.firstChild;
415 has: function(elem, i, match){
416 return !!Sizzle( match[3], elem ).length;
418 header: function(elem){
419 return /h\d/i.test( elem.nodeName );
421 text: function(elem){
422 return "text" === elem.type;
424 radio: function(elem){
425 return "radio" === elem.type;
427 checkbox: function(elem){
428 return "checkbox" === elem.type;
430 file: function(elem){
431 return "file" === elem.type;
433 password: function(elem){
434 return "password" === elem.type;
436 submit: function(elem){
437 return "submit" === elem.type;
439 image: function(elem){
440 return "image" === elem.type;
442 reset: function(elem){
443 return "reset" === elem.type;
445 button: function(elem){
446 return "button" === elem.type || elem.nodeName.toUpperCase() === "BUTTON";
448 input: function(elem){
449 return /input|select|textarea|button/i.test(elem.nodeName);
453 first: function(elem, i){
456 last: function(elem, i, match, array){
457 return i === array.length - 1;
459 even: function(elem, i){
462 odd: function(elem, i){
465 lt: function(elem, i, match){
466 return i < match[3] - 0;
468 gt: function(elem, i, match){
469 return i > match[3] - 0;
471 nth: function(elem, i, match){
472 return match[3] - 0 == i;
474 eq: function(elem, i, match){
475 return match[3] - 0 == i;
479 CHILD: function(elem, match){
480 var type = match[1], parent = elem.parentNode;
482 var doneName = match[0];
484 if ( parent && !parent[ doneName ] ) {
487 for ( var node = parent.firstChild; node; node = node.nextSibling ) {
488 if ( node.nodeType == 1 ) {
489 node.nodeIndex = count++;
493 parent[ doneName ] = count - 1;
496 if ( type == "first" ) {
497 return elem.nodeIndex == 1;
498 } else if ( type == "last" ) {
499 return elem.nodeIndex == parent[ doneName ];
500 } else if ( type == "only" ) {
501 return parent[ doneName ] == 1;
502 } else if ( type == "nth" ) {
503 var add = false, first = match[2], last = match[3];
505 if ( first == 1 && last == 0 ) {
510 if ( elem.nodeIndex == last ) {
513 } else if ( (elem.nodeIndex - last) % first == 0 && (elem.nodeIndex - last) / first >= 0 ) {
520 PSEUDO: function(elem, match, i, array){
521 var name = match[1], filter = Expr.filters[ name ];
524 return filter( elem, i, match, array );
525 } else if ( name === "contains" ) {
526 return (elem.textContent || elem.innerText || "").indexOf(match[3]) >= 0;
527 } else if ( name === "not" ) {
530 for ( var i = 0, l = not.length; i < l; i++ ) {
531 if ( not[i] === elem ) {
539 ID: function(elem, match){
540 return elem.nodeType === 1 && elem.getAttribute("id") === match;
542 TAG: function(elem, match){
543 return (match === "*" && elem.nodeType === 1) || elem.nodeName === match;
545 CLASS: function(elem, match){
546 return match.test( elem.className );
548 ATTR: function(elem, match){
549 var result = elem[ match[1] ] || elem.getAttribute( match[1] ), value = result + "", type = match[2], check = match[4];
550 return result == null ?
555 value.indexOf(check) >= 0 :
557 (" " + value + " ").indexOf(check) >= 0 :
563 value.indexOf(check) === 0 :
565 value.substr(value.length - check.length) === check :
567 value === check || value.substr(0, check.length + 1) === check + "-" :
570 POS: function(elem, match, i, array){
571 var name = match[2], filter = Expr.setFilters[ name ];
574 return filter( elem, i, match, array );
580 for ( var type in Expr.match ) {
581 Expr.match[ type ] = RegExp( Expr.match[ type ].source + /(?![^\[]*\])(?![^\(]*\))/.source );
584 var makeArray = function(array, results) {
585 array = Array.prototype.slice.call( array );
588 results.push.apply( results, array );
595 // Perform a simple check to determine if the browser is capable of
596 // converting a NodeList to an array using builtin methods.
598 Array.prototype.slice.call( document.documentElement.childNodes );
600 // Provide a fallback method if it does not work
602 makeArray = function(array, results) {
603 var ret = results || [];
605 if ( array instanceof Array ) {
606 Array.prototype.push.apply( ret, array );
608 if ( typeof array.length === "number" ) {
609 for ( var i = 0, l = array.length; i < l; i++ ) {
610 ret.push( array[i] );
613 for ( var i = 0; array[i]; i++ ) {
614 ret.push( array[i] );
623 // Check to see if the browser returns elements by name when
624 // querying by getElementById (and provide a workaround)
626 // We're going to inject a fake input element with a specified name
627 var form = document.createElement("form"),
628 id = "script" + (new Date).getTime();
629 form.innerHTML = "<input name='" + id + "'/>";
631 // Inject it into the root element, check its status, and remove it quickly
632 var root = document.documentElement;
633 root.insertBefore( form, root.firstChild );
635 // The workaround has to do additional checks after a getElementById
636 // Which slows things down for other browsers (hence the branching)
637 if ( !!document.getElementById( id ) ) {
638 Expr.find.ID = function(match, context){
639 if ( context.getElementById ) {
640 var m = context.getElementById(match[1]);
641 return m ? m.id === match[1] || m.getAttributeNode && m.getAttributeNode("id").nodeValue === match[1] ? [m] : undefined : [];
645 Expr.filter.ID = function(elem, match){
646 var node = elem.getAttributeNode && elem.getAttributeNode("id");
647 return elem.nodeType === 1 && node && node.nodeValue === match;
651 root.removeChild( form );
654 // Check to see if the browser returns only elements
655 // when doing getElementsByTagName("*")
657 // Create a fake element
658 var div = document.createElement("div");
659 div.appendChild( document.createComment("") );
661 // Make sure no comments are found
662 if ( div.getElementsByTagName("*").length > 0 ) {
663 Expr.find.TAG = function(match, context){
664 var results = context.getElementsByTagName(match[1]);
666 // Filter out possible comments
667 if ( match[1] === "*" ) {
670 for ( var i = 0; results[i]; i++ ) {
671 if ( results[i].nodeType === 1 ) {
672 tmp.push( results[i] );
684 if ( document.querySelectorAll ) (function(){
685 var oldSizzle = Sizzle;
687 Sizzle = function(query, context, extra, seed){
688 context = context || document;
690 if ( !seed && context.nodeType === 9 ) {
692 return makeArray( context.querySelectorAll(query) );
696 return oldSizzle(query, context, extra, seed);
699 Sizzle.find = oldSizzle.find;
700 Sizzle.filter = oldSizzle.filter;
701 Sizzle.selectors = oldSizzle.selectors;
702 Sizzle.matches = oldSizzle.matches;
705 if ( document.documentElement.getElementsByClassName ) {
706 Expr.order.splice(1, 0, "CLASS");
707 Expr.find.CLASS = function(match, context) {
708 return context.getElementsByClassName(match[1]);
712 function dirNodeCheck( dir, cur, doneName, checkSet, nodeCheck ) {
713 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
714 var elem = checkSet[i];
719 while ( elem && elem.nodeType ) {
720 var done = elem[doneName];
722 match = checkSet[ done ];
726 if ( elem.nodeType === 1 )
729 if ( elem.nodeName === cur ) {
742 function dirCheck( dir, cur, doneName, checkSet, nodeCheck ) {
743 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
744 var elem = checkSet[i];
749 while ( elem && elem.nodeType ) {
750 if ( elem[doneName] ) {
751 match = checkSet[ elem[doneName] ];
755 if ( elem.nodeType === 1 ) {
758 if ( typeof cur !== "string" ) {
759 if ( elem === cur ) {
764 } else if ( Sizzle.filter( cur, [elem] ).length > 0 ) {
778 var contains = document.compareDocumentPosition ? function(a, b){
779 return a.compareDocumentPosition(b) & 16;
781 return a !== b && (a.contains ? a.contains(b) : true);
785 jQuery.find = Sizzle;
786 jQuery.filter = Sizzle.filter;
787 jQuery.expr = Sizzle.selectors;
788 jQuery.expr[":"] = jQuery.expr.filters;
790 Sizzle.selectors.filters.hidden = function(elem){
791 return "hidden" === elem.type ||
792 jQuery.css(elem, "display") === "none" ||
793 jQuery.css(elem, "visibility") === "hidden";
796 Sizzle.selectors.filters.visible = function(elem){
797 return "hidden" !== elem.type &&
798 jQuery.css(elem, "display") !== "none" &&
799 jQuery.css(elem, "visibility") !== "hidden";
802 Sizzle.selectors.filters.animated = function(elem){
803 return jQuery.grep(jQuery.timers, function(fn){
804 return elem === fn.elem;
808 jQuery.multiFilter = function( expr, elems, not ) {
810 expr = ":not(" + expr + ")";
813 return Sizzle.matches(expr, elems);
816 jQuery.dir = function( elem, dir ){
817 var matched = [], cur = elem[dir];
818 while ( cur && cur != document ) {
819 if ( cur.nodeType == 1 )
826 jQuery.nth = function(cur, result, dir, elem){
827 result = result || 1;
830 for ( ; cur; cur = cur[dir] )
831 if ( cur.nodeType == 1 && ++num == result )
837 jQuery.sibling = function(n, elem){
840 for ( ; n; n = n.nextSibling ) {
841 if ( n.nodeType == 1 && n != elem )
850 window.Sizzle = Sizzle;