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 );
128 Sizzle.matches = function(expr, set){
129 return Sizzle(expr, null, null, set);
132 Sizzle.find = function(expr, context){
139 var later = "", match;
141 // Pseudo-selectors could contain other selectors (like :not)
142 while ( (match = Expr.match.PSEUDO.exec( expr )) ) {
143 var left = RegExp.leftContext;
145 if ( left.substr( left.length - 1 ) !== "\\" ) {
147 expr = expr.replace( Expr.match.PSEUDO, "" );
149 // TODO: Need a better solution, fails: .class\:foo:realfoo(#id)
154 for ( var i = 0, l = Expr.order.length; i < l; i++ ) {
155 var type = Expr.order[i];
157 if ( (match = Expr.match[ type ].exec( expr )) ) {
158 var left = RegExp.leftContext;
160 if ( left.substr( left.length - 1 ) !== "\\" ) {
161 match[1] = (match[1] || "").replace(/\\/g, "");
162 set = Expr.find[ type ]( match, context );
165 expr = expr.replace( Expr.match[ type ], "" );
173 set = context.getElementsByTagName("*");
178 return {set: set, expr: expr};
181 Sizzle.filter = function(expr, set, inplace){
182 var old = expr, result = [], curLoop = set, match;
184 while ( expr && set.length ) {
185 for ( var type in Expr.filter ) {
186 if ( (match = Expr.match[ type ].exec( expr )) != null ) {
187 var anyFound = false, filter = Expr.filter[ type ], goodArray = null;
189 if ( curLoop == result ) {
193 if ( Expr.preFilter[ type ] ) {
194 match = Expr.preFilter[ type ]( match, curLoop );
196 if ( match[0] === true ) {
198 var last = null, elem;
199 for ( var i = 0; (elem = curLoop[i]) !== undefined; i++ ) {
200 if ( elem && last !== elem ) {
201 goodArray.push( elem );
209 var goodPos = 0, found, item;
211 for ( var i = 0; (item = curLoop[i]) !== undefined; i++ ) {
213 if ( goodArray && item != goodArray[goodPos] ) {
217 found = filter( item, match, goodPos, goodArray );
218 if ( inplace && found != null ) {
219 curLoop[i] = found ? curLoop[i] : false;
223 } else if ( found ) {
230 if ( found !== undefined ) {
235 expr = expr.replace( Expr.match[ type ], "" );
247 expr = expr.replace(/\s*,\s*/, "");
249 // Improper expression
251 throw "Syntax error, unrecognized expression: " + expr;
260 var Expr = Sizzle.selectors = {
261 order: [ "ID", "NAME", "TAG" ],
263 ID: /#((?:[\w\u0128-\uFFFF_-]|\\.)+)/,
264 CLASS: /\.((?:[\w\u0128-\uFFFF_-]|\\.)+)/,
265 NAME: /\[name=((?:[\w\u0128-\uFFFF_-]|\\.)+)\]/,
266 ATTR: /\[((?:[\w\u0128-\uFFFF_-]|\\.)+)\s*(?:(\S{0,1}=)\s*(['"]*)(.*?)\3|)\]/,
267 TAG: /^((?:[\w\u0128-\uFFFF\*_-]|\\.)+)/,
268 CHILD: /:(only|nth|last|first)-child\(?(even|odd|[\dn+-]*)\)?/,
269 POS: /:(nth|eq|gt|lt|first|last|even|odd)\(?(\d*)\)?(?:[^-]|$)/,
270 PSEUDO: /:((?:[\w\u0128-\uFFFF_-]|\\.)+)(?:\((['"]*)((?:\([^\)]+\)|[^\2\(\)]*)+)\2\))?/
276 "+": function(checkSet, part){
277 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
278 var elem = checkSet[i];
280 var cur = elem.previousSibling;
281 while ( cur && cur.nodeType !== 1 ) {
282 cur = cur.previousSibling;
284 checkSet[i] = typeof part === "string" ?
290 if ( typeof part === "string" ) {
291 Sizzle.filter( part, checkSet, true );
294 ">": function(checkSet, part){
295 if ( typeof part === "string" && !/\W/.test(part) ) {
296 part = part.toUpperCase();
298 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
299 var elem = checkSet[i];
301 var parent = elem.parentNode;
302 checkSet[i] = parent.nodeName === part ? parent : false;
306 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
307 var elem = checkSet[i];
309 checkSet[i] = typeof part === "string" ?
311 elem.parentNode === part;
315 if ( typeof part === "string" ) {
316 Sizzle.filter( part, checkSet, true );
320 "": function(checkSet, part){
321 var doneName = "done" + (done++), checkFn = dirCheck;
323 if ( !part.match(/\W/) ) {
324 var nodeCheck = part = part.toUpperCase();
325 checkFn = dirNodeCheck;
328 checkFn("parentNode", part, doneName, checkSet, nodeCheck);
330 "~": function(checkSet, part){
331 var doneName = "done" + (done++), checkFn = dirCheck;
333 if ( typeof part === "string" && !part.match(/\W/) ) {
334 var nodeCheck = part = part.toUpperCase();
335 checkFn = dirNodeCheck;
338 checkFn("previousSibling", part, doneName, checkSet, nodeCheck);
342 ID: function(match, context){
343 if ( context.getElementById ) {
344 var m = context.getElementById(match[1]);
348 NAME: function(match, context){
349 return context.getElementsByName(match[1]);
351 TAG: function(match, context){
352 return context.getElementsByTagName(match[1]);
356 CLASS: function(match){
357 return new RegExp( "(?:^|\\s)" + match[1] + "(?:\\s|$)" );
362 TAG: function(match){
363 return match[1].toUpperCase();
365 CHILD: function(match){
366 if ( match[1] == "nth" ) {
367 // parse equations like 'even', 'odd', '5', '2n', '3n+2', '4n-1', '-n+6'
368 var test = /(-?)(\d*)n((?:\+|-)?\d*)/.exec(
369 match[2] == "even" && "2n" || match[2] == "odd" && "2n+1" ||
370 !/\D/.test( match[2] ) && "0n+" + match[2] || match[2]);
372 // calculate the numbers (first)n+(last) including if they are negative
373 match[2] = (test[1] + (test[2] || 1)) - 0;
374 match[3] = test[3] - 0;
377 // TODO: Move to normal caching system
378 match[0] = "done" + (done++);
382 ATTR: function(match){
385 if ( Expr.attrMap[name] ) {
386 match[1] = Expr.attrMap[name];
389 if ( match[2] === "~=" ) {
390 match[4] = " " + match[4] + " ";
395 PSEUDO: function(match){
396 if ( match[1] === "not" ) {
397 match[3] = match[3].split(/\s*,\s*/);
402 POS: function(match){
403 match.unshift( true );
408 enabled: function(elem){
409 return elem.disabled === false && elem.type !== "hidden";
411 disabled: function(elem){
412 return elem.disabled === true;
414 checked: function(elem){
415 return elem.checked === true;
417 selected: function(elem){
418 // Accessing this property makes selected-by-default
419 // options in Safari work properly
420 elem.parentNode.selectedIndex;
421 return elem.selected === true;
423 parent: function(elem){
424 return !!elem.firstChild;
426 empty: function(elem){
427 return !elem.firstChild;
429 has: function(elem, i, match){
430 return !!Sizzle( match[3], elem ).length;
432 header: function(elem){
433 return /h\d/i.test( elem.nodeName );
435 text: function(elem){
436 return "text" === elem.type;
438 radio: function(elem){
439 return "radio" === elem.type;
441 checkbox: function(elem){
442 return "checkbox" === elem.type;
444 file: function(elem){
445 return "file" === elem.type;
447 password: function(elem){
448 return "password" === elem.type;
450 submit: function(elem){
451 return "submit" === elem.type;
453 image: function(elem){
454 return "image" === elem.type;
456 reset: function(elem){
457 return "reset" === elem.type;
459 button: function(elem){
460 return "button" === elem.type || elem.nodeName.toUpperCase() === "BUTTON";
462 input: function(elem){
463 return /input|select|textarea|button/i.test(elem.nodeName);
467 first: function(elem, i){
470 last: function(elem, i, match, array){
471 return i === array.length - 1;
473 even: function(elem, i){
476 odd: function(elem, i){
479 lt: function(elem, i, match){
480 return i < match[3] - 0;
482 gt: function(elem, i, match){
483 return i > match[3] - 0;
485 nth: function(elem, i, match){
486 return match[3] - 0 == i;
488 eq: function(elem, i, match){
489 return match[3] - 0 == i;
493 CHILD: function(elem, match){
494 var type = match[1], parent = elem.parentNode;
496 var doneName = match[0];
498 if ( parent && !parent[ doneName ] ) {
501 for ( var node = parent.firstChild; node; node = node.nextSibling ) {
502 if ( node.nodeType == 1 ) {
503 node.nodeIndex = count++;
507 parent[ doneName ] = count - 1;
510 if ( type == "first" ) {
511 return elem.nodeIndex == 1;
512 } else if ( type == "last" ) {
513 return elem.nodeIndex == parent[ doneName ];
514 } else if ( type == "only" ) {
515 return parent[ doneName ] == 1;
516 } else if ( type == "nth" ) {
517 var add = false, first = match[2], last = match[3];
519 if ( first == 1 && last == 0 ) {
524 if ( elem.nodeIndex == last ) {
527 } else if ( (elem.nodeIndex - last) % first == 0 && (elem.nodeIndex - last) / first >= 0 ) {
534 PSEUDO: function(elem, match, i, array){
535 var name = match[1], filter = Expr.filters[ name ];
538 return filter( elem, i, match, array )
539 } else if ( name === "contains" ) {
540 return (elem.textContent || elem.innerText || "").indexOf(match[3]) >= 0;
541 } else if ( name === "not" ) {
544 for ( var i = 0, l = not.length; i < l; i++ ) {
545 if ( Sizzle.filter(not[i], [elem]).length > 0 ) {
553 ID: function(elem, match){
554 return elem.nodeType === 1 && elem.getAttribute("id") === match;
556 TAG: function(elem, match){
557 return (match === "*" && elem.nodeType === 1) || elem.nodeName === match;
559 CLASS: function(elem, match){
560 return match.test( elem.className );
562 ATTR: function(elem, match){
563 var result = elem[ match[1] ] || elem.getAttribute( match[1] ), value = result + "", type = match[2], check = match[4];
564 return result == null ?
569 value.indexOf(check) >= 0 :
571 (" " + value + " ").indexOf(check) >= 0 :
577 value.indexOf(check) === 0 :
579 value.substr(value.length - check.length) === check :
581 value === check || value.substr(0, check.length + 1) === check + "-" :
584 POS: function(elem, match, i, array){
585 var name = match[2], filter = Expr.setFilters[ name ];
588 return filter( elem, i, match, array );
594 var makeArray = function(array, results) {
595 array = Array.prototype.slice.call( array );
598 results.push.apply( results, array );
605 // Perform a simple check to determine if the browser is capable of
606 // converting a NodeList to an array using builtin methods.
608 Array.prototype.slice.call( document.documentElement.childNodes );
610 // Provide a fallback method if it does not work
612 makeArray = function(array, results) {
613 var ret = results || [];
615 if ( array instanceof Array ) {
616 Array.prototype.push.apply( ret, array );
618 if ( typeof array.length === "number" ) {
619 for ( var i = 0, l = array.length; i < l; i++ ) {
620 ret.push( array[i] );
623 for ( var i = 0; array[i]; i++ ) {
624 ret.push( array[i] );
633 // Check to see if the browser returns elements by name when
634 // querying by getElementById (and provide a workaround)
636 // We're going to inject a fake input element with a specified name
637 var form = document.createElement("form"),
638 id = "script" + (new Date).getTime();
639 form.innerHTML = "<input name='" + id + "'/>";
641 // Inject it into the root element, check its status, and remove it quickly
642 var root = document.documentElement;
643 root.insertBefore( form, root.firstChild );
645 // The workaround has to do additional checks after a getElementById
646 // Which slows things down for other browsers (hence the branching)
647 if ( !!document.getElementById( id ) ) {
648 Expr.find.ID = function(match, context){
649 if ( context.getElementById ) {
650 var m = context.getElementById(match[1]);
651 return m ? m.id === match[1] || m.getAttributeNode && m.getAttributeNode("id").nodeValue === match[1] ? [m] : undefined : [];
655 Expr.filter.ID = function(elem, match){
656 var node = elem.getAttributeNode && elem.getAttributeNode("id");
657 return elem.nodeType === 1 && node && node.nodeValue === match;
661 root.removeChild( form );
664 // Check to see if the browser returns only elements
665 // when doing getElementsByTagName("*")
667 // Create a fake element
668 var div = document.createElement("div");
669 div.appendChild( document.createComment("") );
671 // Make sure no comments are found
672 if ( div.getElementsByTagName("*").length > 0 ) {
673 Expr.find.TAG = function(match, context){
674 var results = context.getElementsByTagName(match[1]);
676 // Filter out possible comments
677 if ( match[1] === "*" ) {
680 for ( var i = 0; results[i]; i++ ) {
681 if ( results[i].nodeType === 1 ) {
682 tmp.push( results[i] );
694 if ( document.querySelectorAll ) (function(){
695 var oldSizzle = Sizzle;
697 Sizzle = function(query, context, extra){
698 context = context || document;
700 if ( context.nodeType === 9 ) {
702 return makeArray( context.querySelectorAll(query) );
706 return oldSizzle(query, context, extra);
709 Sizzle.find = oldSizzle.find;
710 Sizzle.filter = oldSizzle.filter;
711 Sizzle.selectors = oldSizzle.selectors;
714 if ( document.documentElement.getElementsByClassName ) {
715 Expr.order.splice(1, 0, "CLASS");
716 Expr.find.CLASS = function(match, context) {
717 return context.getElementsByClassName(match[1]);
721 function dirNodeCheck( dir, cur, doneName, checkSet, nodeCheck ) {
722 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
723 var elem = checkSet[i];
728 while ( elem && elem.nodeType ) {
729 var done = elem[doneName];
731 match = checkSet[ done ];
735 if ( elem.nodeType === 1 )
738 if ( elem.nodeName === cur ) {
751 function dirCheck( dir, cur, doneName, checkSet, nodeCheck ) {
752 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
753 var elem = checkSet[i];
758 while ( elem && elem.nodeType ) {
759 if ( elem[doneName] ) {
760 match = checkSet[ elem[doneName] ];
764 if ( elem.nodeType === 1 ) {
767 if ( typeof cur !== "string" ) {
768 if ( elem === cur ) {
773 } else if ( Sizzle.filter( cur, [elem] ).length > 0 ) {
787 var contains = document.compareDocumentPosition ? function(a, b){
788 return a.compareDocumentPosition(b) & 16;
790 return a !== b && a.contains(b);
794 jQuery.find = Sizzle;
795 jQuery.filter = Sizzle.filter;
796 jQuery.expr = Sizzle.selectors;
797 jQuery.expr[":"] = jQuery.expr.filters;
799 Sizzle.selectors.filters.hidden = function(elem){
800 return "hidden" === elem.type ||
801 jQuery.css(elem, "display") === "none" ||
802 jQuery.css(elem, "visibility") === "hidden";
805 Sizzle.selectors.filters.visible = function(elem){
806 return "hidden" !== elem.type &&
807 jQuery.css(elem, "display") !== "none" &&
808 jQuery.css(elem, "visibility") !== "hidden";
811 jQuery.multiFilter = function( expr, elems, not ) {
813 return jQuery.multiFilter( ":not(" + expr + ")", elems );
816 var exprs = expr.split(/\s*,\s*/), cur = [];
818 for ( var i = 0; i < exprs.length; i++ ) {
819 cur = jQuery.merge( cur, jQuery.filter( exprs[i], elems ) );
825 jQuery.dir = function( elem, dir ){
826 var matched = [], cur = elem[dir];
827 while ( cur && cur != document ) {
828 if ( cur.nodeType == 1 )
835 jQuery.nth = function(cur, result, dir, elem){
836 result = result || 1;
839 for ( ; cur; cur = cur[dir] )
840 if ( cur.nodeType == 1 && ++num == result )
846 jQuery.sibling = function(n, elem){
849 for ( ; n; n = n.nextSibling ) {
850 if ( n.nodeType == 1 && n != elem )
859 window.Sizzle = Sizzle;