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Should improve performance of closest considerably. Benchmark proof in speed/closest.html

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This commit is contained in:
wycats 2010-10-09 21:33:02 -07:00
parent cbf9d874e5
commit 0ca35de311
3 changed files with 62 additions and 13 deletions
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30
src/traversing.js
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@ -8,6 +8,8 @@ var runtil = /Until$/,
isSimple = /^.[^:#\[\.,]*$/,
slice = Array.prototype.slice;
var POS = jQuery.expr.match.POS;
jQuery.fn.extend({
find: function( selector ) {
// Handle "> div" child selectors and pass them to .children()
@ -95,21 +97,27 @@ jQuery.fn.extend({
return ret;
}
var pos = jQuery.expr.match.POS.test( selectors ) ?
var pos = POS.test( selectors ) ?
jQuery( selectors, context || this.context ) : null;
ret = jQuery.map(this.get(),function( cur,i ) {
while ( cur && cur.ownerDocument && cur !== context ) {
if ( pos ? pos.index(cur) > -1 : jQuery(cur).is(selectors) ) {
return cur;
}
var ret = [];
cur = cur.parentNode;
}
for ( var i=0,j=this.length; i<j; i++ ) {
var cur = this[i];
while ( cur ) {
if ( pos ? pos.index(cur) > -1 : jQuery.find.matches(selectors, [cur]).length ) {
ret.push( cur );
break;
} else {
cur = cur.parentNode;
if ( !cur.ownerDocument || cur === context ) {
break;
}
}
}
}
return null;
});
ret = ret.length > 1 ? jQuery.unique(ret) : ret;
return this.pushStack( ret, "closest", selectors );