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Make sure that elements are returned in document order - and that the results are unique.

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This commit is contained in:
John Resig 2009-02-14 16:59:10 +00:00
parent 848c45ea17
commit e16c7fe0f8
2 changed files with 42 additions and 2 deletions
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33
src/selector.js
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@ -111,6 +111,19 @@ var Sizzle = function(selector, context, results, seed) {
if ( extra ) {
Sizzle( extra, context, results, seed );
if ( sortOrder ) {
hasDuplicate = false;
results.sort(sortOrder);
if ( hasDuplicate ) {
for ( var i = 1; i < results.length; i++ ) {
if ( results[i] === results[i-1] ) {
results.splice(i--, 1);
}
}
}
}
}
return results;
@ -648,6 +661,26 @@ try {
};
}
var sortOrder;
if ( document.documentElement.compareDocumentPosition ) {
sortOrder = function( a, b ) {
var ret = a.compareDocumentPosition(b) & 4 ? -1 : a === b ? 0 : 1;
if ( ret === 0 ) {
hasDuplicate = true;
}
return ret;
};
} else if ( document.documentElement.sourceIndex === 0 ) {
sortOrder = function( a, b ) {
var ret = a.sourceIndex - b.sourceIndex;
if ( ret === 0 ) {
hasDuplicate = true;
}
return ret;
};
}
// Check to see if the browser returns elements by name when
// querying by getElementById (and provide a workaround)
(function(){