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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(){

11
test/unit/selector.js
View file

@ -1,7 +1,7 @@
module("selector");
test("element", function() {
expect(9);
expect(13);
reset();
ok( jQuery("*").size() >= 30, "Select all" );
@ -18,6 +18,13 @@ test("element", function() {
ok( jQuery("#length").length, '&lt;input name="length"&gt; cannot be found under IE, see #945' );
ok( jQuery("#lengthtest input").length, '&lt;input name="length"&gt; cannot be found under IE, see #945' );
// Check for unique-ness and sort order
isSet( jQuery("*"), jQuery("*, *"), "Check for duplicates: *, *" );
isSet( jQuery("p"), jQuery("p, div p"), "Check for duplicates: p, div p" );
t( "Checking sort order", "h2, h1", ["header", "banner", "userAgent"] );
t( "Checking sort order", "p, p a", ["firstp", "simon1", "ap", "google", "groups", "anchor1", "mark", "sndp", "en", "yahoo", "sap", "anchor2", "simon", "first"] );
});
if ( location.protocol != "file:" ) {
@ -333,7 +340,7 @@ test("pseudo (:) selectors", function() {
t( "Form element :text", "#form :text", ["text1", "text2", "hidden2", "name"] );
t( "Form element :radio:checked", "#form :radio:checked", ["radio2"] );
t( "Form element :checkbox:checked", "#form :checkbox:checked", ["check1"] );
t( "Form element :checkbox:checked, :radio:checked", "#form :checkbox:checked, #form :radio:checked", ["check1", "radio2"] );
t( "Form element :radio:checked, :checkbox:checked", "#form :radio:checked, #form :checkbox:checked", ["radio2", "check1"] );
t( "Headers", ":header", ["header", "banner", "userAgent"] );
t( "Has Children - :has()", "p:has(a)", ["firstp","ap","en","sap"] );