Brought back the compareDocumentPosition code. While it is redundant in Firefox it...

[jquery.git] / src / selector.js

diff --git a/src/selector.js b/src/selector.js
index c97ba61..6538d97 100644 (file)
--- a/src/selector.js
+++ b/src/selector.js
@@ -684,7 +684,15 @@ try {
 
 var sortOrder;
 
-if ( Array.prototype.indexOf ) {
+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 ( Array.prototype.indexOf ) {
        var indexOf = Array.prototype.indexOf,
                allSort = document.getElementsByTagName("*");
 
@@ -695,7 +703,7 @@ if ( Array.prototype.indexOf ) {
                }
                return ret;
        };
-} else if ( document.documentElement.sourceIndex === 1 ) {
+} else if ( "sourceIndex" in document.documentElement ) {
        sortOrder = function( a, b ) {
                var ret = a.sourceIndex - b.sourceIndex;
                if ( ret === 0 ) {