Optimizing isXMLDoc.

[jquery.git] / src / core.js

diff --git a/src/core.js b/src/core.js
index 88c0437..b105c4c 100644 (file)
--- a/src/core.js
+++ b/src/core.js
@@ -251,10 +251,15 @@ jQuery.extend = jQuery.fn.extend = function() {
                                if ( deep && copy && typeof copy === "object" && !copy.nodeType ) {
                                        var clone;
 
-                                       if( src ) clone = src;
-                                       else if( jQuery.isArray(copy) ) clone = [ ];
-                                       else if( jQuery.isObject(copy) ) clone = { };
-                                       else clone = copy;
+                                       if ( src ) {
+                                               clone = src;
+                                       } else if ( jQuery.isArray(copy) ) {
+                                               clone = [];
+                                       } else if ( jQuery.isObject(copy) ) {
+                                               clone = {};
+                                       } else {
+                                               clone = copy;
+                                       }
 
                                        // Never move original objects, clone them
                                        target[ name ] = jQuery.extend( deep, clone, copy );
@@ -298,15 +303,15 @@ jQuery.extend({
        },
 
        isEmptyObject: function( obj ) {
-               for(var name in obj)
+               for ( var name in obj ) {
                        return false;
+               }
                return true;
        },
 
        // check if an element is in a (or is an) XML document
        isXMLDoc: function( elem ) {
-               return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||
-                       !!elem.ownerDocument && elem.ownerDocument.documentElement.nodeName !== "HTML";
+               return (elem.ownerDocument || elem).documentElement.nodeName !== "HTML";
        },
 
        // Evalulates a script in a global context
@@ -318,6 +323,7 @@ jQuery.extend({
                                script = document.createElement("script");
 
                        script.type = "text/javascript";
+
                        if ( jQuery.support.scriptEval ) {
                                script.appendChild( document.createTextNode( data ) );
                        } else {