X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fcore.js;h=74b9fee3992ffa0eee504127684af3ae12bc764f;hb=190812c3be99bde536d373b6b6ab65cfe053a532;hp=1721bdacf7bb46136735d4b89392e65b251aacb8;hpb=e532dfe5228217f55a33122a4438fd70522dbb4b;p=jquery.git

diff --git a/src/core.js b/src/core.js
index 1721bda..74b9fee 100644
--- a/src/core.js
+++ b/src/core.js
@@ -243,9 +243,15 @@ jQuery.extend = jQuery.fn.extend = function() {
 
 				// Recurse if we're merging object values
 				if ( deep && copy && typeof copy === "object" && !copy.nodeType ) {
-					target[ name ] = jQuery.extend( deep,
-						// Never move original objects, clone them
-						src || ( copy.length != null ? [ ] : { } ), copy );
+					var clone;
+
+					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 );
 
 				// Don't bring in undefined values
 				} else if ( copy !== undefined ) {
@@ -281,6 +287,16 @@ jQuery.extend({
 		return toString.call(obj) === "[object Array]";
 	},
 
+	isObject: function( obj ) {
+		return this.constructor.call(obj) === Object;
+	},
+
+	isEmptyObject: function( obj ) {
+		var name = "";
+		for(name in obj) break;
+		return !name;
+	},
+
 	// check if an element is in a (or is an) XML document
 	isXMLDoc: function( elem ) {
 		return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||