jQuery.extend(true, Object, Object) copies objects with length keys correctly

[jquery.git] / src / core.js

diff --git a/src/core.js b/src/core.js
index 1721bda..6f8d40f 100644 (file)
--- a/src/core.js
+++ b/src/core.js
@@ -245,7 +245,7 @@ jQuery.extend = jQuery.fn.extend = function() {
                                if ( deep && copy && typeof copy === "object" && !copy.nodeType ) {
                                        target[ name ] = jQuery.extend( deep,
                                                // Never move original objects, clone them
-                                               src || ( copy.length != null ? [ ] : { } ), copy );
+                                               src || ( jQuery.isArray(copy) ? [ ] : { } ), copy );
 
                                // Don't bring in undefined values
                                } else if ( copy !== undefined ) {