Make sure subclass is a proper subclass not just subclassing the fn methods. Fixes #7979.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/core.js b/src/core.js
index 422b68876..2e0ece1b3 100644
--- a/src/core.js
+++ b/src/core.js
@@ -961,14 +961,16 @@ jQuery.extend({
 		function jQuerySubclass( selector, context ) {
 			return new jQuerySubclass.fn.init( selector, context );
 		}
+		jQuery.extend( true, jQuerySubclass, this );
 		jQuerySubclass.superclass = this;
 		jQuerySubclass.fn = jQuerySubclass.prototype = this();
 		jQuerySubclass.fn.constructor = jQuerySubclass;
 		jQuerySubclass.subclass = this.subclass;
 		jQuerySubclass.fn.init = function init( selector, context ) {
-			if (context && context instanceof jQuery && !(context instanceof jQuerySubclass)){
+			if ( context && context instanceof jQuery && !(context instanceof jQuerySubclass) ) {
 				context = jQuerySubclass(context);
 			}
+
 			return jQuery.fn.init.call( this, selector, context, rootjQuerySubclass );
 		};
 		jQuerySubclass.fn.init.prototype = jQuerySubclass.fn;