Widget: Fix _on to use element argument for delegated events. Fixes #8658 - Widget: this._on delegates using instance.widget() instead of passed element

1 files changed, 5 insertions, 3 deletions

diff --git a/ui/jquery.ui.widget.js b/ui/jquery.ui.widget.js
index eea12c471..a6eae6580 100644
--- a/ui/jquery.ui.widget.js
+++ b/ui/jquery.ui.widget.js
@@ -362,17 +362,19 @@ $.Widget.prototype = {
 	},
 
 	_on: function( element, handlers ) {
+		var delegateElement,
+			instance = this;
 		// no element argument, shuffle and use this.element
 		if ( !handlers ) {
 			handlers = element;
 			element = this.element;
+			delegateElement = this.widget();
 		} else {
 			// accept selectors, DOM elements
-			element = $( element );
+			element = delegateElement = $( element );
 			this.bindings = this.bindings.add( element );
 		}
 
-		var instance = this;
 		$.each( handlers, function( event, handler ) {
 			function handlerProxy() {
 				// allow widgets to customize the disabled handling
@@ -396,7 +398,7 @@ $.Widget.prototype = {
 				eventName = match[1] + instance.eventNamespace,
 				selector = match[2];
 			if ( selector ) {
-				instance.widget().delegate( selector, eventName, handlerProxy );
+				delegateElement.delegate( selector, eventName, handlerProxy );
 			} else {
 				element.bind( eventName, handlerProxy );
 			}