From f7429edfe96d322cdec850f7207efba8125767a6 Mon Sep 17 00:00:00 2001
From: Frederik Elvhage <frederik.elvhage@googlemail.com>
Date: Thu, 24 Jul 2014 15:04:06 +0200
Subject: [PATCH] Widget: Improve performance of cleanData method

Fixes #9546
Closes gh-1291
---
 ui/widget.js | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/ui/widget.js b/ui/widget.js
index b86232b73..edeb7fa6f 100644
--- a/ui/widget.js
+++ b/ui/widget.js
@@ -25,9 +25,16 @@ var widget_uuid = 0,
 
 $.cleanData = (function( orig ) {
 	return function( elems ) {
-		for ( var i = 0, elem; (elem = elems[i]) != null; i++ ) {
+		var events, elem, i;
+		for ( i = 0; (elem = elems[i]) != null; i++ ) {
 			try {
-				$( elem ).triggerHandler( "remove" );
+
+				// Only trigger remove when necessary to save time
+				events = $._data( elem, "events" );
+				if ( events && events.remove ) {
+					$( elem ).triggerHandler( "remove" );
+				}
+
 			// http://bugs.jquery.com/ticket/8235
 			} catch( e ) {}
 		}