From 7babc7f20393acb44d4fced34fe86fde65f893a0 Mon Sep 17 00:00:00 2001
From: Rick Waldron <waldron.rick@gmail.com>
Date: Thu, 22 Sep 2011 11:07:16 -0400
Subject: [PATCH] Cache reference to propHook lookup and result

---
 src/event.js | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/event.js b/src/event.js
index b9da01832..a9bf19706 100644
--- a/src/event.js
+++ b/src/event.js
@@ -484,8 +484,11 @@ jQuery.event = {
 
 		// store a copy of the original event object
 		// and "clone" to set read-only properties
-		var originalEvent = event;
+		var originalEvent = event,
+		propHook;
+
 		event = jQuery.Event( originalEvent );
+		propHook = jQuery.event.propHooks[ event.type ];
 
 		for ( var i = this.props.length, prop; i; ) {
 			prop = this.props[ --i ];
@@ -510,8 +513,8 @@ jQuery.event = {
 			event.relatedTarget = event.fromElement === event.target ? event.toElement : event.fromElement;
 		}
 
-		if ( jQuery.event.propHooks[ event.type ] ) {
-			event = jQuery.event.propHooks[ event.type ]( event, originalEvent );
+		if ( propHook ) {
+			event = propHook( event, originalEvent );
 		}
 
 		return event;