From: John Resig <jeresig@gmail.com>
Date: Mon, 14 Jan 2008 18:46:44 +0000 (+0000)
Subject: Added a fix for bug #2140. Opera doesn't like concating null or undefined values.
X-Git-Url: http://git.asbjorn.biz/?a=commitdiff_plain;h=709df933049ccce53d0b6bb510ad9c39fd6304fe;p=jquery.git

Added a fix for bug #2140. Opera doesn't like concating null or undefined values.
---

diff --git a/src/event.js b/src/event.js
index 89391d5..3e0a885 100644
--- a/src/event.js
+++ b/src/event.js
@@ -207,7 +207,7 @@ jQuery.event = {
 			// Handle triggering of extra function
 			if ( extra && jQuery.isFunction( extra ) ) {
 				// call the extra function and tack the current return value on the end for possible inspection
-				ret = extra.apply( elem, data.concat( val ) );
+				ret = extra.apply( elem, val == null ? data : data.concat( val ) );
 				// if anything is returned, give it precedence and have it overwrite the previous value
 				if (ret !== undefined)
 					val = ret;