From: Dave Methvin <dave.methvin@gmail.com>
Date: Thu, 10 Mar 2011 03:38:26 +0000 (-0500)
Subject: Fixes #8456. Make sure parent is not null before crawling into its lap, so mouseenter... 
X-Git-Tag: 1.5.2rc1~7^2
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=2ac4067a639856a6035c3bd00aab132c9714b52d;p=jquery.git

Fixes #8456. Make sure parent is not null before crawling into its lap, so mouseenter is triggered on a mouseover event.
---

diff --git a/src/event.js b/src/event.js
index f7e0a08c0..2620646da 100644
--- a/src/event.js
+++ b/src/event.js
@@ -661,7 +661,7 @@ var withinElement = function( event ) {
 
 		// Chrome does something similar, the parentNode property
 		// can be accessed but is null.
-		if ( parent !== document && !parent.parentNode ) {
+		if ( parent && parent !== document && !parent.parentNode ) {
 			return;
 		}
 		// Traverse up the tree
diff --git a/test/unit/event.js b/test/unit/event.js
index b7b260462..d66aaac9b 100644
--- a/test/unit/event.js
+++ b/test/unit/event.js
@@ -683,6 +683,20 @@ test("hover()", function() {
 	equals( times, 4, "hover handlers fired" );
 });
 
+test("mouseover triggers mouseenter", function() {
+	expect(1);
+	
+	var count = 0,
+		elem = jQuery("<a />");
+	elem.mouseenter(function () {
+	  count++;
+	});
+	elem.trigger('mouseover');
+	equals(count, 1, "make sure mouseover triggers a mouseenter" );
+	
+	elem.remove();
+});
+
 test("trigger() shortcuts", function() {
 	expect(6);