- From: Magnus Kristiansen <magnusrk+whatwg@pvv.org>
- Date: Thu, 15 Mar 2007 01:30:13 +0100
Mouseover/out events will trigger when elements contained inside the EventTarget are hovered, and then bubble up. This is contrary to the most obvious interpretation, as you are still inside (over) the targeted element. IE supports two events, mouseenter[1] and mouseleave[2], which solve this problem by not bubbling. It is possible to work around the problem by using target/relatedTarget and walking up the DOM tree. However, this requires extra code for every event handler. Besides, these events were often not meant to be generated in the first place, by the intent of the author. I have no statistics for how often mouseover/out are used with and without intent of bubbling, but the anecdotal evidence from my own experience has never found me wanting it. I suggest these two events be added to the web applications spec. [1] http://msdn.microsoft.com/workshop/author/dhtml/reference/events/onmouseenter.asp [2] http://msdn.microsoft.com/workshop/author/dhtml/reference/events/onmouseleave.asp -- Magnus Kristiansen "Don't worry; the Universe IS out to get you."
Received on Wednesday, 14 March 2007 17:30:13 UTC