I'm curious why IE and chrome don't fire a mouseover event. See this JSFiddle: http://jsfiddle.net/yT6Y5/72/ (Works perfectly in Firefox.)
How can I get IE and Chrome to fire a mouseover event?
回答1:
The problem is that browsers render dropdowns differently. Chrome is rendering it not as an HTML component but as a native GUI one. That can't have hover handlers associated to it from JS.
If you want to make sure it works on all browsers either don't use a dropdown or get a script to create a dropdown that uses HTML elements
回答2:
It seems, no events are actually fired when you hover over an option in IE & chrome,