[Webkit-unassigned] [Bug 18930] mouseenter and mouseleave events not supported

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=18930





--- Comment #4 from Neal Kanodia <nkanodiagoog at gmail.com>  2011-01-05 12:42:04 PST ---
Currently, it's slow, error-prone, and requires extra bytes to implement standard idioms (e.g, a context menu).  mouseenter/mouseleave mirror CSS :hover.

Quirks mode has a good discussion of how the events work, and the boilerplate needed to test an onmouse[over/out] event to see if the mouse actually entered/left:

http://www.quirksmode.org/js/events_mouse.html
http://www.quirksmode.org/dom/events/mouseover.html

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