# Yahoo! UI Library

### Event Utility mouseenter and mouseout Module 2.8.0r4

Yahoo! UI Library > event-mouseenter
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### Module: event-mouseenter

Augments the Event Utility with support for the mouseenter and mouseleave events: A mouseenter event fires the first time the mouse enters an element; a mouseleave event first the first time the mouse leaves an element.
Requires: event

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