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Part of the mo. lesson in the Jun 14 Issue of Prestwood eMag
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JavaScript Event Handler

The JavaScript event handler contains events centered around the Document Object Model (DOM). Common events include onMouseOver and onMouseOut, onFocus and onBlur, onClick and onDblClick, onChange and onSelect, onLoad and onUnload.

For example, onMouseOver and onMouseOut are frequently used with websites to change an image when your mouse moves over it. The onClick event is used to trigger code upon a mouse click.


In the following example, we use a standard image tag set to an image, change it on mouse over, then set it back on mouse out.

<img id="Image1" src="i_search.gif"
 onmouseover="document.images['Image1'].src='i_coat.gif';"
 onmouseout="document.images['Image1'].src='i_search.gif';">

More Info

Definition:  Event Handler
Article:  JavaScript Event Model

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Code Contributed By Mike Prestwood:

Mike Prestwood is a drummer, an author, and creator of the PrestwoodBoards online community. He is the President & CEO of Prestwood IT Solutions. Prestwood IT provides Coding, Website, and Computer Tech services. Mike has authored 6 computer books and over 1,200 articles. As a drummer, he maintains play-drums.com and has authored 3 drum books. If you have a project you wish to discuss with Mike, you can send him a private message through his PrestwoodBoards home page or call him 9AM to 4PM PST at 916-726-5675 x205.

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