JavaScript Reference/Javascript Properties/wheelDelta
"wheelDelta" Example
<source lang="javascript">
<html> <body>
Move mouse wheel on top of the image
<img id="yourimage"
src="http://www.wbex.ru/style/logo.png" onmousewheel="alert("Wheel Delta: " + event.wheelDelta);">
</body> </html>
</source>
"wheelDelta" is applied to
<source lang="javascript">
+----------------+--------------------------------------------------------------+ | Applied_To |event | +----------------+--------------------------------------------------------------+
</source>
"wheelDelta" Syntax and Note
<source lang="javascript">
Note: Read-only property. Returns a value of
120 if the mouse wheel is rotated up -120 if it is rotated down.
Syntax:
window.event.wheelDelta
</source>
