Categories: event

javascript event wheelDelta

@March 15, 2008, 1:22 a.m.

wheelDelta	Firefox/Netscape/NN n/a IE 5.5(Win) Chrome/Safari/DOM n/a
	Read-only
Returns an integer indicating which direction the user rolled the mouse wheel (for a mouse equipped with a wheel) during an onmousewheel event. A positive value means the user rolled the wheel toward the screen; a negative value means the opposite direction.

Example

if (evt.wheelDelta > 0) { ... }

Value
Integer, typically 120 or -120.

Default
None.

javascript event view