WheelEvent deltaZ Property
Example
Return whether the user scrolls in or out (along the z-axis):
function myFunction(event) {
var z = event.deltaZ;
}
Try it Yourself »
Description
The deltaZ property returns a positive value
when scrolling in, and a negative value when scrolling out,
otherwise 0.
Note: Most mouse devices do not have the ability to scroll along the z-axis, and will always return 0.
Note: This property is read-only.
Syntax
event.deltaZ
Technical Details
| Return Value: | A Double, indicating the scrolling direction of the mouse wheel |
|---|
Related Pages
HTML DOM reference: WheelEvent deltaY Property
HTML DOM reference: WheelEvent deltaX Property
Browser Support
event.deltaZ is a DOM Level 4 (2015) feature.
It is supported in all modern browsers:
| Chrome | Edge | Firefox | Safari | Opera |
| Yes | Yes | Yes | Yes | Yes |
event.deltaZ is not supported in Internet Explorer 11 (or earlier).
