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WheelEvent.deltaY

The WheelEvent.deltaY read-only property is a double representing the vertical scroll amount in the WheelEvent.deltaMode unit.

Syntax

var dY = event.deltaY;

Example

var syntheticEvent = new WheelEvent("syntheticWheel", {"deltaY": 4, "deltaMode": 0});

console.log(syntheticEvent.deltaY);

Specifications

Specification Status Comment
Document Object Model (DOM) Level 3 Events Specification
The definition of 'WheelEvent.deltaY' in that specification.
Working Draft Initial definition.

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 31 (Yes) 17.0 (17.0) 9.0 [1] 18 9.0
Feature Android Edge Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support (Yes) (Yes) 17.0 (17.0) ? (Yes) No support

[1] IE9 supports an old draft of the spec where this value was a long instead of a double.

See also

Document Tags and Contributors

 Contributors to this page: libbymc, IceCreamYou, teoli
 Last updated by: libbymc,