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

Browser compatibilityUpdate compatibility data on GitHub

See also

• wheel
• WheelEvent