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.
Obsolete Initial definition.

Browser compatibility

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See also