WheelEvent.deltaX

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

Syntax

var dX = event.deltaX;

Example

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

console.log(syntheticEvent.deltaX);

Specifications

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

Browser compatibility

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

See also

• wheel
• WheelEvent