WheelEvent deltaX Property

DOM Events WheelEvent

Definition and Usage

The deltaX property returns a positive value when scrolling to the right, a negative value when scrolling to the left, and 0 otherwise.

Note:Most mouse devices do not have the ability to scroll left and right, and always return 0.

Note:This property is read-only.

Example

Return whether the user is scrolling to the left or right:

function myFunction(event) {
  var x = event.deltaX;
}

Try it yourself

Grammar

event.deltaX

Technical Details

Return Value: A double type value representing the scrolling direction of the mouse wheel.

Browser Support

Property Chrome IE Firefox Safari Opera
deltaX 31 Supported 17 Not Supported 18

Related Pages

HTML DOM Reference Manual:WheelEvent deltaY Property

DOM Events WheelEvent