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MouseEvent.movementX

The MouseEvent.movementX read-only property provides the shift in the X coordinate of the mouse pointer between that event and the previous mousemove event. In other words, the value of that property is computed that way : currentEvent.movementX = currentEvent.screenX - previousEvent.screenX.

Syntax

var xShift = instanceOfMouseEvent.movementX

Return value

A number

Specifications

Specification	Status	Comment
Pointer Lock The definition of 'MouseEvent.movementX' in that specification.	Candidate Recommendation	Initial definition

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	37 37 22 — 37 Prefixed Prefixed Requires the vendor prefix: webkit	Yes	41 41 1 — 41 Prefixed Prefixed Requires the vendor prefix: moz	No	?	No

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	37	37 37 ? — 37 Prefixed Prefixed Requires the vendor prefix: webkit	Yes	41 41 4 — 41 Prefixed Prefixed Requires the vendor prefix: moz	?	No	?

MouseEvent.movementX

Syntax

Return value

Specifications

Browser compatibilityUpdate compatibility data on GitHub

See also