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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 compatibility
| Feature | Firefox (Gecko) | Chrome | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support |
22.0 webkit |
No support | ? | No support |
| Feature | Firefox Mobile (Gecko) | Android | Android Webview | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android |
|---|---|---|---|---|---|---|---|
| Basic support | 1.0 (1.0) moz 41.0 (41) |
? | ? | No support | ? | No support | (Yes) webkit 37.0 unprefixed |