MouseEvent.movementX

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

MouseEvent.movementX 是只读属性，它提供了当前事件和上一个mousemove事件之间鼠标在水平方向上的移动值。换句话说，这个值是这样计算的 : currentEvent.movementX = currentEvent.screenX - previousEvent.screenX.

语法

var xShift = instanceOfMouseEvent.movementX

返回值

一个数字

规范

Specification
Pointer Lock 2.0
# dom-mouseevent-movementx

浏览器兼容性

BCD tables only load in the browser

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