如何衡量mousedown和mouseup之间的毫秒数？ [英] How to measure the milliseconds between mousedown and mouseup?

问题描述

有没有办法测量鼠标按和发布之间的毫秒数？

Is there any way to measure the number of milliseconds between mouse press and release?

推荐答案

您可以创建一个闭包来共享两个变量，一个用于存储开始时间，另一个用于结束时间，然后在mouseup事件中，获得差异：

You could create a closure to share two variables, one to store the start time and other for the end time, then in the mouseup event, get the difference:

(function () {
    var element = document.getElementById('element'),
        start, end;

    element.onmousedown = function () {
      start = +new Date(); // get unix-timestamp in milliseconds
    };


    element.onmouseup = function () {
      end = +new Date();

      var diff = end - start; // time difference in milliseconds
    };

})();

检查此工作示例。

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