javascript：pause setTimeout（）; [英] javascript: pause setTimeout();

问题描述

如果我有一个通过设置的有效超时运行var t = setTimeout（dosomething（），5000），

无论如何暂停和恢复它？

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有没有办法让当前超时剩余时间？

或者我必须在一个变量中，当设置超时时，存储当前时间，然后我们暂停，得到现在和之间的差异？

Is there anyway to pause and resume it?

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Is there any way to get the time remaining on the current timeout?
or do I have to in a variable, when the timeout is set, store the current time, then we we pause, get the difference between now and then?

推荐答案

你可以包装 window.setTimeout 就像这样，我认为这与你在问题中建议的类似：

You could wrap window.setTimeout like this, which I think is similar to what you were suggesting in the question:

function Timer(callback, delay) {
    var timerId, start, remaining = delay;

    this.pause = function() {
        window.clearTimeout(timerId);
        remaining -= new Date() - start;
    };

    this.resume = function() {
        start = new Date();
        window.clearTimeout(timerId);
        timerId = window.setTimeout(callback, remaining);
    };

    this.resume();
}

var timer = new Timer(function() {
    alert("Done!");
}, 1000);

timer.pause();
// Do some stuff...
timer.resume();

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