我会找出现在几点，弄清楚距离下一个完整小时还有多久，然后等待那么长时间.所以，

I would find out what time it is now, figure out how long it is until the next full hour, then wait that long. So,

function doSomething() {
    var d = new Date(),
        h = new Date(d.getFullYear(), d.getMonth(), d.getDate(), d.getHours() + 1, 0, 0, 0),
        e = h - d;
    if (e > 100) { // some arbitrary time period
        window.setTimeout(doSomething, e);
    }
    // your code
}

检查e >100 只是为了确保您不会在 5 毫秒之类的时间里执行 setTimeout 并陷入疯狂循环.

The check for e > 100 is just to make sure you don't do setTimeout on something like 5 ms and get in a crazy loop.