每 60 秒调用一次函数 [英] Calling a function every 60 seconds

问题描述

使用 setTimeout() 可以在指定的时间启动一个函数:

Using setTimeout() it is possible to launch a function at a specified time:

setTimeout(function, 60000);

但是如果我想多次启动该功能怎么办?每次经过一个时间间隔，我想执行该函数(假设每 60 秒一次).

But what if I would like to launch the function multiple times? Every time a time interval passes, I would like to execute the function (every 60 seconds, let's say).

推荐答案

如果您不关心 timer 中的代码是否可能比您的间隔时间更长，请使用 setInterval():

If you don't care if the code within the timer may take longer than your interval, use setInterval():

setInterval(function, delay)

这会一遍又一遍地触发作为第一个参数传入的函数.

That fires the function passed in as first parameter over and over.

更好的方法是，将 setTimeout 与 自执行匿名 函数一起使用:

A better approach is, to use setTimeout along with a self-executing anonymous function:

(function(){
    // do some stuff
    setTimeout(arguments.callee, 60000);
})();

这保证，在您的代码执行之前不会进行下一次调用.我在这个例子中使用了 arguments.callee 作为函数引用.这是给函数一个名称并在 setTimeout 内调用它的更好方法，因为 arguments.callee 在 ecmascript 5 中已被弃用.

that guarantees, that the next call is not made before your code was executed. I used arguments.callee in this example as function reference. It's a better way to give the function a name and call that within setTimeout because arguments.callee is deprecated in ecmascript 5.

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