简单的答案是没有这样的功能。

The simple answer is that there is no such function.

你最接近的是：

var millisecondsToWait = 500;
setTimeout(function() {
    // Whatever you want to do after the wait
}, millisecondsToWait);

请注意，尤其不想忙等待（例如在一个旋转循环中），因为你的浏览器几乎肯定会在单线程环境中执行你的JavaScript。

Note that you especially don't want to busy-wait (e.g. in a spin loop), since your browser is almost certainly executing your JavaScript in a single-threaded environment.

这里有一些其他的SO问题来处理线程JavaScript：

Here are a couple of other SO questions that deal with threads in JavaScript:

• JavaScript和主题


• 为什么JavaScript不支持多线程？

• JavaScript and Threads
• Why doesn't JavaScript support multithreading?

这个问题也许有用：

• setTimeout - 如何避免使用字符串回调？

• setTimeout - how to avoid using string for callback?