是否需要在窗口对象前加上 setTimeout 和 setInterval? [英] Is there a need to prepend setTimeout and setInterval with window object?

问题描述

在 Mozilla 文档中，有一些例子用 window. 写在定时器函数前面，有些没有:

In the Mozilla documentation, there are some examples written with window. in front of the timer functions and some without:

function delayedAlert() {
  timeoutID = window.setTimeout(slowAlert, 2000);
}...

setTimeout(myArray.myMethod, 1000);...

window.setInterval = function (vCallback, nDelay...

我一直在写我的代码，没有前面的 window. 到目前为止没有任何问题.我想知道是否有任何必要的情况.

I have been writing my code without window. in front without any problem so far. I want to find out if there is any situation when it would be necessary.

推荐答案

If ..

1. 在给定名称的范围内没有其他标识符(x 或 window)，并且；
2. 没有解析给定名称(x 或 window)的 with 绑定，并且；
3. 给定的名称 (x) 是全局范围 (window) 中的一个属性

1. There is no other identifier in scope with the given name (x or window), and;
2. There is no with binding that resolves the given name (x or window), and;
3. The given name (x) is a property in the global scope (window)

.. 那么 window.x 和 x 是等价的.

.. then window.x and x are equivalent.

对于标准规定的全局属性/函数(必须存在于健全的网络浏览器环境的全局范围内)，我不包括window.我也注意不要隐藏这些名字.

For standards-mandated global properties/functions (which must exist in the global scope of a sane web-browser environment), I do not include window. I also take care not to shadow such names.

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