相当于Python的locals()的Javascript吗? [英] Javascript equivalent of Python's locals()?

问题描述

在Python中，可以使用内置函数locals()和globals()获取当前范围内所有局部变量和全局变量的字典.是否有一些等效的方式在Javascript中执行此操作?例如，我想执行以下操作:

In Python one can get a dictionary of all local and global variables in the current scope with the built-in functions locals() and globals(). Is there some equivalent way of doing this in Javascript? For instance, I would like to do something like the following:

var foo = function(){ alert('foo'); };
var bar = function(){ alert('bar'); };

var s = 'foo';
locals()[s](); // alerts 'foo'

这完全有可能吗?还是应该只使用本地对象进行查找?

Is this at all possible, or should I just be using a local object for the lookup?

推荐答案

• locals()-否

  • locals() - No.

    globals()-是.

    globals() - Yes.

    window是对全局范围的引用，例如python中的globals().

    window is a reference to the global scope, like globals() in python.

    globals()["foo"]
    

    与以下相同:

    window["foo"]
    

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