Javascript equivalent of Python's locals()?

Question

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?

Answer 1

• locals() - No.

• globals() - Yes.

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

globals()["foo"] 

is the same as:

window["foo"] 

Answer 2

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]();