How to get local variable by its name in JS?

Question

Working example with global var:

var example_var = 'global var example';

var x = function(){
    var var_name = 'example_var';
    alert('Global var value is: ' + window[var_name]);
}

How can I do same thing with a local variable? Like this (not working example):

var x = function(){
    var example_var = 'Local var example';
    var var_name = 'example_var';
    alert('Local var value is: ' + window[var_name]);
}

Answer 1

If you have no other way, you can try eval it

var x = function(){
    var example_var = 'Local var example';
    var var_name = 'example_var';
    alert('Local var value is: ' + eval(var_name));
}