List variables created in anonymous function

Question

If I have some Javascript code like the following...

(function(){
    var a = 'valueA';
    var b = 'valueB';
    var c = 'valueC';

    //Create a loop that prints the name of all variables created above
    for(var x in ?????){
        console.log(x);
    }
})();

How do I print out a list of the variables that have been declared and assigned inside the anonymous function.

Answer 1

As mentioned above in a comment, it is not possible, as explained in this link Javascript Reflection