Question

How would I access a parents functions “var” variables in the following scenario (I can only edit the definition of the reset function):

_.bind(function(){
    var foo = 5;

    var reset = function(){
        foo = 6;  //this changes foo,
        bar = 7;  //**I want this to add another "var", so I don't pollute global scope
    }
    reset();
    console.log(foo); //6
    console.log(bar); //7
}, window);

Answer 1

Sorry, but you can’t.

The only way you can access namespaces is the with statement.

For example, if you were able to re-write the whole thing, it could be done like this:

_.bind(function(){
    var parentNamespace = {
        foo: 5,
    };

    with (parentNamespace) {
        var reset = function(){
            foo = 6;  //this changes foo,
            parentNamespace.bar = 7;  //**I want this to add another "var", so I don't pollute global scope
        }
        reset();
        console.log(foo); //6
        console.log(bar); //7
    }
}, window);

But this is most likely almost certainly a bad idea.