This is a very old problem, but I cannot seem to get my head around the other solutions presented here.

I have an object

function ObjA() {
    var a = 1;
    this.methodA = function() {
        alert(a);
    }
}

which is instantiated like

var myObjA = new ObjA();

Later on, I assign my methodA as a handler function in an external Javascript Framework, which invokes it using the apply(...) method.

When the external framework executes my methodA, this belongs to the framework function invoking my method.

Since I cannot change how my method is called, how do I regain access to the private variable a?

My research tells me, that closures might be what I'm looking for.