What does “this” refer to

Question

what is the this (inside inner functions) referring to in the following code context? Does it point to TimeSpan?

var TimeSpan = function (da         


        

Answer 1

this refers to the current object, in this case the function you are inside of. Since everything in JavaScript is an object you can modify the attributes of a function object using the this keyword:

var f = function() {
    this.key = "someValue";
}

console.log(f.key); // prints "someValue"

So in this case this should point to the function at the deepest scope level, and not TimeSpan.