does javascript's this object refer to newly created object in the way i think

Question

So, when we create constructor function for creating new object the new keyword does 3 things I\'am going to explain it but please correct me if I\'am wrong i want to be sur

Answer 1

In this example, during constructor invocation, obj1 is undefined. Value is assigned to obj1 variable after ObjectCreate function returns.

You can check yourself:

function ObjectCreate(){
    this.a = "a";
    this.b = "b";

    alert(obj1); // yields "undefined"
    ObjectCreate.prototype.show = function(){
        alert(this.a+" "+this.b);
    }
}

var obj1 = new ObjectCreate(); // note "var"