Confusing JavaScript statement: “var x = new this();”

Question

I thought I understood the concept of the JavaScript prototype object, as well as [[proto]] until I saw a few posts regarding class inheritance.

Firstly, \"JavaScript OO

Answer 1

In a javascript static function, you can call new this() like so,

var Class = function(){}; // constructor
Class.foo = function(){return this;} // will return the Class function which is also an object

Therefore,

Class.foo = function(){ return new this();} // Will invoke the global Class func as a constructor

The moral of the story is, not to forget functions are just like any other objects when you are not calling them.