A Deeper Look at Objects in JavaScript | kirupa.com

[erolyil]

Hi again,

@krilnon

The way I read k-man’s diagram is that [[Prototype]] references an object that resembles each newly created Object.

This is the point I am objecting already.

@krilnon

salesman.constructor == person // true // salesman doesn’t has its own ‘constructor’ property, but salesman.prototype which is identical to person.prototype has.

'constructor' in salesman // true
salesman.hasOwnProperty("constructor") // false

When you define an object actually two objects are defined. ‘Person’ and ‘Person.prototype’. When a new instance of an object created with new(Constructor), a single object gets created, for example ‘salesman’. ‘salesman’ has a ‘reference variable’ property called [[Prototype]] pointing to the constructors protoype for example ‘Person.prototype’ who has a contructor reference variable pointing to the constructor function, Person() in that case.