This document discusses JavaScript object types and prototypes. It shows that a new object A created with new A() has its type set to Object and its constructor set to the A function. The __proto__ property of A links to A.prototype, while the __proto__ property of A.prototype links back to Function.prototype and ultimately to Object.prototype.

1. new A()
Object
type
Function
Type
A
prototype __proto__
constructor __proto__
Object.prototype
A
Function.prototype
ObjA
__proto__
A.prototype