When an object is created, a special property is assigned to it behind the scenes-the constructor property. It contains a reference to the constructor function used to create this object.
Continuing from the previous example:
h2.constructor Hero(name)
The constructor property contains a reference to a function. You can call this function to produce a new object.
var h3 = new h2.constructor('Rafaello');
h3.name;
"Rafaello"If an object was created using the object literal notation(), its constructor is the built-in Object() constructor function.
var o = {};
o.constructor;
Object()
typeof o.constructor;
"function"
