Why is it necessary to set the prototype constructor?

Question

In the section about inheritance in the MDN article Introduction to Object Oriented Javascript, I noticed they set the prototype.constructor:

// correct the          


        

Answer 1

So far confusion is still there.

Following the original example, as you have an existing object student1 as:

var student1 = new Student("Janet", "Applied Physics");

Suppose you don't want to know how student1 is created, you just want another object like it, you can use the constructor property of student1 like:

var student2 = new student1.constructor("Mark", "Object-Oriented JavaScript");

Here it will fail to get the properties from Student if the constructor property is not set. Rather it will create a Person object.