What is the correct way to create classes inside objects in javascript?

Question

JavaScript

Hi all. I want to understand how to correctly implement the similarity of OOP in JavaScript. For example, I want to create an object like this:
var man = new Earth.Man(prop1, prop2);
How can I create a constructor inside the Earth object (if I understand this entry correctly)?

Answer 1

implement a kind of OOP in JavaScript

Where in the abbreviation "OOP" do you see the word "class"?)
What for? "namespaces"? This is not needed if there are modules.
any function can be used as a constructor.

Answer 2

In js, the same function is both a class and a constructor. Check out:
https://learn.javascript.ru/classes

Answer 3

Better instead of constructors built into the main class of subordinate objects (if their logic is really subordinate to the main class, and not just using it as a namespace) use factories in the style:
var man = Earth.createMan(prop1, prop2);

Answer 4

class NAME extends SuperName {
    constructor(params){
      super();
      /// ....
     }
    methodName(params){ 
     ////.....
    }
}

Naturally, you need to understand that this will not work everywhere.