gistfile1.js

function Human(){
  var that = this;
  var name="John Doe";
  that.getName=function(){return name;}
  that.setName=function(value){name=value;}
  return that;
}

function Man(){
	
  var that = this.prototype = new Human();
  this.prototype.constructor = Man;
	
  var nickName = "Johnny";
  that.getNickName=function(){return nickName;}
  that.setNickName=function(value){nickName =value;}
  
  that.toString = function(){return "Hello i am "+that.getName()+" aka "+nickName;}
  
  return that;
}

var bob = new Man(); bob.setName("Bob"); bob.setNickName("Bobby");
var bill = new Man(); bill.setName("Bill"); bill.setNickName("Billy");

console.log(bob.toString());
console.log(bill.toString());

Human.prototype.helloWorld = function(){return "Hello World by "+ this.getName();}

console.log(bob.helloWorld());
console.log(bill.helloWorld());

console.log(bob);
console.log(bill);

function SuperHeroe(){
	var that = this.prototype = new Man();
	this.prototype.constructor = SuperHeroe;
	var power = "?";
	that.getPower = function(){return power};
	that.setPower = function(value){power = value;}
	return that;
}

var clarkkent = new SuperHeroe();
clarkkent.setName("Clark Kent");
clarkkent.setNickName("Smallville");
clarkkent.setPower("flying");
var peterparker = new SuperHeroe();
peterparker.setName("Peter Parker");
peterparker.setNickName("Pete");
peterparker.setPower("climbing");

console.log(clarkkent.toString()+" "+clarkkent.getPower());
console.log(peterparker.toString()+" "+peterparker.getPower());
console.log(clarkkent.helloWorld());
console.log(peterparker.helloWorld());

console.log(clarkkent);
console.log(peterparker);

Human.prototype.ditBonjour = function(){return "Salut à tous par "+ this.getName();}

console.log(clarkkent.ditBonjour());
console.log(peterparker.ditBonjour());
console.log(bob.ditBonjour());
console.log(bill.ditBonjour());