Parasitic inheritance and constructors without the new keyword in JavaScript.

gistfile1.js

var ns= {};

ns.Object = function () {
  
  var that = {};
  
  that.toString =  function () {
    
    return 'I am an Object!!';
  }
  
  return that; //return an object with a method called toString()
  
  
}

ns.UselessObject = function() {
 
 var that = ns.Object();  //gets the return value of calling the ns,Object function.
  
  that.toString = function () {
    
    return 'I am useless!'
  }
  
  return that;
}