Prototypal inheritance

var vehicle = {
  getModel: function () {
    console.log( "The model of this vehicle is.." + this.model );
  }
};
 
var car = Object.create(vehicle, {
 
  "id": {
    value: MY_GLOBAL.nextId(),
    // writable:false, configurable:false by default
    enumerable: true
  },
 
  "model": {
    value: "Ford",
    enumerable: true
  }
 
});

var model = car.getModel()
var id = car.id 

// Old School
var create = (function () {
 
    function F() {}
 
    return function ( proto ) {
        F.prototype = proto;
        return new F();
    };
})();

var childObject = create(parentObject)

// New School
var childObject = Object.create(parentObject)

// Adding a property to a object using Object.defineProperty
Object.defineProperty( childObject, 'propertyName', {
  value: 3,
  enumerable: false, // No puede recorrerse con for.. in, tampoco sale en Object.keys
  writable: false,
  configurable: false
});
 
ob.c; // => 3
 
Object.getOwnPropertyDescriptor( ob, 'c' ); 
// => {value: 3, enumerable: false, writable: false, configurable: false}

Object.assign({}, obj1, obj2) // Clona o fusiona solo las propiedades enumerables