Sharing between Objects

object.create.js

var Vehicle = {
  describe: function () {
    return `This ${this.type} is the ${this.make} ${this.model}.`;
  }
}

var Car = Object.create(Vehicle, {
  type: {value: 'Car', writable: true}
});

var Holden = Object.create(Car, {
  make: {value: 'Holden', writable: true}
});

var Commodore = Object.create(Holden, {
  model: {value: 'Commodore', writable: true}
});

console.log(Commodore.describe());
// "This Car is the Holden Commodore."

prototypes.js

var Vehicle = {
  describe: function () {
    return `This ${this.type} is the ${this.make} ${this.model}.`;
  }
}
var Car = {
  __proto__: Vehicle,
  type: 'Car',
}
var Holden = {
  __proto__: Car,
  make: 'Holden',
}
var Commodore = {
  __proto__: Holden,
  model: 'Commodore', 
}
console.log(Commodore.describe());
// "This Car is the Holden Commodore."