Create Prototypes with Inheritance Chains

inheritanceChains.js

'use strict';

function Animal(voice) {
  this.voice = voice || "grunt"
}

Animal.prototype.speak = function() {
  display(this.voice);
}

function Cat(name, color) {
  Animal.call(this, 'Meow')
  this.name = name
  this.color = color
}

Cat.prototype = Object.create(Animal.prototype)
Cat.prototype.constructor = Cat

var fluffy = new Cat("Fluffy", "White")
fluffy.speak();
console.log(fluffy.__proto__)