Inheritance based on combination

combination.js

/**
 * Combination inheritance. As the name says, we combine the two ways.
 * 1. We have two copies of the superclass properties. One copied from the super
 * class constructor. The other we copied from the prototype.
 */
function superDaddy(name) {
  this.name = name;
  this.dogs = ['teddy', 'cookie', 'variable'];
}

superDaddy.prototype.sayHello = function() {
  console.log('Hello');
};

function superSon(name, age) {
  superDaddy.call(this, name);
  this.age = age;
}

superSon.prototype = new superDaddy();
superSon.prototype.constructor = superSon;

superSon.prototype.sayGoodBye = function() {
  console.log(this.name + ' :Bye bye');
};