Inheritance

main.js

  // Inheritance, rent-a-constructor versus prototype based inheritance.
  function Parent() {
    this.list = ['work', 'friends'];
  }
  var parent = new Parent();

  // Events inherits from a parent object by referencing properties
  function Events() {
    Events.prototype = parent; // or new Parent() if instance is not available
  }
  var event = new Events();

  // Board inherits from a parent object by renting constructor
  function Board() {
    Parent.call(this);
  }
  var board = new Board();

  console.log(parent.hasOwnProperty('list')); // true
  console.log(event.hasOwnProperty('list')); // false
  console.log(board.hasOwnProperty('list')); // true

  board.list.push('wife');
//  event.list.push('hobby'); // Throws TypeError
  console.log(parent.list); // ["work", "friends"]
  console.log(board.list); // ["work", "friends", "wife"]