Object-Oriented JavaScript

object()

Based on the idea that objects inherit from objects, Douglas Crockford suggests the use of an object() function that accepts an object and returns a new one that has the parent as a prototype.

function object(o) {
  function F() {}
  F.prototype = o;
  return new F();
}

If you need access to an uber property, you can modify the object() function like so:

function object(o) {
  var n;
  function F() {}
  F.prototype = o;
  n = new F();
  n.uber = o;
  return n;
}

Using this function will be the same as the extendCopy(): you basically take an object such as twoDee, create a new object from it and then proceed to augmenting the new object.

var triangle = object(twoDee); triangle.name = 'Triangle'; triangle.getArea = function(){return this.side * this.height / ...