Question

I like the module pattern that returns constructors as described in:
http://elegantcode.com/2011/02/15/basic-javascript-part-10-the-module-pattern/

However I am not sure how to inherit from an object that is implemented with this pattern. Suppose I have a parent object implemented thus…

namespace('MINE');  

MINE.parent = (function() { 
    // private funcs and vars here

    // Public API - constructor
    var Parent = function (coords) {
       // ...do constructor stuff here
    };

    // Public API - prototype
    Parent.prototype = {
       constructor: Parent,
       func1:  function ()    { ... },
       func2:  function ()    { ... }
    }

    return Parent;
 }());

How do I define a child object that also uses the module pattern that inherits from parent in such a way that I can selectively override, for example, func2?

Answer 1

MINE.child = (function () {

  var Child = function (coords) {
    Parent.call(this, arguments);    
  }

  Child.prototype = Object.create(Parent.prototype);

  Child.prototype.constructor = Child;
  Child.prototype.func2 = function () { ... };

  return Child;

}());