Object Orientated JavaScript

my_class.js

"use strict";

var MyClass = (function() {
  function MyClass(publicString) {
    this.publicString = publicString;
  };
  var privateString = "I'm a private string that can't be accessed directly";


// ============================================================================
//
// CLASS METHODS
//
// ============================================================================

  MyClass.bar = function() {
    console.log(helpMe());
    return 'bar';
  };


// ============================================================================
//
// INSTANCE METHODS
//
// ============================================================================

  MyClass.prototype.foo = function() {
    console.log(helpMe());
    return 'foo';
  };


  return MyClass;


// ============================================================================
//
// PRIVATE HELPER METHODS
//
// ============================================================================

  function helpMe() {
    console.log(privateString);
    return "I'm a private helper, I can't be accessed directly";
  };

})();

var c = new MyClass('a public string');