Test closure

closure.js

(function () {

  var myObject = (function () {

    var privateMember = 0;

    // Return public methods
    return {
      init: function () {
      },

      getSum: function (add) {
        return (privateMember + add);
      },

      setPrivateMember: function (newPrivateMember) {
        privateMember = newPrivateMember;
      }

    };

  }());

  myObject.init();
  myObject.setPrivateMember(100);
  console.log(myObject.getSum(20));

}());