AngularJS Controllers function declaration at the top

angularjs_controllers3.js

(function () {
  'use strict';

  var MyController = function (dependencyOne, dependecyTwo) {
    var vm = this;

    vm.data = {
      greetingMessage: 'Hello I am some data from the controller',
      clickHandler: dependecyOne.click
    }
  }

  angular
    .module('app')
    .controller('MyController', [
      'dependencyOne', 
      'dependecyTwo', 
      MyController
    ]);

})();