### controllerAs的使用

2. 正常设置scope对象的参数，bindToController参数值改为true
   'use strict';
   angular.module('nodeInAction')
   .directive('countCard', function () {
   return {
   restrict: 'E',
   scope: {
   icon: '@',
   title: '@',
   count: '@',
   unit: '@',
   colorStyle: '@'
   },
   controllerAs: 'vm',
   bindToController: true,
   templateUrl: 'app/components/countCard/countCard.html',
   controller: function () {
   var vm = this;
   console.log(vm);
   }
   };
   });