(function(angular) {
            'use strict';
            angular.module('myApp2', [])
                    .factory('plusMath',function(){
                        var factory = {};
                        factory.plus = function(a,b){
                                return a+b;
                        }
                        return factory;
                    });
        })(window.angular);//副模块 依赖主模块 为主模块提供服务

        (function(angular) {
            'use strict';
            angular.module('myApp', ['myApp2'])
                    .controller('firstController', function firstController($scope,plusMath) {
                        $scope.name= 'test';
                        $scope.result = plusMath.plus(11,32);
                    });
        })(window.angular);//主模块

        window.onload = function(){
            var myAppdiv = document.getElementById('myApp22');
            angular.bootstrap(myAppdiv,['myApp']) //动态的绑定主mudule的html作用范围
        }