/** * Created by Administrator on 2016/10/15. */function setupModuleLoader(window) {    //...省略部分代码    //注意angular.module(‘name‘,[require])为定义并获取一个新的模块    //而anguular.module(‘name‘)为获取一个已存在的模块    //判断对象obj是否存在name属性，存在则直接返回name，否则调用函数factory设置该属性，并返回该属性    function ensure(obj, name, factory) {        return obj[name] || (obj[name] = factory());    }    //确保window对象下存在angular属性    var angular = ensure(window, ‘angular‘, Object);    //确保angular下存在module属性    return ensure(angular, ‘module‘, function() {        var modules = {};        return function module(name, requires, configFn) {            //如果模块名为hasOwnProperty，报错：不是有效的名字            var assertNotHasOwnProperty = function(name, context) {                if (name === ‘hasOwnProperty‘) {                    throw ngMinErr(‘badname‘, ‘hasOwnProperty is not a valid {0} name‘, context);                }            };            //保证模块名不是‘module’            assertNotHasOwnProperty(name, ‘module‘);            //若为模块的定义，并且name与已存在的模块名重复，将原有的模块置空，即同名的模块将被后面定义的模块覆盖            if (requires && modules.hasOwnProperty(name)) {                modules[name] = null;            }            //若模块名已存在，则直接返回模块的实例，否则定义一个新模块            return ensure(modules, name, function() {                //要定义一个新的模块，却没有require参数，报错；注意require为[]表示定义，没有该参数表示获取                if (!requires) {                    throw $injectorMinErr(‘nomod‘, "Module ‘{0}‘ is not available! You either misspelled " +                        "the module name or forgot to load it. If registering a module ensure that you " +                        "specify the dependencies as the second argument.", name);                }                var invokeQueue = [];                var runBlocks = [];                var config = invokeLater(‘$injector‘, ‘invoke‘);                //模块实例                var moduleInstance = {                    _invokeQueue: invokeQueue,                    _runBlocks: runBlocks,                    requires: requires,                    name: name,                    provider: invokeLater(‘$provide‘, ‘provider‘),                    factory: invokeLater(‘$provide‘, ‘factory‘),                    service: invokeLater(‘$provide‘, ‘service‘),                    value: invokeLater(‘$provide‘, ‘value‘),                    constant: invokeLater(‘$provide‘, ‘constant‘, ‘unshift‘),                    animation: invokeLater(‘$animateProvider‘, ‘register‘),                    filter: invokeLater(‘$filterProvider‘, ‘register‘),                    controller: invokeLater(‘$controllerProvider‘, ‘register‘),                    directive: invokeLater(‘$compileProvider‘, ‘directive‘),                    config: config,                    run: function(block) {                        runBlocks.push(block);                        return this;                    }                };                if (configFn) {                    config(configFn);                }                return moduleInstance;                //invokeLater返回一个函数，该函数在利用module创建控制器、服务等时调用，向invokeQueue中推入数据，并返回模块的实例                //这就是为什么我们可以在angularJS中这样写                //angular.module(‘someMoudule‘,[‘require1‘])                //.controller(...)                //.directive(...)                //而不用每次都写上模块名对应的变量名,就像下面这样                //var myapp=angular.module（...）;                //myapp.controller(...);                //myaap.directive(...);                function invokeLater(provider, method, insertMethod) {                    return function() {                        invokeQueue[insertMethod || ‘push‘]([provider, method, arguments]);                        return moduleInstance;                    };                }            });        };    });}