详解AngularJS 模块化

2019-11-19 16:20:13

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学习要点：

控制器模块化
指令模块化
过滤器模块化
服务模块化
定义值模块化
使用模块工作

第一步：创建一个模块

// function : define module named exampleApp// param detail :// param one : module name// param two : relay on modules collection// parms three : config informationvar myApp = angular.module("exampleApp", ["exampleApp.Controllers", ["exampleApp.Controllers", "exampleApp.Filters", "exampleApp.Directives", "exampleApp.Service", "exampleApp.Values"])

在视图中应用模块

<!-- use module --><html ng-app="exampleApp"> ...</html>

第二步：定义值

var valueModule = angular.module("exampleApp.Values", [])// defind valuevar now = new Date();valueModule.value("nowValue", now);

第三步：定义服务

var serviceModule = angular.module("exampleApp.Service", [])// function : define a service named daysserviceModule.service("days", function (nowValue) {  this.today = nowValue.getDay();  this.tomorrow = this.today + 1; })

第四步：定义控制器

var controllerModule = angular.module("exampleApp.Controllers", []);// function : define a controller named dayCtrl// the controller include two param:// param detail:// param one : name of controller// param two : a factory function // the param $scope of factory function show information to viewcontrollerModule.controller("dayCtrl", function ($scope, days) {   // days : use custom service // today is ... $scope.day = days.today; // tomorrow is ... $scope.tomorrow = 7;})

将控制器应用于视图

<!-- use controller --> <div class="panel" ng-controller="dayCtrl">  <div class="panel-header">   <h3>Angular App</h3>  </div>  <!-- if the day is undefined, show unknow -->  <!-- use filter and data binding -->  <h4>Today is {{ day || "unknow" }}</h4>  <h4>Tomorrow is {{ tomorrow || "unknow" }}</h4> </div>

第五步：定义指令

var directiveModule = angular.module("exampleApp.Directives", []);// function : define a directive named highlight// it accepts two param// param one : the name of directive // param two : a factory methoddirectiveModule.directive("highlight", function ($filter) {  // get the filter function  var dayFilter = $filter("dayName");  // param detail:  // scope : view scope of action  // element : the element which uses the custom directive  // attrs : the attrs of the element  return function (scope, element, attrs) {   // console.log(dayFilter(scope.day));   if (dayFilter(scope.day) == attrs['highlight']) {    element.css("color", 'red');   }  } })

将指令应用于视图

...<h4 highlight="Saturday">Today is {{ day || "unknow" | dayName }}</h4>...

第六步：定义过滤器

var filterModule = angular.module("exampleApp.Filters", []);// function : define a fitler named dayNamefilterModule.filter('dayName', function () { var dayNames = ['Sunday', "Monday", 'Tuesday', 'Wednesday', 'Thurday', 'Friday', 'Saturday']; return function (input) {  // input is the value of data binding  return angular.isNumber(input % 7) ? dayNames[input % 7] : input % 7; };})

将过滤器应用于视图

<!-- 用 | 分开 --><h4 highlight="Saturday">Today is {{ day || "unknow" | dayName }}</h4><h4>Tomorrow is {{ tomorrow || "unknow" | dayName }}</h4>

最后，下面是完整的代码：

文件一：example.html

<!DOCTYPE><!-- use module --><html ng-app="exampleApp"><head> <title>Angluar test</title> <meta charset="utf-8"/> <link rel="stylesheet" type="text/css" href="css/bootstrap.min.css" rel="external nofollow" > <link rel="stylesheet" type="text/css" href="css/bootstrap-theme.min.css" rel="external nofollow" ></head><body> <!-- use controller --> <div class="panel" ng-controller="dayCtrl">  <div class="panel-header">   <h3>Angular App</h3>  </div>  <!-- if the day is undefined, show unknow -->  <!-- use defined directive "highlight" -->  <!-- use filter and data binding -->  <h4 highlight="Saturday">Today is {{ day || "unknow" | dayName }}</h4>  <h4>Tomorrow is {{ tomorrow || "unknow" | dayName }}</h4> </div><script type="text/javascript" src="js/angular.min.js"></script><script type="text/javascript" src="values/exampleValue.js"></script><script type="text/javascript" src="controllers/exampleController.js"></script><script type="text/javascript" src="filters/exampleFilter.js"></script><script type="text/javascript" src="directives/exampleDirective.js"></script><script type="text/javascript" src="services/exampleService.js"></script><script type="text/javascript">// function : define module named exampleApp// param detail :// param one : module name// param two : relay on modules collection// parms three : config informationvar myApp = angular.module("exampleApp", ["exampleApp.Controllers", "exampleApp.Filters", "exampleApp.Directives", "exampleApp.Service", "exampleApp.Values"])</script></body></html>

文件二：services/exampleService.js

var serviceModule = angular.module("exampleApp.Service", [])// function : define a service named daysserviceModule.service("days", function (nowValue) {  this.today = nowValue.getDay();  this.tomorrow = this.today + 1; })

文件三：values/exampleValue.js

var valueModule = angular.module("exampleApp.Values", [])// defind valuevar now = new Date();valueModule.value("nowValue", now);

文件四：directives/exampleDirective.js

var directiveModule = angular.module("exampleApp.Directives", []);// function : define a directive named highlight// it accepts two param// param one : the name of directive // param two : a factory methoddirectiveModule.directive("highlight", function ($filter) {  // get the filter function  var dayFilter = $filter("dayName");  // param detail:  // scope : view scope of action  // element : the element which uses the custom directive  // attrs : the attrs of the element  return function (scope, element, attrs) {   // console.log(dayFilter(scope.day));   if (dayFilter(scope.day) == attrs['highlight']) {    element.css("color", 'red');   }  } })

文件五：controllers/exampleController.js

var controllerModule = angular.module("exampleApp.Controllers", []);// function : define a controller named dayCtrl// the controller include two param:// param detail:// param one : name of controller// param two : a factory function // the param $scope of factory function show information to viewcontrollerModule.controller("dayCtrl", function ($scope, days) {  // days : use custom service // today is ... $scope.day = days.today; // tomorrow is ... $scope.tomorrow = days.tomorrow;})

文件六：filters/exampleFilter.js

var filterModule = angular.module("exampleApp.Filters", []);// function : define a fitler named dayNamefilterModule.filter('dayName', function () { var dayNames = ['Sunday', "Monday", 'Tuesday', 'Wednesday', 'Thurday', 'Friday', 'Saturday']; return function (input) {  // input is the value of data binding  return angular.isNumber(input % 7) ? dayNames[input % 7] : input % 7; };})

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