AngularJS入门教程之 XMLHttpRequest实例讲解
人气:0AngularJS XMLHttpRequest
$http 是 AngularJS 中的一个核心服务,用于读取远程服务器的数据。
读取 JSON 文件
以下是存储在web服务器上的 JSON 文件:
http://www.runoob.com/try/angularjshttps://img.qb5200.com/download-x/data/Customers_JSON.php
{ "records": [ { "Name" : "Alfreds Futterkiste", "City" : "Berlin", "Country" : "Germany" }, { "Name" : "Berglunds snabbköp", "City" : "Luleå", "Country" : "Sweden" }, { "Name" : "Centro comercial Moctezuma", "City" : "México D.F.", "Country" : "Mexico" }, { "Name" : "Ernst Handel", "City" : "Graz", "Country" : "Austria" }, { "Name" : "FISSA Fabrica Inter. Salchichas S.A.", "City" : "Madrid", "Country" : "Spain" }, { "Name" : "Galería del gastrónomo", "City" : "Barcelona", "Country" : "Spain" }, { "Name" : "Island Trading", "City" : "Cowes", "Country" : "UK" }, { "Name" : "Königlich Essen", "City" : "Brandenburg", "Country" : "Germany" }, { "Name" : "Laughing Bacchus Wine Cellars", "City" : "Vancouver", "Country" : "Canada" }, { "Name" : "Magazzini Alimentari Riuniti", "City" : "Bergamo", "Country" : "Italy" }, { "Name" : "North/South", "City" : "London", "Country" : "UK" }, { "Name" : "Paris spécialités", "City" : "Paris", "Country" : "France" }, { "Name" : "Rattlesnake Canyon Grocery", "City" : "Albuquerque", "Country" : "USA" }, { "Name" : "Simons bistro", "City" : "København", "Country" : "Denmark" }, { "Name" : "The Big Cheese", "City" : "Portland", "Country" : "USA" }, { "Name" : "Vaffeljernet", "City" : "Århus", "Country" : "Denmark" }, { "Name" : "Wolski Zajazd", "City" : "Warszawa", "Country" : "Poland" } ] }
AngularJS $http
AngularJS $http 是一个用于读取web服务器上数据的服务。
$http.get(url) 是用于读取服务器数据的函数。
AngularJS 实例
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script> </head> <body> <div ng-app="myApp" ng-controller="customersCtrl"> <ul> <li ng-repeat="x in names"> {{ x.Name + ', ' + x.Country }} </li> </ul> </div> <script> var app = angular.module('myApp', []); app.controller('customersCtrl', function($scope, $http) { $http.get("http://www.runoob.com/try/angularjshttps://img.qb5200.com/download-x/data/Customers_JSON.php") .success(function (response) {$scope.names = response.records;}); }); </script> </body> </html>
运行结果:
- Alfreds Futterkiste, Germany
- Ana Trujillo Emparedados y helados, Mexico
- Antonio Moreno Taquería, Mexico
- Around the Horn, UK
- B's Beverages, UK
- Berglunds snabbköp, Sweden
- Blauer See Delikatessen, Germany
- Blondel père et fils, France
- Bólido Comidas preparadas, Spain
- Bon app', France
- Bottom-Dollar Marketse, Canada
- Cactus Comidas para llevar, Argentina
- Centro comercial Moctezuma, Mexico
- Chop-suey Chinese, Switzerland
- Comércio Mineiro, Brazil
应用解析:
注意:以上代码的 get 请求是本站的服务器,你不能直接拷贝到你本地运行,会存在跨域问题,解决办法就是将
Customers_JSON.php 的数据拷贝到你自己的服务器上,附:PHP Ajax 跨域问题最佳解决方案。
AngularJS 应用通过 ng-app 定义。应用在 <div> 中执行。
ng-controller 指令设置了 controller 对象 名。
函数 customersController 是一个标准的 JavaScript 对象构造器。
控制器对象有一个属性: $scope.names。
$http.get() 从web服务器上读取静态 JSON 数据。
服务器数据文件为: http://www.runoob.com/try/angularjshttps://img.qb5200.com/download-x/data/Customers_JSON.php。
当从服务端载入 JSON 数据时,$scope.names 变为一个数组。
注意:以上代码也可以用于读取数据库数据。
以上就是对AngularJS XMLHttpRequest资料的整理,后续继续补充,希望能帮助有需要的朋友。
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