AngularJS入门教程之 XMLHttpRequest实例讲解
AngularJS 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/angularjs/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) {
$http.get("http://www.runoob.com/try/angularjs/data/Customers_JSON.php")
.success(function (response) {$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。
$http.get() 从web服务器上读取静态 JSON 数据。
服务器数据文件为： http://www.runoob.com/try/angularjs/data/Customers_JSON.php。
当从服务端载入 JSON 数据时，$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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