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

下是存储在web服务器上的 JSON 文件：

{
    "records": [
        {
            "Name": "Alfreds Futterkiste",
            "City": "Berlin",
            "Country": "Germany"
        },
        {
            "Name": "Ana Trujillo Emparedados y helados",
            "City": "Mxico D.F.",
            "Country": "Mexico"
        },
        {
            "Name": "Antonio Moreno Taquera",
            "City": "Mxico D.F.",
            "Country": "Mexico"
        },
        {
            "Name": "Around the Horn",
            "City": "London",
            "Country": "UK"
        },
        {
            "Name": "B's Beverages",
            "City": "London",
            "Country": "UK"
        },
        {
            "Name": "Berglunds snabbk枚p",
            "City": "Lule",
            "Country": "Sweden"
        },
        {
            "Name": "Blauer See Delikatessen",
            "City": "Mannheim",
            "Country": "Germany"
        },
        {
            "Name": "Blondel pre et fils",
            "City": "Strasbourg",
            "Country": "France"
        },
        {
            "Name": "Blido Comidas preparadas",
            "City": "Madrid",
            "Country": "Spain"
        },
        {
            "Name": "Bon app'",
            "City": "Marseille",
            "Country": "France"
        },
        {
            "Name": "Bottom-Dollar Marketse",
            "City": "Tsawassen",
            "Country": "Canada"
        },
        {
            "Name": "Cactus Comidas para llevar",
            "City": "Buenos Aires",
            "Country": "Argentina"
        },
        {
            "Name": "Centro comercial Moctezuma",
            "City": "Mxico D.F.",
            "Country": "Mexico"
        },
        {
            "Name": "Chop-suey Chinese",
            "City": "Bern",
            "Country": "Switzerland"
        },
        {
            "Name": "Comrcio Mineiro",
            "City": "So Paulo",
            "Country": "Brazil"
        }
    ]
}

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。

<div ng-app="myApp" ng-controller="customersCtrl"> 

<ul>
  <li ng-repeat="x in names">
    {{ x.Name + ', ' + x.Country }}
  </li>
</ul>

</div>
<script type="text/javascript" src="js/angular.min.js"></script>
<script>
var app = angular.module('myApp', []);
app.controller('customersCtrl', function($scope, $http) {
    $http.get("js/text.json")
    .success(function(response) {$scope.names = response.records;});
});
</script>

结果：

• Alfreds Futterkiste, Germany
• Ana Trujillo Emparedados y helados, Mexico
• Antonio Moreno Taquera, Mexico
• Around the Horn, UK
• B's Beverages, UK
• Berglunds snabbk枚p, Sweden
• Blauer See Delikatessen, Germany
• Blondel pre et fils, France
• Blido Comidas preparadas, Spain
• Bon app', France
• Bottom-Dollar Marketse, Canada
• Cactus Comidas para llevar, Argentina
• Centro comercial Moctezuma, Mexico
• Chop-suey Chinese, Switzerland
• Comrcio Mineiro, Brazil   

应用解析:

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：  我这儿是写了text.json。

当从服务端载入 JSON 数据时，$scope.names 变为一个数组。

 注：以上代码也可以用于读取数据库数据。

转载地址：http://www.runoob.com/angularjs/angularjs-http.html