AngularJS XMLHttpRequest

程序员文章站 2022-06-10 17:29:10

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$http是AngularJS 中的一个核心服务，用于读取远程服务器的数据。
以下是存储在web服务器上的 JSON 文件data.json。

[
{
"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。

<!DOCTYPE html>
<html>
	<head lang="en">
		<meta charset="utf-8"></meta>
		<title>AngularJS XMLHttpRequest</title>
		<script src="angular/angular.js"></script>
	</head>
<body>
	<div ng-app="" ng-controller="customersController">
		<ul>
			<li ng-repeat="x in names">{{ x.Name + ', ' + x.Country }}</li>
		</ul>
	</div>
</body>
<script>
	function customersController($scope,$http) {
  		$http.get("data.json").success(function(response) {$scope.names = response;});
  		//$http.get("http://localhost:8088/angularjs-http/data.json").success(function(response) {$scope.names = response;});
	}
</script>
</html>

应用解析：
1.AngularJS 应用通过 ng-app 定义。应用在 <div> 中执行。
2.ng-controller 指令设置了controller 对象名。
3.函数 customersController 是一个标准的 JavaScript 对象构造器。
4.控制器对象有一个属性: $scope.names。
5.$http.get() 从web服务器上读取静态 JSON 数据。
6.当从服务端载入 JSON 数据时，$scope.names 变为一个数组。

运行结果：
AngularJS XMLHttpRequest

博客分类： AngularJS JavaScriptAngularJSXMLHttpRequest
工程结构：