<html> <head>
<meta charset="utf-8">
<title>AngularJS 依赖注入</title>
</head> <body>
<h2>AngularJS 简单应用</h2> <div ng-app = "mainApp" ng-controller = "CalcController">
<p>输入一个数字: <input type = "number" ng-model = "number" /></p>
<button ng-click = "square()">X<sup>2</sup></button>
<p>结果: {{result}}</p>
</div> <script src="http://cdn.static.runoob.com/libs/angular.js/1.4.6/angular.min.js"></script> <script>
var mainApp = angular.module("mainApp", []); // 使用 provider 创建 service 定义一个方法用于计算两数乘积
/*mainApp.config(function($provide) {
$provide.provider('MathService', function() {
this.$get = function() {
var factory = {}; factory.multiply = function(a, b) {
return a * b;
}
return factory;
};
});
});*/ // 创建 value 对象 "defaultInput" 并传递数据
mainApp.value("defaultInput", 5); // 创建 factory "MathService" 用于两数的乘积 provides a method multiply to return multiplication of two numbers
mainApp.factory('MathService', function() {
var factory = {}; factory.multiply = function(a, b) {
return a * b;
}
return factory;
}); // 在 service 中注入 factory "MathService"
mainApp.service('CalcService', function(MathService){
this.square = function(a) {
return MathService.multiply(a,a);
}
}); // CalcService 和 defaultInput 是前面定义的service和默认值
mainApp.controller('CalcController', function($scope, CalcService, defaultInput) {
$scope.number = defaultInput;
$scope.result = CalcService.square($scope.number); // 按钮 ng-click="square" 绑定
$scope.square = function() {
$scope.result = CalcService.square($scope.number);
}
}); </script> </body>
</html>