菜鸟学堂在线工具

源代码

<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://edu.jb51.net/libs/angular.js/1.4.6/angular.min.js"></script>
<script>
         var mainApp = angular.module("mainApp", []);
         
         mainApp.config(function($provide) {
            $provide.provider('MathService', function() {
               this.$get = function() {
                  var factory = {};
                  
                  factory.multiply = function(a, b) {
                     return a * b;
                  }
                  return factory;
               };
            });
         });
			
         mainApp.value("defaultInput", 5);
         
         mainApp.factory('MathService', function() {
            var factory = {};
            
            factory.multiply = function(a, b) {
               return a * b;
            }
            return factory;
         });
         
         mainApp.service('CalcService', function(MathService){
            this.square = function(a) {
               return MathService.multiply(a,a);
            }
         });
         
         mainApp.controller('CalcController', function($scope, CalcService, defaultInput) {
            $scope.number = defaultInput;
            $scope.result = CalcService.square($scope.number);

$scope.square = function() {
               $scope.result = CalcService.square($scope.number);
            }
         });
			
      </script>
</body>
</html>

运行结果 在线运行