AngularJS作用域（Scope）
Scope作用域是应用在视图和控制器之间的纽带，Scope是一个对象包含可用的方法和属性，Scope可以应用在试图和控制器上。
$scope是针对当前的controller的作用域生效
$rootScope是针对全局controller的作用域生效
下面使用代码进行这个作用域的演示
1 <html> 2 <head> 3 <title>AngularJS作用域</title> 4 <meta charset="utf-8" /> 5 <script src="js/angular.min.js"></script> 6 <style> 7 .frame { 8 height:250px; 9 border:1px solid black; 10 background-color:lightblue; 11 padding:10px; 12 margin:20px; 13 } 14 15 </style> 16 </head> 17 <body ng-app="myApp"> 18 <div class="frame" ng-controller="oneController"> 19 scope1 :{{scope1}}<br /> 20 rootScope1: {{rootScope1}}<br /> 21 scope2 :{{scope2}}<br /> 22 rootScope2 :{{rootScope2}}<br /> 23 </div> 24 25 <div class="frame" ng-controller="towController"> 26 scope1 :{{scope1}}<br /> 27 rootScope1: {{rootScope1}}<br /> 28 scope2 :{{scope2}}<br /> 29 rootScope2 :{{rootScope2}}<br /> 30 </div> 31 32 <script> 33 var app = angular.module("myApp", []); 34 app.controller("oneController", function ($scope,$rootScope) { 35 $scope.scope1 = "我是scope1"; 36 $rootScope.rootScope1 = "我是rootScope1"; 37 }) 38 app.controller("towController", function ($scope, $rootScope) { 39 $scope.scope2 = "我是scope2"; 40 $rootScope.rootScope2 = "我是rootscope2"; 41 }) 42 </script> 43 </body> 44 </html>