$scope, $rootScope区别

scope是html和单个controller之间的桥梁，数据绑定就靠他了

rootscope是各个controller中scope的桥梁

总结：$rootScope.name设置的变量，在所有controller里面都是可以直接用{{$root.name}}来显示的，很强大。那当然也可以赋值给scope.

某个controller.js:

var phonecatApp  = angular.module('phonecatApp',[]);phonecatApp.controller('TestCtrl',['$scope','$rootScope',function($scope,$rootScope) {$rootScope.name = 'this is test';}]);phonecatApp.controller('Test111Ctrl',['$scope','$rootScope',function($scope,$rootScope) {$scope.name = $rootScope.name;}]);