1.$scope
2.$rootScope
3.AngularJS 监听$scope中变量值的变化($watch()),脏检查 参考https://blog.youkuaiyun.com/houyanhua1/article/details/80245349
4.$scope.$on()$on、$emit和$broadcast的使用与区别
1.$scope
2.$rootScope
3.AngularJS 监听$scope中变量值的变化($watch()),脏检查 参考https://blog.youkuaiyun.com/houyanhua1/article/details/80245349
4.$scope.$on()$on、$emit和$broadcast的使用与区别