Angular1 Scope variables in angular2

Question

I am using scope.$on, scope.$watch,scope.$broadcast, $scope.$apply,$scope.$emit. etc, in angular1 . but when i try to write my code in angular2 , i heard these properties are not valid in angular2 . so anyone suggest substitute for those kind of stuff.

Answer 1

Nothing you mentioned exists in Angular2.
In Angular2 you use services and observables instead.

See also https://angular.io/docs/ts/latest/cookbook/component-communication.html#!#bidirectional-service