Now that the performance difference between $broadcast and $emit has been eliminated, is there any reason to prefer $scope.$emit to $rootScope.$broadcast?
They are different, yes.
$emit is restricted to the scope hierarchy (upwards) – this may be good, if it fits your design, but it seems to me a rather arbitrary restriction.
$rootScope.$broadcast works across all that choose to listen to the event, which is a more sensible restriction in my mind.
Am I missing something?
EDIT:
To clarify in response to an answer, the direction of the dispatch is not the issue I’m after. $scope.$emit dispatches the event upwards, and $scope.$broadcast – downwards. But why not always use $rootScope.$broadcast to reach all the intended listeners?
