$rootscope.$broadcast and $rootscope.$emit

Question

What is the Differences between $rootscope.$broadcast and $rootscope.$emit ? Please dont speak about its direction.

kanuru sagar · Answer

$emit dispatches an event upwards ... $broadcast dispatches an event downwards Detailed explanation $rootScope.$emit only lets other $rootScope listeners catch it. This is good when you don't want every $scope to get it. Mostly a high level communication. Think of it as adults talking to each other in a room so the kids can't hear them. $rootScope.$broadcast is a method that lets pretty much everything hear it. This would be the equivalent of parents yelling that dinner is ready so everyone in the house hears it. $scope.$emit is when you want that $scope and all its parents and $rootScope to hear the event. This is a child whining to their parents at home (but not at a grocery store where other kids can hear). $scope.$broadcast is for the $scope itself and its children. This is a child whispering to its stuffed animals so their parents can't hear.