👀 Views: 325 💬 Answers: 1 📅 Created: 2025-06-12

angularjs scope events controllers JavaScript

I'm prototyping a solution and I tried several approaches but none seem to work. I'm working with an scenario where my custom event is not being captured by a nested controller using `$scope.$on`. Specifically, I have a parent controller that emits an event when a certain action occurs, but the child controller does not seem to pick it up. Here's how I set it up: In my parent controller, I emit the event like this: ```javascript $scope.emitCustomEvent = function() { $scope.$emit('customEvent', { data: 'some data' }); }; ``` In the child controller, I'm trying to listen for this event: ```javascript $scope.$on('customEvent', function(event, args) { console.log('Event received:', args); }); ``` However, the console output shows that the listener is never triggered. I've verified that the `emitCustomEvent` function is called, but I don't see any logs from the child controller. I also tried using `$scope.$broadcast` in the parent instead, but that didn't work either. To troubleshoot, I've confirmed that both controllers are correctly instantiated and that the event name matches. I even added a `$scope.$watch` on a variable that gets updated when the event should be emitted, and I know that part is functioning correctly. I’ve searched for similar issues and found some discussions suggesting that `$emit` and `$broadcast` can behave unexpectedly in certain scopes, but I’m not sure what the best practices are for communicating between nested controllers. Is there something I might be missing? Could it be a question with the scope hierarchy? Any guidance would be appreciated! What's the best practice here? I'm developing on Windows 11 with Javascript. Am I approaching this the right way? I'm working on a mobile app that needs to handle this. Is there a better approach?