Using $rootScope.$emit() As A Performance Optimization In AngularJS

Yesterday, I looked at how to create a simple modal window system in AngularJS. In that exploration, I used the $rootScope to bridge the gap between the modal Service and the modal directive. In the past, I've used the same approach to bridge the gap between a global uploader service and its Plupload directive. As it turns out, the scope tree acts as a wonderful pub/sub (Publish and Subscribe) mec