Web Reference: Jul 12, 2025 · The task is to share data variables between two or more controllers by using AngularJS. There are many procedures to achieve this. Here we will discuss the most popular ones. Approach: To share data between the controllers in AngularJS we have two main cases: I saw the answers here, and it is answering the question of sharing data between controllers, but what should I do if I want one controller to notify the other about the fact that the data has been changed (without using broadcast)? In AngularJS, multiple controllers often need to share data. Since controllers have isolated scopes, sharing data between them requires techniques like services, factories, events, and $rootScope.
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