AngularJS controllers are JavaScript functions that are responsible for defining the behavior of a particular part of an AngularJS application. They are used to handle user interactions, manipulate data, and update the view.
The scope is an object that refers to the application model. It acts as a bridge between the controller and the view, allowing them to communicate with each other. The scope contains the data that is used by the view and can be accessed and manipulated by the controller.
When a controller is defined, it is associated with a specific scope. This means that any changes made to the scope within the controller will be reflected in the view, and any changes made to the scope in the view will be accessible within the controller.
The scope can be used to define variables and functions that are needed by the view. These variables and functions can be accessed and used within the view using AngularJS expressions.
Controllers and scope work together to create a dynamic and interactive user interface. The controller defines the behavior and logic of the application, while the scope holds the data that is used by the view. By manipulating the scope within the controller, the view can be updated and respond to user interactions.