AngularJS - Controllers

Initialize view state and behavior with controllers and scope.

How it works

Controllers initialize state and expose view behavior, commonly through $scope in older applications. Avoid using controllers as global storage or service containers. Component-style controllers and controller-as patterns can make ownership clearer.

Practice checklist

• Use examples that match the AngularJS version in the existing application.
• Keep user input, asynchronous states, and failures visible and understandable.
• Test keyboard access and validate important rules on the server.
• Review dependency support and migration needs before production changes.

Further reading: Tutorialspoint: AngularJS - Controllers · Official AngularJS developer guide · Migration guide.

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