Forms and Validation

Handling form submissions and data validation using Server Actions, Zod, and React hooks.

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Next.js Forms and Validation

Next.js leverages Server Actions and React’s specialized hooks to provide a seamless form-handling experience.

Key Components

  • Server Actions: Handle the backend logic of the form submission.
  • useActionState (formerly useFormState): Manages the state of the form (e.g., success message, validation errors) returned from the action.
  • useFormStatus: Provides the pending state of the submission for UI feedback (like loading spinners).
  • Zod: Often used alongside Server Actions to validate FormData on the server before processing.
  • Progressive Enhancement: Forms can work with standard HTML <form action="..."> even before JavaScript has loaded.