Automatically bind to elements. Server actions can be invoked using the action attribute in a element Handle form data parsing and validation. Support pending states (e.g., loading buttons). // Inside a Server Component or a separate file with 'use server' async function deletePost(postId) { 'use server'; await db.posts.delete({ id: postId }); revalidatePath('/posts'); } // Client Component (using the action) Delete Post

What are actions?

Difficulty: 6/10

server actions, form handling, data mutation

A subset of Server Actions focused on form submissions. They simplify handling form data without manual fetch calls.

Key Features:

1
Automatically bind to <form> elements. Server actions can be invoked using the action attribute in a <form> element
2
Handle form data parsing and validation.
3
Support pending states (e.g., loading buttons).

javascript

Scenario Questions

0-2 years experience

1How would you add a server action to handle a profile‑update form submission in a Next.js 13 app?
2If a server action called from a client component fails due to a network error, what does the user see and how would you handle it?
3What steps do you take to ensure the data returned from a server action is type‑safe?

Follow-up Questions

How do server actions differ from traditional API routes in terms of latency and developer experience?
What are the main limitations you’ve hit when using actions with third‑party libraries?
How would you test a server action in a CI pipeline?