Next JS Interview Questions

45 questions in this collection

0 free samples · 45 member questions

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Prepare for Next.js interviews on rendering and routing, including Pages Router data-fetching methods. Practice explaining API routes, image optimization and error handling.

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1. Explain the concept of server-side rendering in Next.js.

easy
2. How do you create a dynamic route in Next.js?

easy
3. What does getStaticProps do in Next.js?

easy
4. Can you explain the difference between CSR and SSR?

easy
5. What role does the 'pages' directory play in a Next.js application?

easy
6. How do you handle static assets in Next.js?

easy
7. Explain the use of the Link component in Next.js.

easy
8. What is _app.js used for in Next.js?

easy
9. How do you create an API endpoint in Next.js?

easy
10. What are environment variables and how are they used in Next.js?

easy
11. How does Next.js optimize performance for static pages?

medium
12. Explain the concept of Incremental Static Regeneration in Next.js.

medium
13. What are the differences between getServerSideProps, getStaticProps, and getInitialProps in Next.js?

medium
14. How do you implement internationalized routing in Next.js?

medium
15. Discuss the use of the Image component provided by Next.js.

medium
16. How do you customize the Next.js Babel configuration?

medium
17. What are the best practices for security in Next.js applications?

medium
18. How do you manage state in a Next.js application?

medium
19. Explain the role of the public directory in a Next.js application.

medium
20. How can you optimize third-party scripts or libraries in a Next.js application?

medium
21. Describe how to use CSS modules in Next.js.

medium
22. How do you handle authentication in Next.js?

medium
23. What is Automatic Static Optimization in Next.js?

medium
24. How do you deploy a Next.js application?

medium
25. Explain the differences between Next.js and Create React App.

medium
26. How do you enable TypeScript support in a Next.js project?

medium
27. Discuss the ways to handle errors in a Next.js application.

medium
28. How can you improve the SEO of a Next.js application?

medium
29. What is the purpose of the Next.js Head component?

medium
30. Explain the use of Custom App (_app.js) and Custom Document (_document.js) in Next.js.

medium
31. How do you implement middleware in Next.js applications?

hard
32. Explain the process of creating a custom server in Next.js.

hard
33. How do you optimize image loading using the Image component in Next.js?

hard
34. Discuss the use of WebSockets in a Next.js application.

hard
35. How do you implement server-side caching in Next.js?

hard
36. Explain the concept and implementation of dynamic imports in Next.js.

hard
37. How do you secure API routes in a Next.js application?

hard
38. Discuss the implementation of custom hooks in Next.js for state management.

hard
39. How do you handle form submission and validation in Next.js?

hard
40. Explain how to use the useRouter hook in Next.js for programmatic navigation.

hard
41. How can you customize the error handling experience in Next.js?

hard
42. Discuss the integration of GraphQL in a Next.js application.

hard
43. How do you manage global state in Next.js without external libraries?

hard
44. Explain the use and customization of the Next.js progress bar.

hard
45. Discuss the strategies for implementing feature flags in Next.js.

hard

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