Here are five common Next.js interview questions:
- What is Next.js, and what are some of its main features?
- Next.js is a React-based web framework that provides several features to help you build server-rendered React applications.
- Some of its main features include server-side rendering, automatic code splitting, static file serving, and client-side routing.
2. What is the difference between client-side rendering and server-side rendering?
- Client-side rendering (CSR) means that the initial HTML is empty, and JavaScript is used to fetch data and render the UI.
- Server-side rendering (SSR) means that the HTML is generated on the server and sent to the client, reducing the time it takes to load the page.
3. What is getStaticProps in Next.js, and how does it work?
- getStaticProps is a function that runs at build time and generates props for a page.
- It is used to fetch data from an external API or database and pass it as props to your components.
4. What is the difference between getStaticProps and getServerSideProps in Next.js?
- getStaticProps is used for pre-rendering static pages at build time, while getServerSideProps is used for pre-rendering dynamic pages on the server at runtime.
- getStaticProps generates static HTML files, while getServerSideProps generates HTML on every request.
5. How does Next.js handle code splitting?
- Next.js automatically splits your code into smaller chunks, called “chunks,” based on the routes and components used in your app.
- This allows for faster loading times and better performance, as users only need to download the code they need to view the current page.
