Q131. How do you create a dynamic route with app router in Next.js?
In the App Router, you create dynamic routes by using square brackets in the file name. For example, to create a dynamic blog post route, you would create a file named `[...
Technical Question Bank · Peer-Reviewed
Job Interview Questions and Answers Directory
Search and filter frequently asked interview questions across technical, programming, and behavioral domains. Tailor your interview preparation by difficulty for freshers or experienced developers (188 available).
Active:
Tag: nextjs ×
Q132. How do you create custom error pages in Next.js?
By creating error.js files in app directory. ```jsx // app/error.js export default function ErrorPage() { return Custom Error Page; } ```
Q133. How do you handle form submissions in Next.js?
Form handling in Next.js has evolved into two primary architectures: ### 1. Modern Approach: Server Actions (App Router - Recommended): Server Actions allow forms to exec...
Q134. How do you handle middleware in Next.js?
**Middleware** in Next.js enables you to run code on incoming requests before they are completed, ideal for authentication, bot detection, A/B testing, and URL rewrites: ...
Q135. How do you implement authentication in Next.js?
Authentication in Next.js applications is typically implemented using one of three industry-standard architectural patterns: ### 1. NextAuth.js / Auth.js (Industry Standa...
Q136. How to add authjs in Next.js app router?
To add authjs in nextjs app router, you can use the `next-auth` package. First, install it: ```bash npm install next-auth ``` Then, create a file named `[...nextauth].js`...
Q137. How do you handle authentication tokens in Next.js?
By using cookies or local storage to store authentication tokens. ```js // Example of setting a token in a cookie import Cookies from "js-cookie"; function setToken(token...
Q138. How to add credentials in Next.js app router?
To add credentials in Next.js app router, you can use the `next-auth` package with the Credentials provider. First, install it: ```bash npm install next-auth ``` Then, cr...
Q139. What is use server in Next.js?
The `use server` directive is used to indicate that a function should be executed on the server side. It allows you to write server-side logic in a component or function ...
Q140. Difference between using & not using use server in Next.js?
**Using `use server`**: The function is executed on the server side, allowing access to server-side resources and APIs. It can be used to perform operations that require ...