Q61. What is a singleton router in Next.js?
In Next.js Pages Router, the **Singleton Router** refers to the global, shared router instance exported by `next/router`: ```javascript import Router from 'next/router'; ...
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Q62. What is next/script used for?
The `next/script` component is used to load external scripts in a Next.js application. It provides features like loading scripts asynchronously, deferring execution, and ...
Q63. What is middleware?
Middleware allows you to run code before a request is completed. Then, based on the incoming request, you can modify the response by rewriting, redirecting, modifying the...
Q64. What is a custom server in Next.js?
A way to customize the server-side behavior, e.g., with Express. ```js import { createServer } from "http"; import { parse } from "url"; import next from "next"; const po...
Q65. How do you perform client-side data fetching in Next.js?
Using `useEffect` and fetch or any other data fetching library like `axios`,`fetch` or `swr` by Next.js team. ``` import { useState, useEffect } from "react"; function Pr...
Q66. How do you set up GraphQL in Next.js?
By installing Apollo Client or any other GraphQL client and configuring it in the \_app.js file. ```bash npm install @apollo/client graphql yarn add @apollo/client graphq...
Q67. How do you create API endpoints in Next.js?
Next.js provides built-in serverless backend capabilities for creating REST or GraphQL endpoints: ### 1. In App Router (Route Handlers - Modern): Create a `route.ts` (or ...
Q68. What is the use of next-SEO in Next.js?
next-seo is a plugin for managing SEO metadata in Next.js applications, making it easier to set and manage meta tags, Open Graph tags, and other SEO-related elements. ```...
Q69. How do you handle routing in a Next.js app?
Next.js handles routing through a combination of file-system conventions and client-side navigation components: ### 1. Declarative Navigation (``): Always use `next/link`...
Q70. How do you configure next-i18next in Next.js?
By creating a next-i18next.config.js file and initializing it in the app. ```js // next-i18next.config.js module.exports = { i18n: { defaultLocale: "en", locales: ["en", ...