Next.js Tutorial

Next.js is an open-source framework based on React for building fast, modern web applications.

Next.js is used to build modern web applications with high-performance server-side rendering (SSR) and static generation.

Next.js is developed and maintained by Vercel, aiming to simplify the development process of React applications while providing powerful performance optimization and development experience.

Relationship with React

React is a JavaScript library for building user interfaces, while Next.js is a framework built on top of React.

React focuses on building UI components, while Next.js provides more features and structure to help developers solve some development issues that are cumbersome in React, such as routing, data fetching, and page rendering.

Who is this tutorial for?

As long as you have basic knowledge of HTML and CSS, you can read this tutorial and develop your own website.

Next.js is not only suitable for individual developers to quickly set up projects, but also for large teams to build complex full-stack applications.

Next.js has a low entry barrier; it is built on React, which is one of the most popular front-end frameworks today.

If you already have some understanding of React, learning Next.js will be easier.

Prerequisites for reading this tutorial:

Before you start reading this tutorial, you must have basic knowledge of HTML, CSS, and JavaScript. If you are not yet familiar with these concepts, we recommend you read our tutorials first:

Next.js Examples

By default, Next.js creates an index.js file in the pages folder, which is the home page of the application. We can modify the code of this file to the following:

Next.js Examples

export default function Home() { return <div>Hello, World!</div>; }

Key Features

  • File-system routing:Next.js uses the file system to automate route creation. You just need to create files in thepagesdirectory, and they will automatically map to corresponding routes without the need for additional route configuration.
  • Static Generation (SSG) and Server-Side Rendering (SSR):Next.js supports both rendering methods, allowing flexible choices based on needs. Static generation is suitable for most cases, especially pages whose content does not change frequently, while SSR is suitable for pages that need to fetch data dynamically.
  • API routes:Next.js allows you to create API routes directly in your application. You canpages/apieasily create backend API endpoints in the directory to handle front-end and back-end logic.
  • Automatic code splitting:Each page only loads the JavaScript code it needs, ensuring faster application startup and reducing unnecessary resource consumption.
  • Image optimization:Next.js has built-in image optimization. Using thenext/imagecomponent can automatically select the best format, compression, lazy loading, etc. for images to improve page loading performance.
  • TypeScript support:Next.js supports TypeScript by default, allowing developers to enjoy stronger type checking during development.

Reference Links

Next.js official website:https://nextjs.org/

Next.js official documentation:https://nextjs.org/docs

GitHub source code:https://github.com/vercel/next.js

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