React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript. React is designed to let you seamlessly …

Quick Start Welcome to the React documentation! This page will give you an introduction to 80% of the React concepts that you will use on a daily basis.

至此，你已经了解了如何编写 React 代码的基本知识。 接下来你可以查看 实战教程 并把它们付诸实践，用 React 建立第一个迷你应用程序。

You can use as little or as much React as you need. Whether you want to get a taste of React, add some interactivity to an HTML page, or start a complex React-powered app, this section …

Server APIs - The react-dom/server APIs let you render React components to HTML on the server. Static APIs - The react-dom/static APIs let you generate static HTML for React …

React Developer Tools is a browser extension that can inspect React components, edit props and state, and identify performance problems. Learn how to install it here.

If you want to build your own solutions, see our guide to build a React app from Scratch for instructions on how to set up a new React project starting with a build tool like Vite, Parcel, or …

Read Your UI as a Tree to learn how to create a render and module dependency trees for a React app and how they’re useful mental models for improving user experience and performance.

React te permite combinar tu marcado, CSS y JavaScript en “componentes” personalizados, elementos reutilizables de UI para tu aplicación. El código de la tabla de contenidos que viste …

In 2023, we launched our new docs for React 18 as react.dev. The legacy React 18 docs are available at legacy.reactjs.org. Versions 17 and below are hosted on legacy sites.