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 combine …

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.

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 will help you …

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。

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.

Oct 7, 2025 · This blog is the official source for the updates from the React team. Anything important, including release notes or deprecation notices, will be posted here first.

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 components.

React-based frameworks take this a step further. Instead of using an empty HTML file and letting React “take over” managing the page with JavaScript, they also generate the HTML automatically from your …

Mar 16, 2023 · The new React site (react.dev) teaches modern React with function components and Hooks. We’ve included diagrams, illustrations, challenges, and over 600 new interactive examples.

React 允许你将标签、CSS 和 JavaScript 组合成自定义“组件”，即 应用程序中可复用的 UI 元素。 上文中表示目录的代码可以改写成一个能够在每个页面中渲染的 <TableOfContents /> 组件。