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.

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 …

React 并没有规定你如何添加 CSS 文件。 最简单的方式是使用 HTML 的 <link> 标签。 如果你使用了构建工具或框架，请阅读其文档来了解如何将 CSS 文件添加到你的项目中。 显示数据 …

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.

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-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 …

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 …

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.

通常、key はデータから来るはずで、データベース上の ID などが該当します。 React は、後でアイテムを挿入、削除、並べ替えることがあった際に、何が起こったかを key を使って把握 …

如果你想构建自己的解决方案，请参阅我们的 从零构建一个 React 应用 指南，该指南提供了如何使用 Vite， Parcel，或 RSbuild 等构建工具设置新 React 项目的说明。 如果你是一个框架开 …