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 …

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 JSX 会让你把 …

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 RSbuild.

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 your app has constraints not well-served by existing frameworks, you prefer to build your own framework, or you just want to learn the basics of a React app, you can build a React app from scratch.

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 …

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 …

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.

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发者，希望在 …

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 を使って把握します。