启动一个新的 React 项目

If you want to build a new app or a new website fully with React, we recommend picking one of the React-powered frameworks popular in the community. Frameworks provide features that most apps and sites eventually need, including routing, data fetching, and generating HTML.

注意

You need to install Node.js for local development. You can also choose to use Node.js in production, but you don’t have to. Many React frameworks support export to a static HTML/CSS/JS folder.

Production-grade React frameworks

Next.js

Next.js is a full-stack React framework. It’s versatile and lets you create React apps of any size—from a mostly static blog to a complex dynamic application. To create a new Next.js project, run in your terminal:

Terminal
npx create-next-app

If you’re new to Next.js, check out the Next.js tutorial.

Next.js is maintained by Vercel. You can deploy a Next.js app to any Node.js or serverless hosting, or to your own server. Fully static Next.js apps can be deployed to any static hosting.

Remix

Remix is a full-stack React framework with nested routing. It lets you break your app into nested parts that can load data in parallel and refresh in response to the user actions. To create a new Remix project, run:

Terminal
npx create-remix

If you’re new to Remix, check out the Remix blog tutorial (short) and app tutorial (long).

Remix is maintained by Shopify. When you create a Remix project, you need to pick your deployment target. You can deploy a Remix app to any Node.js or serverless hosting by using or writing an adapter.

Gatsby

Gatsby is a React framework for fast CMS-backed websites. Its rich plugin ecosystem and its GraphQL data layer simplify integrating content, APIs, and services into one website. To create a new Gatsby project, run:

Terminal
npx create-gatsby

If you’re new to Gatsby, check out the Gatsby tutorial.

Gatsby is maintained by Netlify. You can deploy a fully static Gatsby site to any static hosting. If you opt into using server-only features, make sure your hosting provider supports them for Gatsby.

Expo (for native apps)

Expo is a React framework that lets you create universal Android, iOS, and web apps with truly native UIs. It provides an SDK for React Native that makes the native parts easier to use. To create a new Expo project, run:

Terminal
npx create-expo-app

If you’re new to Expo, check out the Expo tutorial.

Expo is maintained by Expo (the company). Building apps with Expo is free, and you can submit them to the Google and Apple app stores without restrictions. Expo additionally provides opt-in paid cloud services.

深入探讨

Can I use React without a framework?

You can definitely use React without a framework—that’s how you’d use React for a part of your page. However, if you’re building a new app or a site fully with React, we recommend using a framework.

Here’s why.

Even if you don’t need routing or data fetching at first, you’ll likely want to add some libraries for them. As your JavaScript bundle grows with every new feature, you might have to figure out how to split code for every route individually. As your data fetching needs get more complex, you are likely to encounter server-client network waterfalls that make your app feel very slow. As your audience includes more users with poor network conditions and low-end devices, you might need to generate HTML from your components to display content early—either on the server, or during the build time. Changing your setup to run some of your code on the server or during the build can be very tricky.

These problems are not React-specific. This is why Svelte has SvelteKit, Vue has Nuxt, and so on. To solve these problems on your own, you’ll need to integrate your bundler with your router and with your data fetching library. It’s not hard to get an initial setup working, but there are a lot of subtleties involved in making an app that loads quickly even as it grows over time. You’ll want to send down the minimal amount of app code but do so in a single client–server roundtrip, in parallel with any data required for the page. You’ll likely want the page to be interactive before your JavaScript code even runs, to support progressive enhancement. You may want to generate a folder of fully static HTML files for your marketing pages that can be hosted anywhere and still work with JavaScript disabled. Building these capabilities yourself takes real work.

React frameworks on this page solve problems like these by default, with no extra work from your side. They let you start very lean and then scale your app with your needs. Each React framework has a community, so finding answers to questions and upgrading tooling is easier. Frameworks also give structure to your code, helping you and others retain context and skills between different projects. Conversely, with a custom setup it’s easier to get stuck on unsupported dependency versions, and you’ll essentially end up creating your own framework—albeit one with no community or upgrade path (and if it’s anything like the ones we’ve made in the past, more haphazardly designed).

If you’re still not convinced, or your app has unusual constraints not served well by these frameworks and you’d like to roll your own custom setup, we can’t stop you—go for it! Grab react and react-dom from npm, set up your custom build process with a bundler like Vite or Parcel, and add other tools as you need them for routing, static generation or server-side rendering, and more.

Bleeding-edge React frameworks

As we’ve explored how to continue improving React, we realized that integrating React more closely with frameworks (specifically, with routing, bundling, and server technologies) is our biggest opportunity to help React users build better apps. The Next.js team has agreed to collaborate with us in researching, developing, integrating, and testing framework-agnostic bleeding-edge React features like React Server Components.

These features are getting closer to being production-ready every day, and we’ve been in talks with other bundler and framework developers about integrating them. Our hope is that in a year or two, all frameworks listed on this page will have full support for these features. (If you’re a framework author interested in partnering with us to experiment with these features, please let us know!)

Next.js (App Router)

Next.js’s App Router is a redesign of the Next.js APIs aiming to fulfill the React team’s full-stack architecture vision. It lets you fetch data in asynchronous components that run on the server or even during the build.

Next.js is maintained by Vercel. You can deploy a Next.js app to any Node.js or serverless hosting, or to your own server. Next.js also supports static export which doesn’t require a server.

陷阱

Next.js’s App Router is currently in beta and is not yet recommended for production (as of Mar 2023). To experiment with it in an existing Next.js project, follow this incremental migration guide.

深入探讨

Which features make up the React team’s full-stack architecture vision?

Next.js’s App Router bundler fully implements the official React Server Components specification. This lets you mix build-time, server-only, and interactive components in a single React tree.

For example, you can write a server-only React component as an async function that reads from a database or from a file. Then you can pass data down from it to your interactive components:

// This component runs *only* on the server (or during the build).
async function Talks({ confId }) {
// 1. You're on the server, so you can talk to your data layer. API endpoint not required.
const talks = await db.Talks.findAll({ confId });

// 2. Add any amount of rendering logic. It won't make your JavaScript bundle larger.
const videos = talks.map(talk => talk.video);

// 3. Pass the data down to the components that will run in the browser.
return <SearchableVideoList videos={videos} />;
}

Next.js’s App Router also integrates data fetching with Suspense. This lets you specify a loading state (like a skeleton placeholder) for different parts of your user interface directly in your React tree:

<Suspense fallback={<TalksLoading />}>
<Talks confId={conf.id} />
</Suspense>

Server Components and Suspense are React features rather than Next.js features. However, adopting them at the framework level requires buy-in and non-trivial implementation work. At the moment, the Next.js App Router is the most complete implementation. The React team is working with bundler developers to make these features easier to implement in the next generation of frameworks.