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If you want, you should be able to use Hooks in most of the new code you’re writing.Įven while Hooks were in alpha, the React community created many interesting examples and recipes using Hooks for animations, forms, subscriptions, integrating with other libraries, and so on. Currently, only getSnapshotBeforeUpdate() and componentDidCatch() methods don’t have equivalent Hooks APIs, and these lifecycles are relatively uncommon. Note that React Hooks don’t cover all use cases for classes yet but they’re very close. We described our plan for the next months in the recently published React Roadmap. It will soon be included into Create React App by default. We strongly recommend enabling a new lint rule called eslint-plugin-react-hooks to enforce best practices with Hooks. They are also supported in the latest Flow and TypeScript definitions for React. React Hooks are now supported by React DevTools.
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React Native will support Hooks in the 0.59 release. Hooks won’t work if you forget to update, for example, React DOM. Note that to enable Hooks, all React packages need to be 16.8.0 or higher. Yes! Starting with 16.8.0, React includes a stable implementation of React Hooks for:
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Code using Hooks will work side by side with existing code using classes. Instead, try using Hooks in some of the new components, and let us know what you think. We don’t recommend rewriting your existing applications to use Hooks overnight. The Hooks FAQ describes the gradual adoption strategy. Hooks have no breaking changes, and we have no plans to remove classes from React. showcases community-maintained Hooks recipes and demos.Making Sense of React Hooks explores the new possibilities unlocked by Hooks.Building Your Own Hooks demonstrates code reuse with custom Hooks.Hooks at a Glance is a fast-paced overview of the built-in Hooks.Introducing Hooks explains why we’re adding Hooks to React.If you’ve never heard of Hooks before, you might find these resources interesting: You can also build your own Hooks to share reusable stateful logic between components. Hooks let you use state and other React features without writing a class. In the root of your project folder, open React 16.8, React Hooks are available in a stable release! What Are Hooks? Now, figuring out the version of React used by Create React App requires some slight digging. You can look at the my-cool-app folder to see all the files and folders that now make up your React project: In your terminal or command line, enter the following commands to create a new app using called my-cool-app: npx create-react-app my-cool-appĪfter a few moments, you will see a new React app running in your browser: The Setting Up Your React Dev Environment Easily article goes into more detail how you can use it, but overall it is so simple, there is no harm in repeating it here. Once you have gotten yourself familiar with React, the other popular way to use React as part of your app is via the popular Create React App command tool. If you mix and match versions between them, you might run into some weird issues. Whatever you do, you should ensure that the version number for both React and ReactDOM are the same. For example, here is the path for referencing version 16.7.0: Choose the development.js file equivalent for both React ( ) and ReactDOM ( ). Once you have picked the version, you will typically see a lot of files that you can use. On that page, find the version picker on the top-right corner to see all available versions that you can use: Visit the unpkg CDN page for both react as well as react-dom. To change the version to something else, I don't recommend randomly putting version numbers in the path and seeing whether they return a valid JS file or not. The version of React that is used can easily be inferred by looking at the path. Like we covered in Building Your First React App, the easiest (and preferred) way to get started with React is by referencing the React and ReactDOM libraries directly from a CDN and specifying them in your HTML page like you would any old script: This article will quickly run through how you can jump between versions of React on an existing app really painlessly.
#Unpkg reactdom update
If your apps rely on React, you will find yourself at some point needing to update your version of React to something more recent to take advantage of these changes. Cool new features and under-the-hood improvements get added to to React all the time.