Introducing the New JSX Transform – React Blog
This blog site has been archived. Go to react.dev/blog to see the recent posts. Although React 17 doesn’t contain new features, it will provide support for a new version of the JSX transform. In this post, we will describe what it is and how to try it. What’s a JSX Transform? Browsers don’t understand JSX out of the box, so most React users rely on a compiler like Babel or TypeScript to transform
React v17.0 Release Candidate: No New Features – React Blog
This blog site has been archived. Go to react.dev/blog to see the recent posts. Today, we are publishing the first Release Candidate for React 17. It has been two and a half years since the previous major release of React, which is a long time even by our standards! In this blog post, we will describe the role of this major release, what changes you can expect in it, and how you can try this relea
Introducing the New React DevTools – React Blog
We are excited to announce a new release of the React Developer Tools, available today in Chrome, Firefox, and (Chromium) Edge! What’s changed? A lot has changed in version 4! At a high level, this new version should offer significant performance gains and an improved navigation experience. It also offers full support for React Hooks, including inspecting nested objects. Visit the interactive tuto
React v16.8: The One With Hooks – React Blog
This blog site has been archived. Go to react.dev/blog to see the recent posts. With React 16.8, React Hooks are available in a stable release! What Are Hooks? Hooks let you use state and other React features without writing a class. You can also build your own Hooks to share reusable stateful logic between components. If you’ve never heard of Hooks before, you might find these resources interesti
React 16.x Roadmap – React Blog
This blog site has been archived. Go to react.dev/blog to see the recent posts. You might have heard about features like “Hooks”, “Suspense”, and “Concurrent Rendering” in the previous blog posts and talks. In this post, we’ll look at how they fit together and the expected timeline for their availability in a stable release of React. An Update from August, 2019 You can find an update to this roadm
Create React App 2.0: Babel 7, Sass, and More – React Blog
This blog site has been archived. Go to react.dev/blog to see the recent posts. Create React App 2.0 has been released today, and it brings a year’s worth of improvements in a single dependency update. While React itself doesn’t require any build dependencies, it can be challenging to write a complex app without a fast test runner, a production minifier, and a modular codebase. Since the very firs
Update on Async Rendering – React Blog
This blog site has been archived. Go to react.dev/blog to see the recent posts. For over a year, the React team has been working to implement asynchronous rendering. Last month during his talk at JSConf Iceland, Dan unveiled some of the exciting new possibilities async rendering unlocks. Now we’d like to share with you some of the lessons we’ve learned while working on these features, and some rec
Animation Add-Ons – React
Note: ReactTransitionGroup and ReactCSSTransitionGroup have been moved to the react-transition-group package that is maintained by the community. Its 1.x branch is completely API-compatible with the existing addons. Please file bugs and feature requests in the new repository. The ReactTransitionGroup add-on component is a low-level API for animation, and ReactCSSTransitionGroup is an add-on compon
React v15.5.0 – React Blog
This blog site has been archived. Go to react.dev/blog to see the recent posts. It’s been exactly one year since the last breaking change to React. Our next major release, React 16, will include some exciting improvements, including a complete rewrite of React’s internals. We take stability seriously, and are committed to bringing those improvements to all of our users with minimal effort. To that
React v15.0 – React Blog
This blog site has been archived. Go to react.dev/blog to see the recent posts. We would like to thank the React community for reporting issues and regressions in the release candidates on our issue tracker. Over the last few weeks we fixed those issues, and now, after two release candidates, we are excited to finally release the stable version of React 15. As a reminder, we’re switching to major
New React Developer Tools – React Blog
This blog site has been archived. Go to react.dev/blog to see the recent posts. A month ago, we posted a beta of the new React developer tools. Today, we’re releasing the first stable version of the new devtools. We’re calling it version 0.14, but it’s a full rewrite so we think of it more like a 2.0 release. It contains a handful of new features, including: Built entirely with React, making it ea
Lifting State Up – React
These docs are old and won’t be updated. Go to react.dev for the new React docs. These new documentation pages teach modern React and include live examples: Sharing State Between Components Often, several components need to reflect the same changing data. We recommend lifting the shared state up to their closest common ancestor. Let’s see how this works in action. In this section, we will create a
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