Sep 9, 2021
Keep the React app responsive even during large screen updates with startTransition API introduced in React 18
The newly introduced startTransition API helps to improve the user interactions by categorizing the state updates as urgent and non-urgent.
Jul 29, 2021
React 18 improves the existing behavior of Suspense
React 18 delays committing everything inside the Suspense boundary (the suspended component and all its siblings) until the suspended data resolves.
Jul 22, 2021
React 18 adds automatic batching
React 18 adds out-of-the-box performance improvements by doing more batching by default.
Jul 15, 2021
React 18 introduces new root API ( ReactDOM.createRoot )
React 18 adds the new root API that comes up with the new out-of-the-box improvements.
Jul 8, 2021
React 17 attaches events to the root DOM container instead of the document node
React 17 delegates events to the root node instead of the document node, making it easier to embed React into apps built with other technologies
Jul 1, 2021
React 17 introduces new JSX transform
React 17 introduces jsx-runtime and jsx-dev-runtime that enables the user to write JSX without importing React.
Jun 11, 2021
React 17 runs useEffect cleanup functions asynchronously
React 17 executes useEffect cleanup functions asynchronously, improving the performance of large applications.
Jun 4, 2021
Redux 4.1.0 converts error messages from strings to error code indexes
Redux 4.1.0 extracts error messages from production build, converts them into error code indexes, thereby shrinking the bundle size.
May 14, 2021
React 17 internally uses the browser's focusin and focusout events for onFocus and onBlur events
React's onFocus and onBlur events have switched to using the native focusin and focusout events under the hood.
Apr 23, 2021
React 17 adds support for KeyboardEvent.code property to SyntheticEvent
Starting with React 17, KeyboardEvent.code property is available on React keyboard event.
