React Concurrent Mode is a set of new features that help React apps stay responsive and gracefully adjust to the user's device capabilities and network speed.
It includes features like time slicing and suspense for data fetching.
Concurrent Mode allows React to interrupt, pause, and resume work as needed, making the UI more responsive and providing better user experience.
// Concurrent Mode is enabled by default in React 18+ import { createRoot } from 'react-dom/client';
const container = document.getElementById('root'); const root = createRoot(container);
root.render( <React.StrictMode> <App /> </React.StrictMode> );
// With Suspense for data fetching function UserProfile({ userId }) { const user = use(fetchUser(userId)); return <h1>{user.name}</h1>; }