Fortunately, React gives you a number of ways to tune UI performance, from ways to optimize updates to the DOM to the ability to render and fetch simultaneously using the new concurrent mode. Topics ...

The React versions are updated in dependencies of package.json: If you install a brand new Create React App, the React versions automatically point to React 18, although the changes of createRoot are ...

With React 19, these elements are now also available in JSX and can therefore be used in every component. React ensures that the elements move to the correct position in the head element at runtime.