useTransition for Non-Blocking UI Updates
Wrap expensive state updates in startTransition so the UI stays responsive.
Welcome
In this lesson you will use the useTransition hook to mark expensive state updates as non-urgent, keeping the UI responsive while heavy rendering happens in the background.
The Blocking Update Problem
When you type in a search box that filters a large list, React must re-render the entire filtered list on every keystroke. This blocks the input from updating immediately, making the UI feel sluggish.
All lessons in this course
- Racing Conditions & Effect Cleanup
- useTransition for Non-Blocking UI Updates
- useDeferredValue for Input Debouncing
- Suspense for Data & Code Boundaries