722. React Effect Ownership and Cleanup

Easy•

Select the best answer.

React.useEffect(() => {
  connect(roomId);
  return () => disconnect(roomId);
}, [roomId]);

Why must cleanup use previous room id closure?

Not requireddisconnect ignores idCleanup runs only onceEach effect instance owns its dependencies

Select an option and submit your answer.

Next ProblemAuto-advance on correct answer