What is the most effective way to prevent unexpected behavior caused by rapidly changing routes in a React application using React Router v6?
React JS interview question for Advanced practice.
Answer
Implement cleanup logic in useEffect hooks to cancel stale data fetches when a component unmounts.
Explanation
Option C is the most effective and standard approach. When a component that fetches data unmounts due to a route change, its useEffect cleanup function should be used to cancel any in-flight requests (e.g., using an AbortController). This prevents race conditions and ensures that only data for the current route is processed. Options A, B, and D are poor practices that degrade user experience or are not robust solutions.