React quiz

Test your React knowledge with a free interactive quiz — 50 questions with answers and explanations. No signup needed to play.

What is the purpose of `useEffect`?

1. What is the purpose of `useEffect`?
2. What is lifting state up in React?
3. What is React.StrictMode?
4. What does the dependency array in `useEffect` control?
5. What is reconciliation in React?
6. What is prop drilling?
7. What is the correct way to handle events in React?
8. What is the virtual DOM in React?
9. What is `useCallback`?
10. What hook is used to manage local state in a functional component?
11. What is a React component?
12. What is a higher-order component (HOC)?

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