React Quiz — Test Your Real Skill Level
React powers the UI of millions of web applications. Knowing when to reach for useEffect vs useMemo vs useCallback separates senior engineers from juniors — and recruiters are starting to ask.
React is listed in over 60% of frontend job postings. A verified React score on your resume proves you understand the component model, hooks, and rendering behaviour — not just the syntax.
Sample Questions
3 of 10Q1.What is the primary purpose of the useEffect cleanup function?
Q2.Which hook should you reach for to avoid an expensive recalculation on every render?
Q3.What does React.memo do?
Answer all 3 questions to see your score
Get your verified React score
Take the full 10-question quiz. Your score gets added to your developer resume as a verified skill badge — proof that you actually know React.
How verified skills work
Take the React quiz
10 adaptive questions covering real-world scenarios, not just syntax recall.
Your score is recorded
Skeelzy tracks your accuracy per skill over time — multiple attempts improve your verified score.
Add it to your resume
Your React accuracy appears as a verified badge on your public Skeelzy resume — proof for recruiters.