React Quiz
Hooks, rendering, state, and effects — this React quiz tests the concepts that matter in real components. Perfect for front-end interview prep or a quick team battle.
▶ Play the React QuizWhat you'll be tested on
- useState, useEffect, and custom hooks
- Rendering and reconciliation
- Props, context, and state
- Performance and common pitfalls
How it works
1. Pick your mode. Play solo to learn at your own pace, or host a room and battle friends live.
2. Answer timed questions. Fresh AI-generated questions every round — no two games are the same.
3. Climb the leaderboard. Track streaks, XP and accuracy as you master React.
Frequently asked questions
Does the React quiz cover hooks?
Yes — hooks are central, including useEffect timing and custom hooks.
Is this good for front-end interviews?
Definitely, it targets the applied React knowledge interviewers ask about.
Is JBattle free?
Yes. Playing quizzes, hosting rooms, and challenging friends on JBattle is completely free and runs in your browser — no download needed.