Node.js Quiz
Node.js MCQs on the event loop, modules, npm, Express, streams, middleware and REST APIs - everything backend JavaScript interviews test.
Skill map
Levels in this node.js quiz
Every question is generated fresh by AI and calibrated to your level - clear a level and the next one gets harder. Miss one and the AI tutor explains Node.js until it sticks, then aims a follow-up at the gap. Want to grind one level? Start the quiz and type that sub-topic as your own.
Game rules
How a round works
- 01Spawn
Press play - the AI generates Node.js questions in seconds.
- 02Level up
Answer to earn XP and build a streak. Difficulty adapts to your accuracy and speed.
- 03Learn or lose
Every answer - right or wrong - gets an AI tutor explanation. Wrong answers respawn as follow-ups.
Leaderboard
Node.js high scores
Next challenges
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Player's guide
Node.js Quiz - FAQs
Does this Node.js quiz include Express questions?
Yes - routing, middleware, request/response handling and REST API design with Express are covered along with core Node topics like the event loop and streams.
Is this quiz good for backend developer interviews?
Yes. The event loop, non-blocking I/O, streams and API design questions map directly to what Node.js backend interviews ask, and each answer is explained by the AI tutor.
Is the node.js quiz free?
Yes - completely free, with no sign-up required. Type a topic, press start, and the AI generates an adaptive Node.js quiz with an explanation for every answer.
Can teachers host this node.js quiz live for a class?
Yes - create a free teacher account, host a live room on "Node.js", and students join with a 6-character code at quff.in/join. No student accounts needed.
From the blog
Node.js guides & reading
Top Node.js Interview Questions with Answers (2026)
The event loop, async/await, streams and Express questions that decide almost every Node.js interview - each answered.
DevelopmentWhy I'm Building a Web Framework Where JavaScript Is Optional
A Bun-native framework that treats HTML as the default and JavaScript as an opt-in - 14.2 KB of JS against Astro's 193 KB and Next.js's 346 KB for the same site.
Interview PrepTop 25 JavaScript Interview Questions with Answers (2026)
Closures, hoisting, the event loop, promises and 'this' - the tricky JavaScript questions that decide frontend interviews, answered.
More programming quizzes
Ready, player?
Six adaptive Node.js questions. About two minutes. Climb the podium.