JavaScript Quiz
Check your JS knowledge by having fun.
FreeCode20,589 impressions#24 of its week10 comments
Comments
>log in to comment- Madza· 3y ago
Congrats Marko, great way to start the year!
- Rodrigo Rocco· 3y ago
Congrats Marko!
- Roberto Robles· 3y ago
Looks interesting, congrats!
- Dunsin· 3y ago
Looks fun and challenging Marko, is this open source?
- Marcel Cruz· 3y ago
Great resource to up JS skills!! Best of luck, Marko!
- Frank Eno· 3y ago
Great tool to improve your JS skills, congrats and good luck Marko!
- Peter Mick· 3y ago
Congrats on the launch Marko! Javascript in itself is fun already and this quiz takes it to next level of fun! 😁
- Csaba Kissi· 3y ago
Perfect for anybody who wants to improve their Javascript skills.
- Musharof Chowdhury· 3y ago
Interesting resource for javascript learners, thanks for creating this!
- Devluc· 3y ago
Great way to brush up those JS skills. Supported. Good luck with the launch
JavaScript Quiz is a free interactive tool that tests JavaScript knowledge with 10 random questions and detailed explanations.
- for
- Beginners and experienced developers preparing for JavaScript interviews
- pricing
- free
Key features
- Random question set — Each round presents 10 randomly selected questions from a curated bank.
- Detailed explanations — After answering, click an info button to view why the answer is correct.
- No account required — Use the quiz instantly without sign-up or cost.
- Broad topic coverage — Covers coercion, equality, closures, prototype chain, event loop, async/await, hoisting, scoping, and more.
- Shuffled each round — Questions are reshuffled every session for a fresh experience.
Use cases
- Practice JavaScript fundamentals before an interview
- Refresh knowledge of language quirks and edge cases
- Teach junior developers core concepts through interactive quizzes
- Identify gaps in understanding of async/await and the event loop
JavaScript Quiz vs alternatives
 JavaScript Quiz |  Ninja Talent |  Avocado Coding Challenge | .png?width=64){kind=icon} DirectoryKit |  Saas UI | |
|---|---|---|---|---|---|
| Best for | Randomized JS quizzes with explanations | Skill assessment and certification | Frontend coding challenges | Launching directory sites | UI component library |
| Pricing | Free | One time fee | Free | One time fee | Free |
| DevHunt upvotes | 24 | 76 | 24 | 163 | 54 |
| Launched | Jan 2023 | Mar 2024 | Feb 2024 | Jan 2023 | Jan 2023 |
- JavaScript Quiz vs Ninja Talent: Focuses on evaluating and certifying software skills rather than interactive quizzes
- JavaScript Quiz vs Avocado Coding Challenge: Provides coding challenges to boost frontend skills, not quiz-style Q&A
- JavaScript Quiz vs DirectoryKit: Helps build directory websites; unrelated to JavaScript knowledge testing
- JavaScript Quiz vs Saas UI: A React component library, not a learning or quiz tool
JavaScript Quiz FAQ
Do I need to create an account to use JavaScript Quiz?+
No, the quiz works without any sign-up or account creation.
How many questions are shown per round?+
Each round displays 10 random questions.
Can I see why an answer is correct?+
Yes, after answering you can click the info button to read a detailed explanation.
Is there any cost to use the quiz?+
The tool is completely free to use.
What topics does the quiz cover?+
It includes type coercion, equality, closures, prototype chains, the event loop, async/await, hoisting, scoping, array/object quirks, operator behavior, NaN, floating point arithmetic, template literals, and more.
Summarized by DevHunt from javascriptquiz.com · Sep 27, 2026. Details may change; check the official site.
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