An interactive coding quiz that challenges what you know — and how fast you know it.
DevQuiz is a fast-paced, multi-language coding quiz app built to sharpen your programming fundamentals under pressure. Pick your language, pick your difficulty, and race the clock.
- 💻 4 Language Tracks — JavaScript, Python, HTML/CSS, and General CS
- 📊 3 Difficulty Levels — Beginner, Intermediate, Advanced
- ⏱️ 20-Second Timer Per Question — auto-advances when time runs out
- 📈 Live Progress Bar — always know how far you are in the quiz
- ✅ Instant Feedback — see the correct answer immediately after each response
- 🔊 Sound Effects — satisfying audio cues for correct and incorrect answers
- 🏆 Final Score Screen — score, time taken, and a performance message
- 🔁 Retry & Share — retake the quiz or share your score with one click
- 📱 Fully Responsive — optimized for mobile, tested down to 375px width
| Technology | Usage |
|---|---|
| HTML5 | Structure |
| CSS3 | Styling, glassmorphism UI, animations |
| Vanilla JavaScript | Quiz logic, timer, scoring |
| Web Audio API | Correct/incorrect sound effects |
| Google Fonts | Typography (Space Grotesk) |
| Vercel | Deployment & hosting |
No installation required. Just clone and open.
# Clone the repository
git clone https://github.com/RzDevCode/devquiz-app.git
# Navigate into the project
cd devquiz-app
# Open in your browser
open index.htmlOr simply download the index.html file and open it in any browser.
devquiz-app/
└── index.html # Complete app — HTML, CSS, and JS in one file
- Global leaderboard using a free backend (Supabase/Firebase)
- More question categories — SQL, React, DevOps basics
- Daily challenge mode — one quiz, one shot, every day
- User accounts to track progress over time
- AI-generated questions via Claude/OpenAI API
Rayhan Zaidi GitHub: @RzDevCode
This project is open source and available under the MIT License.