Brief Description:
This is a fully interactive web-based quiz application designed to test users' programming knowledge across three difficulty levels: Easy, Medium, and Hard. The app delivers a dynamic and engaging experience using vanilla JavaScript, HTML, and CSS, with features like random question selection, countdown timers, real-time feedback with explanations, and score calculation.
Project Objectives:
Assess users' understanding of programming concepts in a fun and interactive way.
Provide a clear structure for learning through difficulty levels.
Offer immediate feedback to enhance learning with explanation for each answer.
Technologies Used:
HTML5 – for building the structure of the application.
CSS3 – for responsive styling and theme management (Light & Dark mode).
JavaScript (Vanilla) – for all the core logic, dynamic DOM manipulation, timer control, question randomization, and user interaction.
Core Features:
Three difficulty levels: Easy, Medium, and Hard.
Each level loads 5 random programming questions from a larger question pool.
Built-in timer:
Easy: No timer.
Medium: 30 seconds per question.
Hard: 15 seconds per question.
Instant feedback after each answer with explanation.
Displays correct and incorrect answers with visual cues.
Final results screen with score summary.
Ability to restart the quiz or select another difficulty.
Smooth user flow without page reloads.
Smart Programming Techniques:
getRandomQuestions() function with shuffle logic using .sort() and Math.random().
Efficient use of setInterval and clearInterval for time tracking.
Use of modern JavaScript methods like the spread operator (...), .map(), and conditional rendering.
Responsive event handling for answer selection and navigation.
Clean separation of questions by difficulty levels via arrays (easyQuestions, mediumQuestions, hardQuestions).
Future Enhancements:
Leaderboard and score history.
User login to track progress.
Admin panel to manage questions (add/edit/delete).
More categories: JavaScript, Python, Algorithms, Web Development, etc