Quiz apps

About the project

Quiz games I built for the coding club at ARKA JAIN University in my second year, in plain JavaScript. Later, in 2024, a real-time multiplayer version where everyone plays at once.

In my second year at ARKA JAIN University I built quiz games for our college coding club: quizzes on computers, computer science, networking and operating systems, written in plain JavaScript with no framework, in July 2022.

In January 2024 I built a third one: a real-time multiplayer quiz where everyone answers the same question and watches a live leaderboard.

How it works

1. 1

   Join

   Enter a name.

2. 2

   Same question for all

   The server sends each question to every player at once.

3. 3

   Answer

   Pick an option; the server scores it.

4. 4

   Leaderboard

   Scores update live for everyone, with the top 3 highlighted.

What I did

• For the coding club: a topic picker and quizzes on computers, computer science and operating systems, built from data with plain DOM code
• A second version with one question at a time and a score screen
• A multiplayer quiz: a Socket.IO server sends each question to every player, scores answers and pushes a live leaderboard
• Deployed the front end on Netlify and the server on Render

What was new

• My first real-time app with WebSockets
• Running a front end and a server on separate hosts

Problems I hit, and how I fixed them

1. 01

   The first quiz locked a question on the first click.

   Fix The second version lets you change your answer before moving on.

Screenshots

To be clear

Known bugs I never fixed: the second quiz doesn't score its last two questions, and in the multiplayer one any player's answer moves everyone on.