Countdown Timer using HTML, CSS & JavaScript ⏰
In this video, I built a fully functional Countdown Timer using pure HTML, CSS, and JavaScript.
The focus of this project was handling date-based calculations, interval control, and dynamic UI updates. Unlike a simple stopwatch, a countdown timer requires computing the difference between the current time and a selected future date — and updating the UI every second accurately.
Features:
Select custom date and time
Start, Stop, and Reset controls
Live countdown display
Displays selected target date & time
Fully responsive UI
Tech Stack:
HTML – layout structure
CSS – minimal and responsive styling
JavaScript (ES6+) – time difference calculations and interval handling
Live - https://countdown-timer-navy-chi.verc...
Github - https://github.com/surajprojects/time...
What I focused on:
Calculating time differences correctly
Managing setInterval without duplication bugs
Handling edge cases (past dates, reset behavior)
Updating UI in real-time
Keeping logic modular and readable
This project is part of my build-in-public journey, where I share real-world projects and practical frontend logic as I grow toward full-stack development.
If you're strengthening your JavaScript fundamentals and learning how time-based logic works in real applications, this one’s for you.
On this page of the site you can watch the video online Countdown Timer using HTML, CSS & JavaScript ⏰ with a duration of hours minute second in good quality, which was uploaded by the user Tiger Insights 03 March 2026, share the link with friends and acquaintances, this video has already been watched 3 times on youtube and it was liked by 2 viewers. Enjoy your viewing!
