Technology Stack:

• Frontend: HTML, CSS, Bootstrap, JavaScript

• Backend (optional): PHP / Node.js / Java (if storing time logs)

Project Overview:

The Online Stopwatch is a web-based timer application that allows users to start, stop, reset, and record lap times. It’s useful for workouts, study sessions, cooking, games, and other time-based activities.

It mimics the behavior of a real stopwatch but in a browser-friendly interface. The core logic is handled on the frontend using JavaScript, and you can optionally store lap data or logs using a backend with a database.

Key Features:

1. Start / Stop Functionality:

   • Users can start and stop the timer easily.

   • Button toggles between “Start” and “Stop.”

2. Reset Button:

   • Clears the time and resets it to 00:00:00.

3. Lap Timer:

   • Records current time when "Lap" button is pressed.

   • Displays a list of lap records with timestamps.

4. Responsive Design:

   • Mobile and desktop-friendly using Bootstrap.

5. Optional Backend Features:

   • Save lap history per user (using PHP/Node.js/Java + MySQL).

   • User login and personalized stopwatch history.

6. Sound or Alert (optional):

   • Play sound when timer hits a set duration (e.g., 30 minutes).

Modules & Components:

• Timer Display Panel: Shows HH:MM:SS in real-time.

• Control Buttons: Start, Stop, Reset, Lap.

• Lap Log Section: Display recorded laps.

• Optional Login System: For saving session history.

Learning Outcomes:

• JavaScript DOM manipulation and event handling.

• Working with setInterval() and time-based logic.

• Basic responsive UI design with Bootstrap.

• Optional backend integration for data persistence.