Welcome to the Digital Clock with Alarm Feature, a modern and fully functional timekeeping application built entirely with front-end web technologies. This responsive web application combines elegant design with practical functionality, providing users with a comprehensive digital clock system that includes customizable alarms, timezone support, and multiple display formats. Designed with both aesthetics and usability in mind, the application features a clean interface with glass-morphism effects, smooth animations, and intuitive controls that work seamlessly across all devices—from desktop computers to mobile phones.

The application offers robust alarm management capabilities, allowing users to set multiple alarms with custom labels, toggle between 12-hour and 24-hour time formats, and switch between local time and UTC. With persistent storage that saves alarms between sessions, audio notifications, browser push alerts, and snooze functionality, this digital clock serves as a reliable daily companion for time management. Whether you need a simple time display or a comprehensive alarm system for reminders throughout your day, this application delivers both style and substance in a single, self-contained package that runs entirely in your web browser.

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Key Features:

• Real-time digital clock display with hours, minutes, and seconds

• Complete date display showing day of week, month, day, and year

• 12-hour and 24-hour time format toggle with automatic switching

• Timezone support for both local time and UTC

• Alarm system allowing users to set multiple alarms

• Custom alarm labels for easy identification

• Visual indicators for active and triggered alarms

• Snooze functionality with 10-minute delay

• Audio alarm notifications with browser sound integration

• Browser push notifications when alarms trigger

• Dark and light theme toggle for comfortable viewing

• Responsive design that works on mobile, tablet, and desktop

• Alarm persistence using localStorage to save alarms between sessions

• Visual feedback system with status notifications

• Clean, modern glass-morphism UI design with smooth animations

Technologies Used:

• HTML5 for semantic structure and content organization

• CSS3 with modern features including Flexbox, CSS Grid, and custom properties

• Vanilla JavaScript for all interactive functionality

• Font Awesome icons for visual elements and controls

• CSS animations and transitions for smooth user interactions

• Web Storage API (localStorage) for data persistence

• Web Audio API for alarm sound playback

• Web Notifications API for browser notifications

• Responsive design principles with media queries

• CSS custom properties (variables) for theming

• CSS backdrop-filter for glass-morphism effects

How to Use:

• The digital clock automatically displays current time and updates every second

• Use the “12/24 Hour” button to toggle between time formats

• Click the “Timezone” button to switch between local time and UTC

• To set an alarm, enter the hour (0–23), minute (0–59), and select AM/PM

• Optionally add a label to identify your alarm (e.g., “Wake up” or “Meeting”)

• Click “Add Alarm” to save the alarm to your active alarms list

• Active alarms appear in the alarm list with toggle and delete buttons

• Use the bell icon to enable or disable specific alarms

• Use the trash icon to permanently delete alarms

• When an alarm triggers, it will play a sound and display a notification

• Click “Snooze (10 min)” to delay the current alarm for 10 minutes

• Use the moon/sun icon in the top-right to toggle between dark and light themes

• Alarms are automatically saved and will persist when you return to the application

• On mobile devices, the interface adjusts for optimal touch interaction

• Browser notifications will appear if you grant permission when prompted

Sample Screenshots of the Project

Landing Page

How to Run?

• Download the provided source code zip file.
• Extract the downloaded zip file.
• Open the html file and you are now ready to go!

Video Demonstration for Installation/Setup:

Conclusion:

In conclusion, this Digital Clock with Alarm Feature demonstrates the power of modern web technologies to create practical, feature-rich applications that rival native software in functionality and user experience. By combining HTML for structure, CSS for sophisticated styling and responsive design, and JavaScript for dynamic interactivity and data persistence, this project serves as both a useful daily tool and an exemplary showcase of front-end development capabilities—proving that web applications can deliver comprehensive functionality, aesthetic appeal, and reliable performance entirely within the browser environment.

That's it! I hope this "Digital Clock with Alarm Feature Using HTML, CSS and JavaScript" will assist you on your  programming journey, providing value to your current and upcoming project.

For additional tutorials and free source codes, explore our website.

Enjoy Coding :>>