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Digital clock #176

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c260ccb
digital clock implementation
shriom17 Dec 27, 2025
4e99782
small fix
shriom17 Dec 27, 2025
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64 changes: 64 additions & 0 deletions entries/digital-clock.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta name = "description" content="A simple digital clock with timezone selection feature.">
<meta name="author" content="Shrioma Pal">
<meta name="github" content="shriom17">
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Digital Clock</title>
</head>
<body>
<div class="container">
<h4>Welcome To Your Digital Clock</h4>
<h5>Select Your Timezone</h5>
<select id="timezone-select">
<option value="UTC">UTC</option>
<option value="America/New_York">New York (UTC-5)</option>
<option value="Europe/London">London (UTC+0)</option>
<option value="Asia/Kolkata">India (UTC+5:30)</option>
<option value="Australia/Sydney">Sydney (UTC+11)</option>
</select>
<h2 id="clock">00:00:00</h2>
</div>
<style>
body {
font-family: Arial, sans-serif;
text-align: center;
margin-top: 50px;
color:aquamarine;
}
#clock {
font-size: 48px;
margin-top: 20px;
}
select {
font-size: 16px;
padding: 5px;
}
.container {
display: inline-block;
padding: 20px;
border: 2px solid #e3e1e1;
border-radius: 10px;
background-color: #211b1b;
}
</style>
<script>
const clockElement = document.getElementById('clock');
const timezoneSelect = document.getElementById('timezone-select');

function updateClock() {
const selectedTimezone = timezoneSelect.value;
const options = { timeZone: selectedTimezone, hour12: false, hour: '2-digit', minute: '2-digit', second: '2-digit' };
const formatter = new Intl.DateTimeFormat([], options);
const timeString = formatter.format(new Date());
clockElement.textContent = timeString;
}

timezoneSelect.addEventListener('change', updateClock);
setInterval(updateClock, 1000);
updateClock(); // Initial call to display the time immediately
</script>
</body>
</html>