Digital Clock in JavaScript | Source Code

1 min readJun 29, 2024

HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>My website</title>
    <link rel="stylesheet" href="styles.css">
</head>
<body>
   
        <div id="clockcontainer">
            <div id="clock">00:00:00</div>
        </div>

       






    <script src="script.js"></script>
</body>
</html>

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CSS


body{
    margin: 0;
    /* background: rgb(131,58,180);
    background: linear-gradient(90deg, rgba(131,58,180,1) 0%, rgba(253,29,29,1) 50%, rgba(252,176,69,1) 100%); */
    background-image: url(https://img.freepik.com/free-vector/dark-background-gradient-geometric-shapes_23-2148430297.jpg?size=626&ext=jpg&ga=GA1.1.1482922746.1719308886&semt=ais_user);
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
}
#clockcontainer{
    height: 70vh;
    width: 100vh;
    margin: auto;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 100px;

    /* From https://css.glass */
    background: rgba(255, 255, 255, 0.196);
    border-radius: 16px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(12.8px);
    -webkit-backdrop-filter: blur(12.8px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

#clock{
    font-family: sans-serif;
    font-size: 5.5rem;
    font-weight: bold;
    text-align: center;
    color: white;
}

JavaScript


function updateClock(){

    const now = new Date();

    let hours = now.getHours();

    const meridiem = hours > 12 ? "PM" : "AM";

    hours = hours % 12 || 12;

    hours = hours.toString().padStart(2,0)

    const minutes = now.getMinutes().toString().padStart(2,0);
    const seconds = now.getSeconds().toString().padStart(2,0);

    const timeString = `${hours}:${minutes}:${seconds} ${meridiem}`;

    document.getElementById("clock").textContent = timeString;
}

updateClock();

setInterval(updateClock,1000);