alarm.html

<!DOCTYPE html>
<html lang="en">

<!--Initialize page format-->
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="./assets/styles/alarm.css">
    <title>Clock</title>
</head>
<body>
    <section class="container">
        <!--Create display time-->
        <div id="clock"></div>
        <input onchange="setAlarmTime(this.value)" name="alarmTime" type="datetime-local">
        <!--Create buttons for setting and clearing alarm and link it to its functions in the script-->
        <div class="controls">
            <button onclick="setAlarm()" class="button set-alarm">Set alarm</button>
            <button onclick="clearAlarm()" class="button clear-alarm">Clear alarm</button>
        </div>
    </section>
    <!--Import script for alarm setting-->
    <script src="./assets/scripts/alarm.js"></script>
</body>
</html>