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London | 26-ITP-Jan | Oussama Mouggal | Sprint 3 | Alarm clock #1062

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London | 26-ITP-Jan | Oussama Mouggal | Sprint 3 | Alarm clock #1062

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fc866d9
changed the title
Oussama-Mouggal Mar 21, 2026
7e51a22
Implement alarm countdown functionality in setAlarm()
Oussama-Mouggal Mar 21, 2026
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42 changes: 41 additions & 1 deletion Sprint-3/alarmclock/alarmclock.js
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Original file line number Diff line number Diff line change
@@ -1,4 +1,44 @@
function setAlarm() {}
let countdownTimerId = null;

function setAlarm() {
const heading = document.getElementById("timeRemaining");
const input = document.getElementById("alarmSet");

let remainingSeconds = Number(input.value);

if (!Number.isFinite(remainingSeconds) || remainingSeconds < 0) {
remainingSeconds = 0;
}

remainingSeconds = Math.floor(remainingSeconds);

if (countdownTimerId !== null) {
clearInterval(countdownTimerId);
}

const updateHeading = () => {
const minutes = Math.floor(remainingSeconds / 60)
.toString()
.padStart(2, "0");
const seconds = (remainingSeconds % 60).toString().padStart(2, "0");
heading.innerText = `Time Remaining: ${minutes}:${seconds}`;
};

updateHeading();

countdownTimerId = setInterval(() => {
if (remainingSeconds > 0) {
remainingSeconds -= 1;
updateHeading();
}

if (remainingSeconds === 0) {
clearInterval(countdownTimerId);
countdownTimerId = null;
playAlarm();
}
}, 1000);
}

// DO NOT EDIT BELOW HERE

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2 changes: 1 addition & 1 deletion Sprint-3/alarmclock/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" href="style.css" />
<title>Title here</title>
<title>Alarm clock app</title>
</head>
<body>
<div class="centre">
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