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London | JAN-ITP-26 | Kayanat Suleman | Sprint 3 | Alarm Clock App #969

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London | JAN-ITP-26 | Kayanat Suleman | Sprint 3 | Alarm Clock App #969

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ddb79fc
Updating index.html - with an accurate title
KayanatSuleman Feb 26, 2026
61fe419
Alarm clock: display entered time in mm:ss format
KayanatSuleman Feb 27, 2026
7cafbef
Alarm clock: start timer with setInterval every 1000ms
KayanatSuleman Feb 27, 2026
6b24f06
Alarm clock: decrement and update heading each second
KayanatSuleman Feb 27, 2026
eb90347
Alarm clock: play alarm and stop timer at 00:00
KayanatSuleman Feb 27, 2026
5d17875
Updating the app as per the review comments
KayanatSuleman Mar 4, 2026
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48 changes: 47 additions & 1 deletion Sprint-3/alarmclock/alarmclock.js
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Original file line number Diff line number Diff line change
@@ -1,4 +1,50 @@
function setAlarm() {}
let intervalId = null;

function formatTime(totalSeconds) {
const minutes = Math.floor(totalSeconds / 60);
const seconds = totalSeconds % 60;

const formattedMinutes = String(minutes).padStart(2, "0");
const formattedSeconds = String(seconds).padStart(2, "0");

return `${formattedMinutes}:${formattedSeconds}`;
}

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

let value = input.value

if (value === "") {
return;
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@A-O-Emmanuel A-O-Emmanuel Mar 5, 2026

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Instead of returning it will be better to show the user an appropriate message, can you think of a way to do that please.

}

let remainingSeconds = Number(value);

if (remainingSeconds <= 0 || isNaN(remainingSeconds)) {
return;
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@A-O-Emmanuel A-O-Emmanuel Mar 5, 2026

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Also instead of returning, it will be better you show the user an appropriate message, think of a way to do that.

}

heading.innerText = `Time Remaining: ${formatTime(remainingSeconds)}`;

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

intervalId = setInterval(() => {
remainingSeconds -= 1;

if (remainingSeconds <= 0) {
heading.innerText = `Time Remaining: ${formatTime(0)}`;
playAlarm();
clearInterval(intervalId);
intervalId = null;
return;
}
heading.innerText = `Time Remaining: ${formatTime(remainingSeconds)}`;
}, 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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