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Sheffield | 26-ITP-Jan | Martha Ogunbiyi | Sprint 3| Alarm clock #1167

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Sheffield | 26-ITP-Jan | Martha Ogunbiyi | Sprint 3| Alarm clock #1167

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ed3d3cc
update html title, convert input value to time format and set dynamic…
marthak1 Apr 3, 2026
0d11d74
changed html title using js queryselector
marthak1 Apr 3, 2026
44f98d7
update alarm logic and removed unused comments
marthak1 Apr 3, 2026
8c9db65
update htlm title in html file
marthak1 Apr 6, 2026
2a0eef7
function updated to disallow multiple timers and validate input
marthak1 Apr 6, 2026
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52 changes: 51 additions & 1 deletion Sprint-3/alarmclock/alarmclock.js
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Original file line number Diff line number Diff line change
@@ -1,4 +1,54 @@
function setAlarm() {}
function time_convert(num) {
let minutes = Math.floor((num % 3600) / 60);
let seconds = num % 60;
return minutes.toString().padStart(2, '0') + ":" + seconds.toString().padStart(2, '0');
}
let currentInterval = null;

function setup() {
document.getElementById("set").addEventListener("click", setAlarm);
document.getElementById("stop").addEventListener("click", pauseAlarm);
}

function setAlarm() {
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@Luro91 Luro91 Apr 4, 2026

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What happens when a user clicks the set alarm button while the countdown is already running?

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@marthak1 marthak1 Apr 6, 2026

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Thanks for the feedback. Function has now been updated to stop multiple timers

if (currentInterval !== null) return;

const alarmSetInputEl = document.getElementById("alarmSet");
let timeEl = Number(alarmSetInputEl.value);
if (!Number.isFinite(timeEl) || timeEl <= 0) {
alert("Please enter a valid number greater than 0");
return;
}
const timeRemainingCounterEl = document.getElementById("timeRemaining");
const button = document.getElementById("set");

button.disabled = true;

currentInterval = setInterval(() => {
timeEl--;

timeRemainingCounterEl.textContent = `Time Remaining: ${time_convert(timeEl)}`;

if (timeEl <= 0) {
clearInterval(currentInterval);
currentInterval = null;

timeRemainingCounterEl.textContent = "Done!";
playAlarm();
button.disabled = false;
}
}, 1000);
}

function pauseAlarm() {
if (currentInterval !== null) {
clearInterval(currentInterval);
currentInterval = null;

document.getElementById("set").disabled = false;
}
}


// DO NOT EDIT BELOW HERE

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3 changes: 2 additions & 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">
Expand All @@ -18,3 +18,4 @@ <h1 id="timeRemaining">Time Remaining: 00:00</h1>
<script src="alarmclock.js"></script>
</body>
</html>

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