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Brussels | ITP-2026-1 | Nik | Week 9 | Sprint 3 - Alarm Clock #129

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Brussels | ITP-2026-1 | Nik | Week 9 | Sprint 3 - Alarm Clock #129

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39 changes: 38 additions & 1 deletion Sprint-3/alarmclock/alarmclock.js
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Original file line number Diff line number Diff line change
@@ -1,4 +1,41 @@
function setAlarm() {}
// store interval ID so we can stop it later
let alarmInterval = null;
const heading = document.getElementById("timeRemaining");
const input = document.getElementById("alarmSet");
const button = document.getElementById("set");

function setAlarm() {
// get the input value (in seconds)
let secondsRemaining = parseInt(input.value);

// function to format seconds as MM:SS
function formatTime(seconds) {
const minutes = Math.floor(seconds / 60);
const secs = seconds % 60;
// padStart(2, '0') adds leading zero if needed: 5 becomes '05'
return `Time Remaining: ${String(minutes).padStart(2, "0")}:${String(secs).padStart(2, "0")}`;
}

// update heading immediately with initial value
heading.textContent = formatTime(secondsRemaining);

// clear any existing alarm before starting new one
if (alarmInterval) {
clearInterval(alarmInterval);
}

// start countdown: every 1000 milliseconds = 1 sec
alarmInterval = setInterval(() => {
secondsRemaining--;
heading.textContent = formatTime(secondsRemaining);

// when timer reaches zero - play alarm and stop interval
if (secondsRemaining === 0) {
clearInterval(alarmInterval);
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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