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London | 25-ITP-Sep | Sophia Mohamed| Sprint 3 | Alarm Clock #877

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London | 25-ITP-Sep | Sophia Mohamed| Sprint 3 | Alarm Clock #877

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6b2d305
updated the title in the index file
saff-coder Nov 20, 2025
43bd81b
i completed my alarm clock functions
saff-coder Nov 22, 2025
64de8d0
updated the function in the alarm clock
saff-coder Nov 23, 2025
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88 changes: 87 additions & 1 deletion Sprint-3/alarmclock/alarmclock.js
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Original file line number Diff line number Diff line change
@@ -1,4 +1,90 @@
function setAlarm() {}
// Keep track of the countdown
let countdownId = null;
let remainingSeconds = 0;

// Turn seconds into "mm:ss"
function formatTime(totalSeconds) {
const minutes = Math.floor(totalSeconds / 60);
const seconds = totalSeconds % 60;

const minutesString = String(minutes).padStart(2, "0");
const secondsString = String(seconds).padStart(2, "0");

return `${minutesString}:${secondsString}`;
}

// Update the text at the top: "Time Remaining: mm:ss"
function updateTimeDisplay() {
const titleElement = document.getElementById("timeRemaining");
if (!titleElement) return; // safety check
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@jaymes15 jaymes15 Nov 23, 2025

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Good defensive programming


titleElement.textContent = `Time Remaining: ${formatTime(remainingSeconds)}`;
}

// Called when you click the "Set Alarm" button
function setAlarm() {
const input = document.getElementById("alarmSet");
if (!input) return;

const seconds = Number(input.value);


// Ignore invalid or non-positive numbers
if (Number.isNaN(seconds) || seconds <= 0) {
return;
}

// If a countdown is already running, stop it first
if (countdownId !== null) {
clearInterval(countdownId);
countdownId = null;
}

remainingSeconds = seconds;
updateTimeDisplay();

// Start a new countdown
countdownId = setInterval(() => {
remainingSeconds -= 1;
updateTimeDisplay();

if (remainingSeconds <= 0) {
// Make sure we end at 00:00
remainingSeconds = 0;
updateTimeDisplay();
document.body.style.backgroundColor = "red";
// Stop the interval
clearInterval(countdownId);
countdownId = null;

// Play the alarm sound
playAlarm();

}
}, 1000);
}

// Called when you click the "Stop Alarm" button
function stopAlarm() {
// Stop the countdown if it is running
if (countdownId !== null) {

clearInterval(countdownId);
countdownId = null;

}

// Reset the time to 0 and update the display
remainingSeconds = 0;
updateTimeDisplay();

// Try to stop the audio (this assumes there is an <audio id="alarmAudio">)
const audio = document.getElementById("alarmAudio");
if (audio) {
audio.pause();
audio.currentTime = 0;
}
}

// 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></title>Alarm clock app</title>
</head>
<body>
<div class="centre">
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