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London | May-2025 | Ikenna Agulobi | Data Groups |Sprint-3 Alarm Clock #686

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London | May-2025 | Ikenna Agulobi | Data Groups |Sprint-3 Alarm Clock #686

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cda92cc
changed project title to Alarm clock app
ike-agu Jul 21, 2025
89f1b9e
I've implemneted alarm clock app to query the HTML selector and displ…
ike-agu Jul 21, 2025
a8ffcad
fixed setAlarm function to decrease after every second and play sound…
ike-agu Jul 21, 2025
46ee805
added bg color fuction and input validation for input field
ike-agu Jul 21, 2025
b37a24d
Added inline comments for better code understanding
ike-agu Jul 23, 2025
759a6a2
Removed console.log statements and unnecessary comments
ike-agu Jul 25, 2025
15af47a
fixed alarm clock background to revert to white when stop alarm is cl…
ike-agu Jul 29, 2025
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61 changes: 60 additions & 1 deletion Sprint-3/alarmclock/alarmclock.js
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Hi Ikenna, code looks good and it works as intended. For a better user experience, it would be nicer if the background colour change back to white once Stop alarm is clicked. Can you implement this code? If you want to complete the task from here, it's totally fine too. Let me know!

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Hi @day-lee, I've implemented the change request. Could you take a look when you are available. Thank you!

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Looks good! :)

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Thank you for your review and feedback!

Original file line number Diff line number Diff line change
@@ -1,4 +1,62 @@
function setAlarm() {}
let timer; //to store the setInterval and use it to clearInterval.
let timerPaused; //to check if timer is currently paused
let secondsLeft = 0; //to keep track of how many seconds left in the countdown

//this function is to start the alarm countdown
function setAlarm() {
//stores user input
let userInput = document.querySelector("#alarmSet");
secondsLeft = parseInt(userInput.value); //converts user input to a num

if (isNaN(secondsLeft) || secondsLeft <= 0) {
alert("Your input is not valid!");
return; // this stops execution if input is invalid
}

updateTheDisplay(secondsLeft); // this immediately displays the initial time on the screen
//setinterval() starts a timer that runs every 1000ms(1 second)
timer = setInterval(() => {
if (!timerPaused) {
secondsLeft--; //if timer is not pause, decrease the timer by 1
}

updateTheDisplay(secondsLeft);//this changes the timer countdown each second

if (secondsLeft <= 0) {
clearInterval(timer); //stops the timer from running
playAlarm();
backGroundColor("#ADD8E6");
userInput.value = ""; //this clears the input field
}
}, 1000);
}

//function for bg color when alarm goes off
function backGroundColor(color) {
document.body.style.backgroundColor = color;
}

// function for updating the display
function updateTheDisplay(seconds) {
const minutesDisplayed = Math.floor(seconds / 60); //get full minutes
const secondsDisplayed = seconds % 60; //get full seconds
// Format minutes and seconds as "mm:ss"
let minutesAndSeconds = `${String(minutesDisplayed).padStart(2,"0")}:${String(secondsDisplayed).padStart(2, "0")}`;
const timeLeft = document.querySelector("#timeRemaining");
timeLeft.innerText = `Time Remaining: ${minutesAndSeconds}`;
}

//function for adding pause and resume
function pauseTheCountDown() {
document.getElementById("pause").addEventListener("click", () => {
timerPaused = !timerPaused; // this is to toggle btw the pause state
const btn = document.getElementById("pause");
btn.textContent = timerPaused ? "Resume" : "Pause";
});
}
pauseTheCountDown();// Run the pause setup function so that the btn can work



// DO NOT EDIT BELOW HERE

Expand All @@ -11,6 +69,7 @@ function setup() {

document.getElementById("stop").addEventListener("click", () => {
pauseAlarm();
backGroundColor("white");
});
}

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4 changes: 2 additions & 2 deletions Sprint-3/alarmclock/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -4,16 +4,16 @@
<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">
<h1 id="timeRemaining">Time Remaining: 00:00</h1>
<label for="alarmSet">Set time to:</label>
<input id="alarmSet" type="number" />

<button id="set" type="button">Set Alarm</button>
<button id="stop" type="button">Stop Alarm</button>
<button id="pause" type="button">Pause Alarm</button>
</div>
<script src="alarmclock.js"></script>
</body>
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