diff --git a/Sprint-3/alarmclock/alarmclock.js b/Sprint-3/alarmclock/alarmclock.js
index 6ca81cd3b..5fdf7ee3d 100644
--- a/Sprint-3/alarmclock/alarmclock.js
+++ b/Sprint-3/alarmclock/alarmclock.js
@@ -1,4 +1,33 @@
-function setAlarm() {}
+let remainingSeconds = 0;
+let intervalId;
+
+function formatTime(totalSeconds) {
+ const minutes = Math.floor(totalSeconds / 60).toString().padStart(2, "0");
+ const seconds = Math.floor(totalSeconds % 60).toString().padStart(2, "0");
+ return `${minutes}:${seconds}`;
+}
+function setAlarm() {
+ clearInterval(intervalId);
+
+ const initialSeconds = Number(document.getElementById("alarmSet").value);
+ const timeRemainingHeading = document.getElementById("timeRemaining");
+ if (!initialSeconds || initialSeconds <= 0) {
+ timeRemainingHeading.innerText = "Please enter a positive number of seconds";
+ return;
+}
+ remainingSeconds = initialSeconds;
+
+ timeRemainingHeading.innerText = `Time Remaining: ${formatTime(remainingSeconds)}`;
+
+ intervalId = setInterval(() => {
+ remainingSeconds--;
+ timeRemainingHeading.innerText = `Time Remaining: ${formatTime(remainingSeconds)}`;
+ if (remainingSeconds === 0) {
+ clearInterval(intervalId);
+ playAlarm();
+ }
+ }, 1000);
+}
// DO NOT EDIT BELOW HERE
diff --git a/Sprint-3/alarmclock/index.html b/Sprint-3/alarmclock/index.html
index 48e2e80d9..1e824a97b 100644
--- a/Sprint-3/alarmclock/index.html
+++ b/Sprint-3/alarmclock/index.html
@@ -4,7 +4,8 @@
- Title here
+ Alarm clock app
+