diff --git a/Sprint-3/alarmclock/alarmclock.js b/Sprint-3/alarmclock/alarmclock.js
index 6ca81cd3b..e6e5c9c97 100644
--- a/Sprint-3/alarmclock/alarmclock.js
+++ b/Sprint-3/alarmclock/alarmclock.js
@@ -1,4 +1,50 @@
-function setAlarm() {}
+let intervalId = null;
+
+function formatTime(totalSeconds) {
+ const minutes = Math.floor(totalSeconds / 60);
+ const seconds = totalSeconds % 60;
+
+ const formattedMinutes = String(minutes).padStart(2, "0");
+ const formattedSeconds = String(seconds).padStart(2, "0");
+
+ return `${formattedMinutes}:${formattedSeconds}`;
+}
+
+function setAlarm() {
+ const input = document.getElementById("alarmSet");
+ const heading = document.getElementById("timeRemaining");
+
+ let value = input.value
+
+ if (value === "") {
+ return;
+ }
+
+ let remainingSeconds = Number(value);
+
+ if (remainingSeconds <= 0 || isNaN(remainingSeconds)) {
+ return;
+ }
+
+ heading.innerText = `Time Remaining: ${formatTime(remainingSeconds)}`;
+
+ if (intervalId !== null) {
+ clearInterval(intervalId);
+ }
+
+ intervalId = setInterval(() => {
+ remainingSeconds -= 1;
+
+ if (remainingSeconds <= 0) {
+ heading.innerText = `Time Remaining: ${formatTime(0)}`;
+ playAlarm();
+ clearInterval(intervalId);
+ intervalId = null;
+ return;
+ }
+ heading.innerText = `Time Remaining: ${formatTime(remainingSeconds)}`;
+ }, 1000);
+}
// DO NOT EDIT BELOW HERE
diff --git a/Sprint-3/alarmclock/index.html b/Sprint-3/alarmclock/index.html
index 48e2e80d9..4a91379d3 100644
--- a/Sprint-3/alarmclock/index.html
+++ b/Sprint-3/alarmclock/index.html
@@ -4,7 +4,7 @@
- Title here
+ Alarm Clock App