diff --git a/Sprint-3/alarmclock/alarmclock.js b/Sprint-3/alarmclock/alarmclock.js
index 6ca81cd3b..d6e9b4c54 100644
--- a/Sprint-3/alarmclock/alarmclock.js
+++ b/Sprint-3/alarmclock/alarmclock.js
@@ -1,4 +1,38 @@
-function setAlarm() {}
+let countdownInterval;
+
+function setAlarm() {
+ const input = document.getElementById("alarmSet");
+ let time = parseInt(input.value, 10);
+
+ if (isNaN(time) || time <= 0) {
+ alert("Please enter a valid number of seconds.");
+ return;
+ }
+
+ clearInterval(countdownInterval);
+
+ updateDisplay(time);
+
+ countdownInterval = setInterval(() => {
+ time--;
+
+ updateDisplay(time);
+
+ if (time <= 0) {
+ clearInterval(countdownInterval);
+ playAlarm();
+ document.body.style.backgroundColor = "purple";
+ }
+ }, 1000);
+}
+
+function updateDisplay(seconds) {
+ const mins = String(Math.floor(seconds / 60)).padStart(2, "0");
+ const secs = String(seconds % 60).padStart(2, "0");
+ document.getElementById(
+ "timeRemaining"
+ ).textContent = `Time Remaining: ${mins}:${secs}`;
+}
// DO NOT EDIT BELOW HERE
diff --git a/Sprint-3/alarmclock/index.html b/Sprint-3/alarmclock/index.html
index 48e2e80d9..ff2d3b453 100644
--- a/Sprint-3/alarmclock/index.html
+++ b/Sprint-3/alarmclock/index.html
@@ -4,7 +4,7 @@
- Title here
+ Alarm clock app