diff --git a/Sprint-3/alarmclock/alarmclock.js b/Sprint-3/alarmclock/alarmclock.js
index 6ca81cd3b..2b07dd67b 100644
--- a/Sprint-3/alarmclock/alarmclock.js
+++ b/Sprint-3/alarmclock/alarmclock.js
@@ -1,4 +1,45 @@
-function setAlarm() {}
+function setAlarm(){
+ const input = document.getElementById("alarmSet");
+ const heading = document.getElementById("timeRemaining");
+
+ let seconds = parseInt(input.value, 10);
+ if (!Number.isFinite(seconds) || seconds < 0) seconds = 0;
+
+ function formatMMSS(s) {
+ const mm = Math.floor(s / 60)
+ .toString()
+ .padStart(2, "0");
+ const ss = (s % 60).toString().padStart(2, "0");
+ return `Time Remaining: ${mm}:${ss}`;
+ }
+
+ heading.innerText = formatMMSS(seconds);
+
+ if (window._alarmIntervalId) {
+ clearInterval(window._alarmIntervalId);
+ window._alarmIntervalId = null;
+ }
+
+ // If it's already zero, play immediately and don't start an interval
+ if (seconds === 0) {
+ playAlarm();
+ return;
+ }
+
+ window._alarmIntervalId = setInterval(() => {
+ seconds -= 1;
+
+ if (seconds > 0) {
+ heading.innerText = formatMMSS(seconds);
+ } else {
+ // Ensure the heading shows 00:00, stop the interval and play the alarm once
+ heading.innerText = formatMMSS(0);
+ clearInterval(window._alarmIntervalId);
+ window._alarmIntervalId = null;
+ playAlarm();
+ }
+ }, 1000);
+}
// DO NOT EDIT BELOW HERE
diff --git a/Sprint-3/alarmclock/index.html b/Sprint-3/alarmclock/index.html
index 48e2e80d9..da540358f 100644
--- a/Sprint-3/alarmclock/index.html
+++ b/Sprint-3/alarmclock/index.html
@@ -4,7 +4,8 @@
- Title here
+ Alarm Clock App
+
@@ -15,6 +16,5 @@
Time Remaining: 00:00
-