diff --git a/Sprint-3/alarmclock/alarmclock.js b/Sprint-3/alarmclock/alarmclock.js
index 6ca81cd3b..9dc7d4d51 100644
--- a/Sprint-3/alarmclock/alarmclock.js
+++ b/Sprint-3/alarmclock/alarmclock.js
@@ -1,4 +1,53 @@
-function setAlarm() {}
+const input = document.getElementById("alarmSet");
+const timeDisplay = document.querySelector("span");
+
+let alarmInterval = null;
+
+function setAlarm() {
+ // sanitize input: convert to number, floor to integer seconds, clamp to >= 0
+ let timeInput = Math.floor(Number(input.value) || 0);
+ if (timeInput < 0) timeInput = 0;
+
+ // clear any existing interval so multiple clicks don't create multiple timers
+ if (alarmInterval) {
+ clearInterval(alarmInterval);
+ alarmInterval = null;
+ }
+
+ // handle negative input explicitly
+ const rawValue = Number(input.value);
+ if (rawValue < 0) {
+ timeDisplay.textContent = "Invalid value";
+ return;
+ }
+
+ let minutes = Math.floor(timeInput / 60);
+ let seconds = timeInput % 60;
+
+ minutes = minutes.toString().padStart(2, "0");
+ seconds = seconds.toString().padStart(2, "0");
+ timeDisplay.textContent = `${minutes}:${seconds}`;
+
+ // if the input is 0, trigger the alarm immediately
+ if (timeInput <= 0) {
+ playAlarm();
+ return;
+ }
+
+ alarmInterval = setInterval(() => {
+ timeInput--;
+ let remainingMinutes = Math.floor(timeInput / 60);
+ let remainingSeconds = timeInput % 60;
+ remainingMinutes = remainingMinutes.toString().padStart(2, "0");
+ remainingSeconds = remainingSeconds.toString().padStart(2, "0");
+ timeDisplay.textContent = `${remainingMinutes}:${remainingSeconds}`;
+ if (timeInput <= 0) {
+ playAlarm();
+ clearInterval(alarmInterval);
+ alarmInterval = null;
+ }
+ }, 1000);
+}
// DO NOT EDIT BELOW HERE
@@ -20,6 +69,11 @@ function playAlarm() {
function pauseAlarm() {
audio.pause();
+ audio.currentTime = 0;
+ if (alarmInterval) {
+ clearInterval(alarmInterval);
+ alarmInterval = null;
+ }
}
window.onload = setup;
diff --git a/Sprint-3/alarmclock/index.html b/Sprint-3/alarmclock/index.html
index 48e2e80d9..6e5d06868 100644
--- a/Sprint-3/alarmclock/index.html
+++ b/Sprint-3/alarmclock/index.html
@@ -1,20 +1,19 @@
-
-
-
-
- Title here
-
-
-
-
Time Remaining: 00:00
-
-
-
-
-
-
-
-
+
+
+
+
+ Alarm clock app
+
+
+
+
Time Remaining: 00:00
+
+
+
+
+
+
+