diff --git a/Sprint-3/alarmclock/alarmclock.js b/Sprint-3/alarmclock/alarmclock.js
index 6ca81cd3b..b9f1f1f58 100644
--- a/Sprint-3/alarmclock/alarmclock.js
+++ b/Sprint-3/alarmclock/alarmclock.js
@@ -1,4 +1,49 @@
-function setAlarm() {}
+let timer;
+
+function setAlarm() {
+ const timeSet = document.getElementById("alarmSet").value;
+ countdown(timeSet);
+}
+
+function countdown(time) {
+ clearInterval(timer);
+ let timeRemaining = time;
+ if (timeRemaining > 5999) {
+ timeRemaining = 5999;
+ }
+ updateShownTime(timeRemaining);
+
+ timer = setInterval(() => {
+ timeRemaining -= 1;
+ if (timeRemaining == 0) {
+ clearInterval(timer);
+ playAlarm();
+ }
+ updateShownTime(timeRemaining);
+ }, 1000);
+}
+
+function updateShownTime(timeRemaining) {
+ let timeRemainingOutput = document.getElementById("timeRemaining");
+ let title = document.getElementById("title");
+ const formattedTime = convertTime(timeRemaining);
+ const printedTime = printTime(formattedTime);
+ timeRemainingOutput.textContent = `Time Remaining: ${printedTime}`;
+ title.textContent = `Time Remaining: ${printedTime}`;
+}
+
+function convertTime(timeSeconds) {
+ const seconds = timeSeconds % 60;
+ const minutes = (timeSeconds - seconds) / 60;
+ console.log([minutes, seconds]);
+ return [minutes, seconds];
+}
+
+function printTime(time) {
+ const paddedHours = String(time[0]).padStart(2, "0");
+ const paddedSeconds = String(time[1]).padStart(2, "0");
+ return paddedHours + ":" + paddedSeconds;
+}
// DO NOT EDIT BELOW HERE
diff --git a/Sprint-3/alarmclock/index.html b/Sprint-3/alarmclock/index.html
index 48e2e80d9..075ae1c58 100644
--- a/Sprint-3/alarmclock/index.html
+++ b/Sprint-3/alarmclock/index.html
@@ -4,7 +4,7 @@
- Title here
+ Alarm Clock app