diff --git a/Sprint-3/alarmclock/alarmclock.js b/Sprint-3/alarmclock/alarmclock.js
index 6ca81cd3b..c3fa8764b 100644
--- a/Sprint-3/alarmclock/alarmclock.js
+++ b/Sprint-3/alarmclock/alarmclock.js
@@ -1,5 +1,58 @@
-function setAlarm() {}
+// ## How the clock should work
+// When you click the `Set Alarm` button the counter at the top of the screen should change to the number you entered in the `input` field. For example, if the `input` field says `10` then the title should say `Time Remaining: 00:10`.
+
+// Every one second the title should count down by one.
+
+// When the `Time Remaining` reaches `00:00` the alarm should play a sound. You can make the sound happen by using `playAlarm()`.
+
+// You can stop the alarm sound by pressing the `Stop Alarm` button.
+const alarmInput = document.querySelector("#alarmSet");
+const timeRemaining = document.querySelector("#timeRemaining");
+
+let timer;
+function setAlarm() {
+ clearInterval(timer);
+ pauseAlarm();
+ let totalSeconds = Math.round(Number(alarmInput.value));
+
+ if (totalSeconds > 36000) {
+ alert("Please enter a time less than 10 hours.");
+ alarmInput.value = "";
+ updateTime(0);
+ return;
+ }
+ if (
+ alarmInput.value === "" ||
+ totalSeconds <= 0 ||
+ !Number.isInteger(totalSeconds)
+ ) {
+ alert("Please enter a valid number of seconds");
+ updateTime(0);
+ alarmInput.value = "";
+ return;
+ }
+ alarmInput.value = "";
+
+ updateTime(totalSeconds);
+
+ timer = setInterval(() => {
+ totalSeconds--;
+ updateTime(totalSeconds);
+
+ if (totalSeconds === 0) {
+ playAlarm();
+ clearInterval(timer);
+ }
+ }, 1000);
+}
+
+function updateTime(secs) {
+ const minutes = String(Math.floor(secs / 60)).padStart(2, "0");
+ const seconds = String(secs % 60).padStart(2, "0");
+
+ timeRemaining.innerText = `Time Remaining: ${minutes}:${seconds}`;
+}
// DO NOT EDIT BELOW HERE
var audio = new Audio("alarmsound.mp3");
diff --git a/Sprint-3/alarmclock/index.html b/Sprint-3/alarmclock/index.html
index 48e2e80d9..ea5fb6bdf 100644
--- a/Sprint-3/alarmclock/index.html
+++ b/Sprint-3/alarmclock/index.html
@@ -1,10 +1,10 @@
-
+
- Title here
+ Alarm Clock app