diff --git a/Sprint-3/alarmclock/alarmclock.js b/Sprint-3/alarmclock/alarmclock.js
index 6ca81cd3b..cc46c03ed 100644
--- a/Sprint-3/alarmclock/alarmclock.js
+++ b/Sprint-3/alarmclock/alarmclock.js
@@ -1,4 +1,35 @@
-function setAlarm() {}
+let secondsRemaining = 0;
+let timer = null;
+
+function setAlarm() {
+ const input = document.getElementById("alarmSet");
+ const heading = document.getElementById("timeRemaining");
+
+ secondsRemaining = Number(input.value);
+
+ updateHeading(heading, secondsRemaining);
+
+ timer = setInterval(() => {
+ secondsRemaining -= 1;
+
+ updateHeading(heading, secondsRemaining);
+
+ if (secondsRemaining === 0) {
+ clearInterval(timer);
+ playAlarm();
+ }
+ }, 1000);
+}
+
+function updateHeading(heading, totalSeconds) {
+ const minutes = Math.floor(totalSeconds / 60);
+ const seconds = totalSeconds % 60;
+
+ const formattedMinutes = String(minutes).padStart(2, "0");
+ const formattedSeconds = String(seconds).padStart(2, "0");
+
+ heading.innerText = `Time Remaining: ${formattedMinutes}:${formattedSeconds}`;
+}
// DO NOT EDIT BELOW HERE
diff --git a/Sprint-3/alarmclock/index.html b/Sprint-3/alarmclock/index.html
index 48e2e80d9..5de159cd6 100644
--- a/Sprint-3/alarmclock/index.html
+++ b/Sprint-3/alarmclock/index.html
@@ -4,7 +4,7 @@
- Title here
+ Alarm Clock app
diff --git a/Sprint-3/alarmclock/package.json b/Sprint-3/alarmclock/package.json
index e1331e071..92e81d7b7 100644
--- a/Sprint-3/alarmclock/package.json
+++ b/Sprint-3/alarmclock/package.json
@@ -13,5 +13,8 @@
"bugs": {
"url": "https://github.com/CodeYourFuture/CYF-Coursework-Template/issues"
},
- "homepage": "https://github.com/CodeYourFuture/CYF-Coursework-Template#readme"
+ "homepage": "https://github.com/CodeYourFuture/CYF-Coursework-Template#readme",
+ "devDependencies": {
+ "@testing-library/jest-dom": "^6.9.1"
+ }
}