diff --git a/Sprint-3/alarmclock/alarmclock.js b/Sprint-3/alarmclock/alarmclock.js
index 6ca81cd3b..87f7c08f8 100644
--- a/Sprint-3/alarmclock/alarmclock.js
+++ b/Sprint-3/alarmclock/alarmclock.js
@@ -1,5 +1,43 @@
-function setAlarm() {}
+function setAlarm() {
+ //get time input from user, as a number
+ let input = document.getElementById("alarmSet").value;
+ //find element to display timer
+ let timeRemaining = document.getElementById("timeRemaining");
+ //find part of timer that not changes
+ let timerText = timeRemaining.innerText;
+ let stringTimerText = timerText.substring(0, timerText.length - 5);
+ //format time from input and change timer text
+ timeRemaining.innerText = stringTimerText + formatTime(input);
+ let i = input;
+const interval = setInterval(() => { //set interval repeats code each second until reach 0.
+ timeRemaining.innerText = stringTimerText + formatTime(i);
+ i--;
+ if (i < 0) {
+ clearInterval(interval);
+ }
+ if (i == 0){
+ playAlarm();
+ }
+}, 1000);
+
+}
+function formatTime(seconds){
+ let minutes = parseInt(seconds / 60);
+ let remaindSecond = seconds % 60;
+ let strMinutes = String(minutes).padStart(2, "0");
+ let strRemaindSecond = String(remaindSecond).padStart(2, "0");
+ let result = strMinutes + ":"+ strRemaindSecond;
+ return result;
+}
+
+
+
+/*
+setTimeout(() => {
+ console.log("Delayed for 1 second.");
+}, 1000);
+*/
// 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..ff2d3b453 100644
--- a/Sprint-3/alarmclock/index.html
+++ b/Sprint-3/alarmclock/index.html
@@ -4,7 +4,7 @@
- Title here
+ Alarm clock app