diff --git a/Sprint-3/alarmclock/alarmclock.js b/Sprint-3/alarmclock/alarmclock.js
index 6ca81cd3b..c68b7389b 100644
--- a/Sprint-3/alarmclock/alarmclock.js
+++ b/Sprint-3/alarmclock/alarmclock.js
@@ -1,19 +1,74 @@
-function setAlarm() {}
+let timer = null;
+let totalSeconds = 0;
-// DO NOT EDIT BELOW HERE
+function formatTime(seconds) {
+ const mins = Math.floor(seconds / 60);
+ const secs = seconds % 60;
+ return `${String(mins).padStart(2, "0")}:${String(secs).padStart(2, "0")}`;
+}
-var audio = new Audio("alarmsound.mp3");
+function parseInputTime(value) {
+ if (!/^\d{2}:\d{2}$/.test(value)) return null;
+ const [m, s] = value.split(":").map(Number);
+ if (s > 59) return null;
+ return m * 60 + s;
+}
+
+function updateDisplay() {
+ document.getElementById("alarmSet").value = formatTime(totalSeconds);
+ document.getElementById("timeRemaining").textContent = `Time Remaining: ${formatTime(totalSeconds)}`;
+}
+
+function incrementTime(amount) {
+ totalSeconds += amount;
+ if (totalSeconds < 0) totalSeconds = 0;
+ updateDisplay();
+}
+
+function setAlarm() {
+ const input = document.getElementById("alarmSet");
+ const parsed = parseInputTime(input.value);
+ if (parsed === null) {
+ alert("Use MM:SS format");
+ return;
+ }
-function setup() {
- document.getElementById("set").addEventListener("click", () => {
- setAlarm();
- });
+ totalSeconds = parsed;
+ updateDisplay();
- document.getElementById("stop").addEventListener("click", () => {
- pauseAlarm();
- });
+ if (timer) clearInterval(timer);
+
+ timer = setInterval(() => {
+ totalSeconds--;
+ updateDisplay();
+ if (totalSeconds <= 0) {
+ clearInterval(timer);
+ timer = null;
+ playAlarm();
+ }
+ }, 1000);
+}
+
+function stopTimer() {
+ if (timer) {
+ clearInterval(timer);
+ timer = null;
+ }
+ totalSeconds = 0;
+ updateDisplay();
+ pauseAlarm();
}
+// attach to window so HTML buttons can call them
+window.incrementTime = incrementTime;
+window.setAlarm = setAlarm;
+window.stopTimer = stopTimer;
+window.playAlarm = playAlarm;
+window.pauseAlarm = pauseAlarm;
+
+// DO NOT EDIT BELOW HERE
+var audio = new Audio("alarmsound.mp3");
+
function playAlarm() {
audio.play();
}
@@ -22,4 +77,5 @@ function pauseAlarm() {
audio.pause();
}
-window.onload = setup;
+
+
diff --git a/Sprint-3/alarmclock/index.html b/Sprint-3/alarmclock/index.html
index 48e2e80d9..83e20730c 100644
--- a/Sprint-3/alarmclock/index.html
+++ b/Sprint-3/alarmclock/index.html
@@ -3,18 +3,94 @@
-
- Title here
+ Alarm Clock App
-
-
Time Remaining: 00:00
-
-
+
+
-
-
+
+
+
+
+
+
+
+
+
+
+ Time Remaining:
00:00
+
+
+
+