deadlines

playlist/static/js/countdown.js

@@ -0,0 +1,37 @@
+let timer = null;
+function startCountdown(dateString) {
+    if (timer) clearInterval(timer);
+	let cd = document.getElementById("countdown")
+	if (cd) {
+		cd.classList.remove("hide");
+		if (dateString == "None") cd.classList.add("hide");
+	}
+	const end = new Date(dateString).getTime();
+	const dayEl = document.getElementById('days');
+	const hoursEl = document.getElementById('hours');
+	const minutesEl = document.getElementById('minutes');
+	const secondsEl = document.getElementById('seconds');
+	const seconds = 1000;
+	const minutes = seconds * 60;
+	const hours = minutes * 60;
+	const days = hours * 24;
+	timer = setInterval(updateTime, seconds);
+	function updateTime() {
+		if (dayEl) {
+			let now = new Date().getTime();
+			const difference = end - now;
+			
+			if (difference < 0) {
+				if (timer) clearInterval(timer);
+				cd.classList.add("hide");
+				return;
+			}
+				
+			dayEl.innerText = Math.floor(difference / days);
+			hoursEl.innerText = Math.floor( (difference % days) / hours );
+			minutesEl.innerText = Math.floor( (difference % hours) / minutes );
+			secondsEl.innerText = Math.floor( (difference % minutes) / seconds );  
+		}
+	}
+	updateTime();
+}