document.addEventListener("DOMContentLoaded", function() { let banner = document.getElementById("countdown-banner"); let timerElement = document.getElementById("timer"); // Check if countdown already exists let storedExpiry = sessionStorage.getItem("countdownExpiry"); let now = Date.now(); if (!storedExpiry || now > parseInt(storedExpiry)) { // Set a new expiration time 15 minutes from now let expiryTime = now + (15 * 60 * 1000); sessionStorage.setItem("countdownExpiry", expiryTime); storedExpiry = expiryTime; } function updateCountdown() { let remainingTime = parseInt(sessionStorage.getItem("countdownExpiry")) - Date.now(); if (remainingTime <= 0) { banner.style.display = "none"; // Hide the banner after time expires sessionStorage.removeItem("countdownExpiry"); } else { let minutes = Math.floor(remainingTime / (1000 * 60)); let seconds = Math.floor((remainingTime % (1000 * 60)) / 1000); timerElement.innerHTML = `⏳ ${minutes}:${seconds < 10 ? '0' : ''}${seconds} left`; requestAnimationFrame(updateCountdown); } } updateCountdown(); });