if (distance < 0) clearInterval(countdownInterval); window.location.href = "https://yoursite.com/launch";
Wrap the HTML in a class .timer-wrapper and duplicate the logic using querySelectorAll and forEach loops.
A JavaScript countdown timer is a dynamic web component that calculates the time difference between the current moment and a specified future date. Unlike static HTML or CSS, JavaScript actively recalculates this difference every second (or millisecond), updating the display in real-time without requiring a page refresh.
const days = Math.floor(distance / (1000 * 60 * 60 * 24)); const hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60)); const minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60)); const seconds = Math.floor((distance % (1000 * 60)) / 1000); javascript countdown timer download free
Use textContent instead of innerHTML to update DOM nodes quickly without forcing the browser to re-parse HTML strings.
Drives conversions by showing visitors exactly how much time is left for an offer.
if (distance < 0) document.getElementById("countdown").innerHTML = "EXPIRED"; clearInterval(timerInterval); return; const days = Math
// Start the clock initTimer();
// If timer is expired if (distance < 0) clearInterval(countdownInterval); document.querySelector('.countdown-timer').style.opacity = '0.5'; expiredMessage.style.display = 'block'; return;
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Free JavaScript Countdown Timer</title> <link rel="stylesheet" href="style.css"> </head> <body> <div class="container"> <h1>Our Special Offer Ends In:</h1> <div class="countdown-timer"> <div class="time-unit"> <span id="days">00</span> <span class="label">Days</span> </div> <div class="time-unit"> <span id="hours">00</span> <span class="label">Hours</span> </div> <div class="time-unit"> <span id="minutes">00</span> <span class="label">Minutes</span> </div> <div class="time-unit"> <span id="seconds">00</span> <span class="label">Seconds</span> </div> </div> <div id="expired-message" class="expired" style="display: none;"> 🚀 The event has started! 🚀 </div> <button id="reset-button">Reset Timer</button> </div> <script src="script.js"></script> </body> </html> drive anticipation for product launches
Change this to your desired date and timezone.
In the modern web development landscape, countdown timers are essential tools. They build urgency for e-commerce sales, drive anticipation for product launches, manage quiz time limits, or simply count down to a happy hour. The search for a is common among developers and hobbyists alike.