给网站添加一个精美的2026年跨年倒计时功能，附代码和教程！

给网站添加一个好看的跨年倒计时功能，与用户一起跨年，下面是截图预览

废话不多说，直接上代码：

<div class="countdown-tips-wrapper">
        <div class="newyear2026-tips-bar" id="newyearTipsBar">
            <i class="fas fa-glass-cheers newyear-icon"></i>
            <span class="newyear-text">🎊 2026跨年</span>
            <div class="countdown-box" id="countdownBox"></div>
            <a href="https://www.weidus.com/2026" target="_blank" class="newyear-link">立即前往 →</a>
            <div class="newyear-close" id="newyearTipsClose">
                <i class="fas fa-times"></i>
            </div>
        </div>
    </div>

JS代码：

 <script>
        // 1. 关闭公告条功能
        const newyearTipsBar = document.getElementById('newyearTipsBar');
        const newyearTipsClose = document.getElementById('newyearTipsClose');

        newyearTipsClose.addEventListener('click', function() {
            newyearTipsBar.style.opacity = '0';
            newyearTipsBar.style.height = '0';
            newyearTipsBar.style.padding = '0';
            newyearTipsBar.style.border = '0';
            setTimeout(() => {
                newyearTipsBar.style.display = 'none';
            }, 300);
        });

        // 2. 实时跨年倒计时功能
        const countdownBox = document.getElementById('countdownBox');
        const targetTime = new Date('2026-01-01 00:00:00').getTime(); // 2026新年零点

        // 补零函数
        function addZero(num) {
            return num < 10 ? '0' + num : num;
        }

        // 更新倒计时
        function updateCountdown() {
            const currentTime = new Date().getTime();
            const timeDiff = targetTime - currentTime;

            let days = Math.floor(timeDiff / (1000 * 60 * 60 * 24));
            let hours = Math.floor((timeDiff % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
            let minutes = Math.floor((timeDiff % (1000 * 60 * 60)) / (1000 * 60));
            let seconds = Math.floor((timeDiff % (1000 * 60)) / 1000);

            // 补零处理
            hours = addZero(hours);
            minutes = addZero(minutes);
            seconds = addZero(seconds);

            if (timeDiff > 0) {
                countdownBox.innerHTML = `倒计时：<span class="countdown-num">${days}</span>天 
                                         <span class="countdown-num">${hours}</span>时 
                                         <span class="countdown-num">${minutes}</span>分 
                                         <span class="countdown-num">${seconds}</span>秒`;
            } else {
                countdownBox.innerHTML = '已开启！';
                clearInterval(countdownTimer);
            }
        }

        // 初始化+每秒更新
        updateCountdown();
        const countdownTimer = setInterval(updateCountdown, 1000);
    </script>

CSS代码：

        .countdown-tips-wrapper {
            width: 100%; 
            display: flex; 
            justify-content: center; 
            align-items: flex-start; 
        }

        .newyear2026-tips-bar {
            height: 36px; 
            width: 100%; 
            max-width: 580px; 
            background: linear-gradient(135deg, #ff7c94, #fbab5e, #fee256);
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0 12px; 
            box-shadow: 0 3px 15px rgba(255, 56, 92, 0.3); 
            position: relative;
            overflow: hidden;
            z-index: 999;
            border-radius: 18px; 
            flex-wrap: nowrap; 
        }

        .newyear2026-tips-bar::before {
            content: "";
            position: absolute;
            top: 0;
            left: -100%;
            width: 50%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
            animation: lightSlide 3s infinite linear;
        }

        @keyframes lightSlide {
            0% { left: -100%; }
            100% { left: 150%; }
        }

        .newyear-icon {
            color: #fff;
            font-size: 14px; 
            margin-right: 6px;
            animation: pulse 1.2s infinite ease-in-out;
            text-shadow: 0 0 5px rgba(255, 255, 255, 0.5);
            flex-shrink: 0; 
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.08); }
            100% { transform: scale(1); }
        }

        .newyear-text {
            font-size: 13px; 
            color: #fff;
            font-weight: 500;
            margin-right: 6px; 
            text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
            letter-spacing: 0.3px; 
            flex-shrink: 0; 
        }

        .countdown-box {
            font-size: 13px; 
            color: #fff;
            font-weight: 600;
            margin-right: 6px; 
            text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
            flex-shrink: 1; 
            white-space: nowrap; 
        }

        .countdown-num {
            color: #fff;
            background-color: rgba(0, 0, 0, 0.15);
            padding: 1px 3px; 
            border-radius: 3px;
            margin: 0 1px; /* 缩小数字间距 */
        }

        .newyear-link {
            font-size: 11px;
            color: #fff;
            text-decoration: none;
            font-weight: 600;
            padding: 2px 5px; 
            border: 1px solid rgba(255, 255, 255, 0.7);
            border-radius: 8px; 
            transition: all 0.3s ease;
            text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
            flex-shrink: 0; /* 禁止链接被压缩 */
            white-space: nowrap; /* 禁止链接文字换行 */
        }

        .newyear-link:hover {
            background-color: rgba(255, 255, 255, 0.25);
            border-color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

        .newyear-close {
            position: absolute;
            right: 12px; 
            top: 50%;
            transform: translateY(-50%);
            width: 16px; /* 移动端缩小按钮尺寸 */
            height: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.85);
            cursor: pointer;
            border-radius: 50%;
            transition: all 0.3s ease;
            flex-shrink: 0; /* 禁止关闭按钮被压缩 */
        }

        .newyear-close:hover {
            background-color: rgba(255, 255, 255, 0.25);
            color: #fff;
            transform: translateY(-50%) scale(1.1);
        }

        @media screen and (max-width: 375px) {
            .newyear2026-tips-bar {
                height: 34px; 
                padding: 0 10px;
            }
            .newyear-text, .countdown-box, .newyear-link {
                font-size: 10px; /* 进一步缩小字体 */
            }
            .newyear-icon {
                font-size: 13px;
            }
            .newyear-close {
                width: 15px;
                height: 15px;
                right: 10px;
            }
        }
 @media screen and (max-width: 575px) {
      .countdown-box {
  font-size: 11px;

}
     .newyear-text {
  font-size: 12px;

}
     }
#newyearTipsClose{
  display: none;
}

需要引入一条css：

  <link rel="stylesheet" href="https://cdn.bootcdn.net/ajax/libs/font-awesome/6.4.0/css/all.min.css">

完成以上代码即可实现跨年倒计时，虽然已经来到了2026年，但是春节还没来，可以在上述js代码中将倒计时日期改为春节的日期，如下

        // 2. 实时跨年倒计时功能
        const countdownBox = document.getElementById('countdownBox');
        const targetTime = new Date('2026-02-17 00:00:00').getTime(); // 2026新年零点

日期改为2月17日即可！