下班倒计时，配合deskPin,完美

BridXuan
于 2024-10-09 15:19:16 发布
阅读量279
点赞数 2
文章标签： css javascript 前端 html
本文链接：https://blog.youkuaiyun.com/qq_43511740/article/details/142787764
版权
另存html 后缀即可，双击运行。
html
<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>自定义倒计时</title>
    <style>
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            margin: 0;
            background: linear-gradient(45deg, #3498db, #8e44ad);
            color: white;
        }
        .countdown-card {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            padding: 40px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
            text-align: center;
        }
        h1 {
            margin-bottom: 20px;
            font-size: 24px;
            text-transform: uppercase;
            letter-spacing: 2px;
        }
        #countdown {
            font-size: 72px;
            font-weight: bold;
        }
        .time-label {
            font-size: 18px;
            text-transform: uppercase;
            margin-top: 10px;
            opacity: 0.7;
        }
        input, select, button {
            margin-top: 20px;
            padding: 10px;
            font-size: 16px;
        }
        button {
            background-color: #2ecc71;
            color: white;
            border: none;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        button:hover {
            background-color: #27ae60;
        }
        @media (max-width: 480px) {
            .countdown-card { padding: 20px; }
            h1 { font-size: 18px; }
            #countdown { font-size: 48px; }
            .time-label { font-size: 14px; }
        }
    </style>
</head>
<body>
    <div class="countdown-card">
        <h1>倒计时</h1>
        <div id="countdown">00:00:00</div>
        <div class="time-label">剩余时间</div>
        <input type="time" id="targetTime" value="17:30">
        <select id="displayFormat">
            <option value="seconds">秒</option>
            <option value="minutes">分秒</option>
            <option value="hours" selected>时分秒</option>
        </select>
        <button onclick="setCountdown()">设置倒计时</button>
    </div>

    <script>
        let targetTime = new Date();
        targetTime.setHours(17, 30, 0, 0);

        function setCountdown() {
            const input = document.getElementById('targetTime').value;
            const [hours, minutes] = input.split(':');
            targetTime = new Date();
            targetTime.setHours(hours, minutes, 0, 0);
            if (targetTime <= new Date()) {
                targetTime.setDate(targetTime.getDate() + 1);
            }
            updateCountdown();
        }

        function updateCountdown() {
            const now = new Date();
            const diff = Math.max(0, Math.floor((targetTime - now) / 1000));
            
            const hours = Math.floor(diff / 3600);
            const minutes = Math.floor((diff % 3600) / 60);
            const seconds = diff % 60;

            const countdownElement = document.getElementById('countdown');
            const labelElement = document.querySelector('.time-label');
            const format = document.getElementById('displayFormat').value;
            
            if (diff <= 0) {
                countdownElement.textContent = "时间到！";
                labelElement.style.display = 'none';
            } else {
                let display;
                switch (format) {
                    case 'seconds':
                        display = `${diff}`;
                        break;
                    case 'minutes':
                        display = `${String(minutes + hours * 60).padStart(2, '0')}:${String(seconds).padStart(2, '0')}`;
                        break;
                    case 'hours':
                    default:
                        display = `${String(hours).padStart(2, '0')}:${String(minutes).padStart(2, '0')}:${String(seconds).padStart(2, '0')}`;
                }
                countdownElement.textContent = display;
                labelElement.style.display = '';
            }
        }

        setCountdown(); // 初始化倒计时
        setInterval(updateCountdown, 1000);

        // 当显示格式改变时更新倒计时
        document.getElementById('displayFormat').addEventListener('change', updateCountdown);
    </script>
</body>
</html>