上海工商网站_网站设计素材包_哪里有seo排名优化_软文推广发布

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<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Clock CAPTCHA with Whole and Half Hours</title><style>body {font-family: Arial, sans-serif;display: flex;justify-content: center;align-items: center;height: 100vh;margin: 0;background-color: #f0f0f0;}.container {background-color: white;padding: 20px;border-radius: 8px;box-shadow: 0 0 10px rgba(0,0,0,0.1);text-align: center;}.clock {width: 200px;height: 200px;border: 2px solid black;border-radius: 50%;position: relative;margin: 20px auto;}.hand {background: black;position: absolute;transform-origin: bottom center;}.hour {width: 6px;height: 60px;top: 40px;left: 97px;}.minute {width: 4px;height: 80px;top: 20px;left: 98px;}.number {position: absolute;font-size: 18px;font-weight: bold;}input, button {margin: 10px 0;padding: 5px;}#message {margin-top: 10px;font-weight: bold;}</style>
</head>
<body>
<div class="container"><h2>时钟验证码</h2><div class="clock" id="clock"><div class="hand hour" id="hourHand"></div><div class="hand minute" id="minuteHand"></div><!-- Clock numbers will be added here by JavaScript --></div><input type="text" id="timeInput" placeholder="请输入时间 (HH:MM)"><button onclick="checkTime()">确定</button><button onclick="generateRandomTime()">换验证码</button><div id="message"></div>
</div><script>let currentTime = { hours: 0, minutes: 0 };function setClockHands(hours, minutes) {const hourHand = document.getElementById('hourHand');const minuteHand = document.getElementById('minuteHand');const hourDegrees = (hours % 12 + minutes / 60) * 30;const minuteDegrees = minutes * 6;hourHand.style.transform = `rotate(${hourDegrees}deg)`;minuteHand.style.transform = `rotate(${minuteDegrees}deg)`;}function addClockNumbers() {const clock = document.getElementById('clock');for (let i = 1; i <= 12; i++) {const number = document.createElement('div');number.className = 'number';number.textContent = i;const angle = (i - 3) * 30 * (Math.PI / 180);const x = 90 + 80 * Math.cos(angle);const y = 90 + 80 * Math.sin(angle);number.style.left = `${x}px`;number.style.top = `${y}px`;clock.appendChild(number);}}function generateRandomTime() {const hours = Math.floor(Math.random() * 12) + 1; // 1 to 12const minutes = Math.random() < 0.5 ? 0 : 30; // Only 0 or 30 minutescurrentTime = { hours, minutes };setClockHands(hours, minutes);document.getElementById('timeInput').value = '';document.getElementById('message').textContent = '';}function checkTime() {const input = document.getElementById('timeInput').value;const [inputHours, inputMinutes] = input.split(':').map(Number);const correctTime = `${String(currentTime.hours).padStart(2, '0')}:${String(currentTime.minutes).padStart(2, '0')}`;if (inputHours === currentTime.hours && inputMinutes === currentTime.minutes) {document.getElementById('message').textContent = '验证通过！';document.getElementById('message').style.color = 'green';} else {document.getElementById('message').textContent = '时间不正确，请重试。';document.getElementById('message').style.color = 'red';}}// 初始化时钟addClockNumbers();generateRandomTime();
</script>
</body>
</html>
上海工商网站_网站设计素材包_哪里有seo排名优化_软文推广发布

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