抽奖转盘的js

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>抽奖转盘</title>
    <style>
        #wheel {
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background-color: #f0f0f0;
            position: relative;
            overflow: hidden;
        }
        .segment {
            width: 50%;
            height: 50%;
            position: absolute;
            transform-origin: 100% 100%;
        }
        .segment:nth-child(1) { background-color: red; transform: rotate(0deg) skewY(-45deg); }
        .segment:nth-child(2) { background-color: blue; transform: rotate(90deg) skewY(-45deg); }
        .segment:nth-child(3) { background-color: green; transform: rotate(180deg) skewY(-45deg); }
        .segment:nth-child(4) { background-color: yellow; transform: rotate(270deg) skewY(-45deg); }
    </style>
</head>
<body>
    <div id="wheel">
        <div class="segment"></div>
        <div class="segment"></div>
        <div class="segment"></div>
        <div class="segment"></div>
    </div>
    <button onclick="spin()">抽奖</button>

    <script>
        function spin() {
            const wheel = document.getElementById('wheel');
            const degrees = Math.floor(Math.random() * 360) + 720; // 随机旋转角度
            wheel.style.transition = 'transform 5s ease-out';
            wheel.style.transform = `rotate(${degrees}deg)`;
        }
    </script>
</body>
</html>