大转盘 js源码

<div class="wheel-container">
  <div class="wheel">
    <div class="segment" style="background-color: red;">奖品 1</div>
    <div class="segment" style="background-color: blue;">奖品 2</div>
    <div class="segment" style="background-color: green;">奖品 3</div>
    <div class="segment" style="background-color: yellow;">奖品 4</div>
    <div class="segment" style="background-color: purple;">奖品 5</div>
    <div class="segment" style="background-color: orange;">奖品 6</div>
  </div>
  <button id="spin-button">开始转</button>
</div>

.wheel-container {
  position: relative;
  width: 300px;
  height: 300px;
  margin: 50px auto;
}

.wheel {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
  transition: transform 5s ease-out;
}

.segment {
  position: absolute;
  top: 0;
  left: 50%;
  width: 50%;
  height: 50%;
  transform-origin: bottom right;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

#spin-button {
  display: block;
  margin: 20px auto;
  padding: 10px 20px;
}

const spinButton = document.getElementById('spin-button');
const wheel = document.querySelector('.wheel');

spinButton.addEventListener('click', () => {
  const randomAngle = Math.floor(Math.random() * 360) + 720; // 随机旋转角度，保证至少转两圈
  wheel.style.transform = `rotate(${randomAngle}deg)`;
});