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vue实现转盘抽奖

2026-03-28 06:03:07VUE

Vue 实现转盘抽奖

基本思路

转盘抽奖的核心在于旋转动画和随机停止逻辑。通过CSS实现旋转效果，结合Vue的数据绑定控制旋转角度和停止时机。

准备工作

安装Vue项目并准备转盘图片或使用CSS绘制转盘。确保转盘被划分为多个等分区域，每个区域对应不同奖品。

实现步骤

HTML结构

<template>
  <div class="wheel-container">
    <div class="wheel" :style="wheelStyle" @click="startSpin">
      <div class="wheel-item" v-for="(item, index) in prizes" :key="index" :style="getItemStyle(index)">
        {{ item.name }}
      </div>
    </div>
    <button @click="startSpin" :disabled="isSpinning">开始抽奖</button>
  </div>
</template>

CSS样式

.wheel-container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.wheel {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  position: relative;
  overflow: hidden;
  transition: transform 4s cubic-bezier(0.17, 0.67, 0.12, 0.99);
}

.wheel-item {
  position: absolute;
  width: 50%;
  height: 50%;
  transform-origin: 100% 100%;
  left: 0;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
}

JavaScript逻辑

vue实现转盘抽奖

<script>
export default {
  data() {
    return {
      prizes: [
        { name: '奖品1', color: '#FF5252' },
        { name: '奖品2', color: '#FF4081' },
        { name: '奖品3', color: '#E040FB' },
        { name: '奖品4', color: '#7C4DFF' },
        { name: '奖品5', color: '#536DFE' },
        { name: '奖品6', color: '#448AFF' },
      ],
      rotation: 0,
      isSpinning: false
    }
  },
  computed: {
    wheelStyle() {
      return {
        transform: `rotate(${this.rotation}deg)`
      }
    }
  },
  methods: {
    getItemStyle(index) {
      const angle = 360 / this.prizes.length
      return {
        transform: `rotate(${angle * index}deg)`,
        backgroundColor: this.prizes[index].color
      }
    },
    startSpin() {
      if (this.isSpinning) return

      this.isSpinning = true
      const spinAngle = 360 * 5 + Math.floor(Math.random() * 360)
      this.rotation = this.rotation % 360 + spinAngle

      setTimeout(() => {
        this.isSpinning = false
        const prizeIndex = this.getPrizeIndex()
        alert(`恭喜获得: ${this.prizes[prizeIndex].name}`)
      }, 4000)
    },
    getPrizeIndex() {
      const normalizedRotation = this.rotation % 360
      const segmentAngle = 360 / this.prizes.length
      return Math.floor((360 - normalizedRotation) / segmentAngle) % this.prizes.length
    }
  }
}
</script>