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vue实现carousel拖拽

2026-01-08 16:03:50VUE

Vue实现Carousel拖拽功能

实现一个支持拖拽的Carousel组件可以通过结合Vue的响应式特性和原生DOM事件来实现。以下是具体实现方法：

基础Carousel结构

创建一个基础的Carousel组件，包含滑动轨道和可滑动的项目：

<template>
  <div class="carousel-container">
    <div 
      class="carousel-track"
      ref="track"
      @mousedown="startDrag"
      @touchstart="startDrag"
      @mousemove="handleDrag"
      @touchmove="handleDrag"
      @mouseup="endDrag"
      @touchend="endDrag"
      @mouseleave="endDrag"
    >
      <div 
        v-for="(item, index) in items" 
        :key="index" 
        class="carousel-item"
      >
        {{ item }}
      </div>
    </div>
  </div>
</template>

拖拽逻辑实现

在Vue组件中实现拖拽的核心逻辑：

<script>
export default {
  data() {
    return {
      items: [1, 2, 3, 4, 5], // 示例数据
      isDragging: false,
      startPositionX: 0,
      currentTranslateX: 0,
      prevTranslateX: 0,
      animationID: null,
      currentIndex: 0
    }
  },
  methods: {
    startDrag(event) {
      this.isDragging = true
      this.startPositionX = this.getPositionX(event)

      this.animationID = requestAnimationFrame(this.animation)
    },
    handleDrag(event) {
      if (!this.isDragging) return

      const currentPosition = this.getPositionX(event)
      const diff = currentPosition - this.startPositionX
      this.currentTranslateX = this.prevTranslateX + diff
    },
    endDrag() {
      if (!this.isDragging) return
      this.isDragging = false
      cancelAnimationFrame(this.animationID)

      const movedBy = this.currentTranslateX - this.prevTranslateX
      if (movedBy < -100 && this.currentIndex < this.items.length - 1) {
        this.currentIndex += 1
      }
      if (movedBy > 100 && this.currentIndex > 0) {
        this.currentIndex -= 1
      }

      this.setPositionByIndex()
    },
    getPositionX(event) {
      return event.type.includes('mouse') 
        ? event.clientX 
        : event.touches[0].clientX
    },
    animation() {
      this.setSliderPosition()
      if (this.isDragging) {
        this.animationID = requestAnimationFrame(this.animation)
      }
    },
    setSliderPosition() {
      this.$refs.track.style.transform = `translateX(${this.currentTranslateX}px)`
    },
    setPositionByIndex() {
      this.currentTranslateX = -this.currentIndex * this.$refs.track.offsetWidth
      this.prevTranslateX = this.currentTranslateX
      this.setSliderPosition()
    }
  },
  mounted() {
    window.addEventListener('resize', this.setPositionByIndex)
  },
  beforeDestroy() {
    window.removeEventListener('resize', this.setPositionByIndex)
  }
}
</script>

样式处理

添加必要的CSS样式确保Carousel正常显示和交互：

<style scoped>
.carousel-container {
  overflow: hidden;
  width: 100%;
  position: relative;
}

.carousel-track {
  display: flex;
  height: 300px;
  transition: transform 0.3s ease-out;
}

.carousel-item {
  min-width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  color: white;
  background: #333;
  border: 1px solid #555;
  user-select: none;
}
</style>