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vue实现图片左右滚动

2026-01-23 08:12:03VUE

实现图片左右滚动的核心思路

通过CSS和Vue指令控制图片容器的横向滚动，结合事件监听实现手动或自动滚动效果。关键在于动态计算容器宽度、图片位置以及滚动动画的平滑过渡。

基本HTML结构

<template>
  <div class="scroll-container" ref="container">
    <div class="image-wrapper" :style="{ transform: `translateX(${offset}px)` }">
      <img v-for="(img, index) in images" :key="index" :src="img" @click="handleClick(index)">
    </div>
    <button class="scroll-btn left" @click="scrollLeft">←</button>
    <button class="scroll-btn right" @click="scrollRight">→</button>
  </div>
</template>

Vue组件脚本部分

<script>
export default {
  data() {
    return {
      images: [
        'image1.jpg',
        'image2.jpg',
        'image3.jpg',
        // 更多图片路径
      ],
      offset: 0,
      containerWidth: 0,
      scrollSpeed: 5,
      autoScrollInterval: null
    }
  },
  mounted() {
    this.initContainerWidth()
    window.addEventListener('resize', this.initContainerWidth)
    this.startAutoScroll()
  },
  beforeDestroy() {
    window.removeEventListener('resize', this.initContainerWidth)
    this.stopAutoScroll()
  },
  methods: {
    initContainerWidth() {
      this.containerWidth = this.$refs.container.offsetWidth
    },
    scrollLeft() {
      this.offset = Math.min(this.offset + this.containerWidth / 2, 0)
    },
    scrollRight() {
      const maxOffset = -(this.$refs.container.scrollWidth - this.containerWidth)
      this.offset = Math.max(this.offset - this.containerWidth / 2, maxOffset)
    },
    handleClick(index) {
      console.log('Clicked image:', index)
    },
    startAutoScroll() {
      this.autoScrollInterval = setInterval(() => {
        this.scrollRight()
        const maxOffset = -(this.$refs.container.scrollWidth - this.containerWidth)
        if (this.offset <= maxOffset) {
          this.offset = 0 // 循环滚动
        }
      }, 3000)
    },
    stopAutoScroll() {
      clearInterval(this.autoScrollInterval)
    }
  }
}
</script>

关键CSS样式

<style scoped>
.scroll-container {
  position: relative;
  width: 100%;
  overflow: hidden;
  white-space: nowrap;
}

.image-wrapper {
  display: inline-block;
  transition: transform 0.5s ease;
}

.image-wrapper img {
  height: 200px;
  margin-right: 10px;
  cursor: pointer;
}

.scroll-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.5);
  color: white;
  border: none;
  padding: 10px;
  cursor: pointer;
  z-index: 10;
}

.scroll-btn.left {
  left: 10px;
}

.scroll-btn.right {
  right: 10px;
}
</style>

进阶优化方案

添加触摸事件支持实现移动端滑动：

data() {
  return {
    // 新增触摸相关数据
    touchStartX: 0,
    isDragging: false
  }
},
methods: {
  handleTouchStart(e) {
    this.touchStartX = e.touches[0].clientX
    this.isDragging = true
    this.stopAutoScroll()
  },
  handleTouchMove(e) {
    if (!this.isDragging) return
    const touchX = e.touches[0].clientX
    this.offset += (touchX - this.touchStartX) * 0.5
    this.touchStartX = touchX
  },
  handleTouchEnd() {
    this.isDragging = false
    this.startAutoScroll()
  }
}

HTML部分添加触摸事件：

<div class="image-wrapper" 
     :style="{ transform: `translateX(${offset}px)` }"
     @touchstart="handleTouchStart"
     @touchmove="handleTouchMove"
     @touchend="handleTouchEnd">

性能优化建议

使用Intersection Observer API实现懒加载：

const observer = new IntersectionObserver((entries) => {
  entries.forEach(entry => {
    if (entry.isIntersecting) {
      const img = entry.target
      img.src = img.dataset.src
      observer.unobserve(img)
    }
  })
})

// 在img元素上添加data-src属性
<img v-for="(img, index) in images" 
     :key="index" 
     :data-src="img" 
     @load="handleImageLoad">