vue实现轮播效果

使用Swiper插件实现轮播

安装Swiper及相关依赖：

npm install swiper vue-awesome-swiper

组件代码示例：

<template>
  <swiper :options="swiperOption">
    <swiper-slide v-for="(slide, index) in slides" :key="index">
      <img :src="slide.image" alt="">
    </swiper-slide>
    <div class="swiper-pagination" slot="pagination"></div>
  </swiper>
</template>

<script>
import { Swiper, SwiperSlide } from 'vue-awesome-swiper'
import 'swiper/css/swiper.css'

export default {
  components: {
    Swiper,
    SwiperSlide
  },
  data() {
    return {
      slides: [
        { image: 'image1.jpg' },
        { image: 'image2.jpg' },
        { image: 'image3.jpg' }
      ],
      swiperOption: {
        pagination: {
          el: '.swiper-pagination'
        },
        autoplay: {
          delay: 3000
        },
        loop: true
      }
    }
  }
}
</script>

纯CSS实现简单轮播

通过CSS动画实现基础轮播效果：

<template>
  <div class="carousel">
    <div class="slides" :style="{ transform: `translateX(-${currentIndex * 100}%)` }">
      <div v-for="(slide, index) in slides" :key="index" class="slide">
        <img :src="slide.image" alt="">
      </div>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      currentIndex: 0,
      slides: [
        { image: 'image1.jpg' },
        { image: 'image2.jpg' },
        { image: 'image3.jpg' }
      ]
    }
  },
  mounted() {
    setInterval(() => {
      this.currentIndex = (this.currentIndex + 1) % this.slides.length
    }, 3000)
  }
}
</script>

<style>
.carousel {
  width: 100%;
  overflow: hidden;
  position: relative;
}
.slides {
  display: flex;
  transition: transform 0.5s ease;
}
.slide {
  min-width: 100%;
}
</style>

使用Vant组件库轮播

安装Vant：

npm install vant

组件使用示例：

<template>
  <van-swipe :autoplay="3000" indicator-color="white">
    <van-swipe-item v-for="(image, index) in images" :key="index">
      <img :src="image" />
    </van-swipe-item>
  </van-swipe>
</template>

<script>
import { Swipe, SwipeItem } from 'vant'
import 'vant/lib/swipe/style'

export default {
  components: {
    [Swipe.name]: Swipe,
    [SwipeItem.name]: SwipeItem
  },
  data() {
    return {
      images: [
        'image1.jpg',
        'image2.jpg',
        'image3.jpg'
      ]
    }
  }
}
</script>

自定义指令实现轮播

创建可复用的轮播指令：

// carousel.js
export default {
  inserted(el, binding) {
    const items = el.querySelectorAll('.carousel-item')
    let current = 0

    function showItem(index) {
      items.forEach((item, i) => {
        item.style.display = i === index ? 'block' : 'none'
      })
    }

    showItem(0)

    setInterval(() => {
      current = (current + 1) % items.length
      showItem(current)
    }, binding.value || 3000)
  }
}

组件中使用：

<template>
  <div v-carousel="2000" class="carousel">
    <div class="carousel-item" v-for="(item, i) in items" :key="i">
      <img :src="item.image">
    </div>
  </div>
</template>

<script>
import carousel from './directives/carousel'

export default {
  directives: { carousel },
  data() {
    return {
      items: [
        { image: 'image1.jpg' },
        { image: 'image2.jpg' },
        { image: 'image3.jpg' }
      ]
    }
  }
}
</script>

<style>
.carousel-item {
  display: none;
  width: 100%;
}
</style>