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vue实现循环滚动图片

Vue.js 2022-09-01 07:09:31 48

本文实例为大家分享了vue实现循环滚动图片的具体代码,供大家参考,具体内容如下

效果(循环滚动,可切换方向):

轮播组件BaseSwiper.vue:

<template>
  <div class="swiperBox">
    <img class="imgLeft" @click="clickLeft" src="../../../assets/img/左.png" alt="">
    <img class="imgRight" @click="clickRight" src="../../../assets/img/右.png" alt="">
    <div id="swiper">
      <div class="imgBox">
        <div class="imgDiv" v-for="(item,index) of imgList" :key="index">
          <img :src="item" />
        </div>
      </div>
    </div>
  </div>
</template>
<script>
export default {
  name: 'BaseSwiper',
  props: {
    speed: Number,
    direction: String,
  },
  data() {
    return {
      imgList: [
        require('../../../assets/img/组 14.png'),
        require('../../../assets/img/组 15.png'),
        require('../../../assets/img/组 17.png'),
        require('../../../assets/img/组 18.png'),
        require('../../../assets/img/组 24.png'),
      ],
      timer: null,
      theSpeed: this.speed,
      imgWidth: 260,
      theDirection: this.direction,
    }
  },
  methods: {
    clickLeft() {
      this.theDirection = 'left';
    },
    clickRight() {
      this.theDirection = 'right';
    },
  },
  mounted() {
    let imgBox = document.getElementsByClassName('imgBox')[0];
    //将imgBox下的图片进行拼接 循环展示图片
    imgBox.innerHTML += imgBox.innerHTML;
    let imgDiv = document.getElementsByClassName('imgDiv');
    imgBox.style.width = imgDiv.length * this.imgWidth + 'px';//设置div的宽度使图片可以放下
    let self = this;
    console.log(imgBox.offsetWidth,imgBox.style.width )
    function autoScroll() {
      if (imgBox.offsetLeft < -(imgBox.offsetWidth / 2)) {//提前更新left值,实现循环展示
        imgBox.style.left = 0;
      }
      if (imgBox.offsetLeft > 0) {//向右滚动 提前更新left值,实现循环展示
        imgBox.style.left = -(imgBox.offsetWidth / 2) + 'px';
      }
      if (self.theDirection == 'left') { //向左滚动,值为负
        self.theSpeed = -Math.abs(self.theSpeed)
      } else { //向右滚动
        self.theSpeed = Math.abs(self.theSpeed)
      }
      // 求出总的left值,等于left值加上移动的速度(px值)
      imgBox.style.left = imgBox.offsetLeft + self.theSpeed + 'px';
    }
    this.timer = setInterval(autoScroll, 30);//全局变量 ,保存返回的定时器
  },
  beforeDestroy() {
    clearInterval(this.timer);
    this.timer = null;
  }
}
</script>
<style scoped lang='less'>
.swiperBox {
  height: 100%;
  width: 100%;
  position: relative;
  .imgLeft {
    left: 0;
    top: 40%;
  }
  .imgLeft,
  .imgRight {
    width: 27px;
    height: 38px;
    position: absolute;
    cursor: pointer;
  }
  .imgRight {
    right: 0;
    top: 40%;
  }
  .directionIcon:hover {
    opacity: 1;
  }
  #swiper {
    width: 90%;
    height: 100%;
    margin: 0 auto;
    overflow: hidden;
    position: relative;
    .imgBox {
      height: 100%;
      position: absolute;
      left: 0;
      top: 0;
      overflow: hidden;
      display: flex;
      .imgDiv {
        width: 100%;
        margin-left: 15px;
        img {
          height: 100%;
          width: 280px;
          // width: 260px;
          // height: 120px;
        }
      }
    }
  }
}
</style>

父组件调用,只贴出关键代码:

<Swiper :speed="2" :direction="'left'"></Swiper>

//引用
import Swiper from '../BaseSwiper/BaseSwiper'

components: { Swiper },

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。

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