超简单的微信小程序轮播图

<style type="less" scoped="scoped">
  .swiper image {
   width: 100%;
   height: auto;
 }
 
  .swiper-image {
   height: 100%;
   width: 100%;
  }
 
  .slide-image {
   height: 100%;
   width: 100%;
   display: block;
  }
</style>
<template>
   <view class="swiper">
    <swiper indicator-dots="{{indicatorDots}}" vertical="{{vertical}}" autoplay="{{autoplay}}" duration="{{duration}}" interval="{{interval}}" indicator-active-color="#007aff" bindchange="bindchange" circular="{{circular}}"
      style="height:{{imgheights[current]}}rpx;">
      <block wx:for="{{GoodsDatas.imgshow}}" wx:for-key="{{index}}" wx:for-item="image">
        <swiper-item>
          <image src="{{image.img}}" data-id="{{index}}" class="slide-image" mode="widthFix" bindload="imageLoad" />
        </swiper-item>
       </block>
     </swiper>
   </view>
</template>
<script>
 import wepy from '@wepy/core'
 wepy.page({
  data: {
   circular: true,
   //是否显示画板指示点，根据图片数量自动生成多少个圆点
   indicatorDots: true,
   //选中点的颜色
   //是否竖直
   vertical: false,
   //是否自动切换
   autoplay: true,
   //自动切换的间隔
   interval: 3000,
   //滑动动画时长毫秒
   duration: 1000,
   //所有图片的高度
   imgheights: [],
   //图片宽度
   imgwidth: 320,
   //默认
   current: 0
  },
  imageLoad: function(e) { //获取图片真实宽度
   var imgwidth = e.detail.width,
    imgheight = e.detail.height,
    //宽高比
    ratio = imgwidth / imgheight;
   console.log(imgwidth, imgheight)
   //计算的高度值
   var viewHeight = 750 / ratio;
   var imgheight = viewHeight;
   var imgheights = this.data.imgheights;
   //把每一张图片的对应的高度记录到数组里
   imgheights[e.target.dataset.id] = imgheight;
   this.setData({
    imgheights: imgheights
   })
  },
  bindchange: function(e) {
   // console.log(e.detail.current)
   this.setData({
    current: e.detail.current
   })
  }
 })
</script>