<swiper style="width:100%;height:375rpx" indicator-dots="true"
      autoplay="true" interval="5000" duration="500">
        <swiper-item wx:for="{{imgUrls}}" wx:key>
          <image data-src="{{item}}" bindtap=\'previewImage\' style=\'width:100%;height:100%\' mode=\'aspectFill\' src="{{item}}" class="slide-image"/>
        </swiper-item>
    </swiper>

//注释: data-src="{{item}}" 别忘了

 data: {
    imgUrls: [
      \'https://images.unsplash.com/photo-1551214012-84f95e060dee?w=640\',
      \'https://www.cnblogs.com/images/likecs_com/520BigBear/1196074/t_dog.jpg\'
    ]
  },

/**
   * 预览图片
   */
  previewImage(e) {
    const current = e.target.dataset.src  //获取当前点击的 图片 url
    console.log(current)
    wx.previewImage({
      current,
      urls: this.data.imgUrls
    })
  }