原生微信小程序轮播图点击放大

  <swiper class="index-adcs-sqiper" 
         indicator-dots="{ 
   {indicatorDots}}" 
         interval="{ 
   {interval}}"
         duration="{ 
   {duration}}" 
         circular="{ 
   {circular}}" 
         style="width:100%;height:{ 
   {advHeight}}rpx;" >
          <block wx:for="{ 
   {goods.thumbs}}" wx:for-index="idx" wx:for-item="item" wx:key="thumb_key">
            <swiper-item >
                  <image bindload="{ 
   {idx == 0 ? 'imageLoad' : ''}}" src="{ 
   {item}}" class="goodsadvimg "  data-src='{ 
   {item}}' data-list='{ 
   {goods.thumbs}}'  bindtap="previewImage"></image>
            </swiper-item>          
          </block>
    </swiper>

    previewImage:function(e){ 
      
        var current=e.target.dataset.src;
    var imgList=e.target.dataset.list
        console.log(123,e,imgList,current)
    //图片预览
    wx.previewImage({ 
   
      current: current, // 当前显示图片的http链接
      urls: imgList // 需要预览的图片http链接列表
    })
    },