微信小程序 点击预览大图

html

<ul class="rev_img_list">
  <li wx:for="{{ cItem.pic_arr }}" wx:for-item="pItem" wx:key="pKey" class="rev_img_item">
    <image src="{{pItem}}" class="rev_img" bindtap="preview" data-list="{{ cItem.pic_arr }}" data-src="{{ pItem }}"></image>
  </li>
</ul>

js

 preview(event){//轮播图点击放大
  let currentUrl = event.currentTarget.dataset.src;
  let imgList = event.currentTarget.dataset.list;
  let listSrc = [];
  imgList.forEach(function(v,i){
    listSrc.push(v.url)
  })
  wx.previewImage({
    current: currentUrl,
    urls: listSrc
  })
},