<view class="item-info" wx:for="{{display_all_list}}" wx:for-index="index" wx:key="index">
    <view class="item-into-name-share">
      <view class="item-into-name" bindtap="editRecord" data-index="{{index}}">
        {{item.sup_name}}
      </view>
      <button style="border:none;position: inherit;padding:0rpx;" id="{{index}}" bindtap="onShareAppMessage"
        class="share" open-type="share" data-cust-index="{{index}}" data-no="{{item.supcust_no}}">
        <image src="{{share_logo}}" class="share-image">
        </image>
        分享
      </button>
    </view>
    <view class="item-into-detail" bindtap="editRecord" data-index="{{index}}">
      客户编码: {{item.supcust_no}}
    </view>
    <view class="item-into-detail" bindtap="editRecord" data-index="{{index}}">
      冻结业务:{{item.order_flag==='0'?'正常':'冻结'}}
    </view>
  </view>
js 事件

  onShareAppMessage: function (e) {
    console.log(e)
    console.log(app.globalData.wxgh_oauth_url + '/Image/sygj-logo.png')
    let _this = this;
    if (e.from && e.from === 'button') {
      console.log(e.target.dataset.custIndex)
      let custInfo = _this.data.display_all_list[Number(e.target.dataset.custIndex)];
      
      return {
        title: custInfo.sup_name,
        imageUrl: app.globalData.wxgh_oauth_url + '/Image/sygj-logo.png'
      };

for 循环遍历后  data-cust-index 属性的值是不同的

console 打印的数据，都为for 循环数组的最后一条记录