小程序开发 绑定自定义数据data- 及JS获取

1wxml
<!-- 茶系显示隐藏函数sectionSelect -->
<view  class="img-fur" data-id="{{item.id}}" bindtap="sectionSelect">
  <image class="section-img" src="{{item.sectionurl}}"></image>
</view>

2js

sectionSelect:function(e){
  // var that=this;
  // console.log(e.currentTarget.dataset.id);
  var idselect = e.currentTarget.dataset.id;
  var teaamong = this.data.teaamong;
  if (idselect==1){
    // console.log(this.data.teaamong[id].teatitle)
    for (var i = 0; i < teaamong.length;i++){
      console.log(teaamong[i].listshow);
      teaamong[i].listshow=true;
      this.setData({
      teaamong: teaamong,
      });
    }
  } else {
    for (var i = 0; i < teaamong.length;i++){
      teaamong[i].listshow=false;  
    };
    teaamong[idselect-2].listshow = true; 
    this.setData({
      teaamong: teaamong,
    });
  } 
},