小程序实现列表展开收起效果

<view bindtap="toChange" data-show='isShow'>{{isShow?'收起':'展开'}}<view>
<view class="{{isShow?'db' : 'dn'}}">这是你要收起展开的内容</view>

 Page({\
  data: {
  isShow: true, //true为展开
  },
  /*
  * isShow做取反操作
  * */
  toChange (e) {
  let that = this;
  let name = e.currentTarget.dataset.show;
  let param = {};
  param[name] = !that.data[name];
  that.setData({
   ...param
  })
  },
 })

.db{
 display:block;
}
.dn{
 display:none;
}

page({
data:{
 list:[{id:1},{id:2}],
},
toShowItem(e) {
 let that = this;
 let id = e.currentTarget.dataset.id,
  show = e.currentTarget.dataset.show;
 that.data.list.forEach(function (v) {
  if (v.id == id) {
  v.show = !show;//这里污染原始数组数据
  }
 })
 //利用污染，对列表设置值
 this.setData({
  list: this.data.list
 })
 }
})

<view wx:for="{{list}}" wx:key="{{index}}" wx:for-item="item">
 <view bindtap="toShowItem" data-id='{{item.id}}' data-show='{{item.show}}'>
  <text>{{item.show?'收起明细':'明细'}}</text>
 </view>
 <view class="{{item.show ? 'db' : 'dn'}}">
  这里是你展开收起的内容
 </view>
</view>