<view class='list_box' wx:for='{{list}}' wx:key='this' wx:for-item='parentItem' wx:for-index='parentIndex' >
    <view class='list'>
        <view class='list_name_box' catchtap='listTap' data-parentindex='{{parentIndex}}'>
            <text class='list_item_name'>{{parentItem.listName}}</text>
            <image src='/img/down.png' class='icon_down {{parentItem.show&&"icon_down_rotate"}}'></image>
        </view>
        <view class='list_item_box' wx:if='{{parentItem.show}}'>
            <view class='list_item' wx:for='{{parentItem.item}}' wx:key='this' catchtap='listItemTap' data-index='{{index}}'  data-parentindex='{{parentIndex}}'>
                <view class='list_item_name_box'>
                    <text class='list_item_name'>{{item.itemName}}</text>
                    <image src='/img/down.png' class='icon_down {{item.show&&"icon_down_rotate"}}'></image>
                </view>
                <view class='other_box' wx:if='{{item.show}}'>
                    <view class='other'>
                        <text class='other_title'>內(nèi)容：</text>
                        <text class='other_text'>{{item.content}}</text>
                    </view>
                    <view class='other'>
                        <text class='other_title'>時(shí)間：</text>
                        <text class='other_text'>{{item.time}}</text>
                    </view>
                </view>
            </view>
        </view>
    </view>
</view>

page{
  background: #f3f7f7;
}
.list_name_box{
  background: #fff;
  border-bottom: 1px solid #efefef;
  display: flex;
  height: 90rpx;
  align-items: center;
  padding: 0 25rpx;
  font-size: 32rpx;
}
.list_item_name{
  flex: 1;
}
.icon_down{
  width: 35rpx;
  height:35rpx;
  transition:transform  0.3s;
}
/* .list_item_box{
  height: 0;
  transition:height  0.3s;
  overflow: hidden;
}
.list_item_box_show{
  height: 500rpx;
} */
.list_item_name_box{
  background: #fff;
  font-size: 30rpx;
  height: 80rpx;
  display: flex;
  align-items: center;
  padding: 0 25rpx 0 50rpx;
}
.other{
  display: flex;
  height: 80rpx;
  padding: 0 25rpx 0 50rpx;
  align-items: center;
  font-size: 30rpx;
  color: #666;
}
.icon_down_rotate{
  transform:rotate(180deg);
}

// pages/dome/dome.js
Page({

  /**
   * 頁(yè)面的初始數(shù)據(jù)
   */
  data: {
    list:[
      {listName:'列表1',
       item:[{
         itemName:'子列表1-1',
         content:'1-1中的內(nèi)容',
         time: '2015-05-06'
       }, {
           itemName: '子列表1-2',
           content: '1-2中的內(nèi)容',
           time: '2015-04-13'
       }, {
           itemName: '子列表1-3',
           content: '1-3中的內(nèi)容',
           time: '2015-12-06'
       }]
      }, 
      {
        listName: '列表2',
        item: [{
          itemName: '子列表2-1',
          content: '2-1中的內(nèi)容',
          time: '2017-05-06'
        }, {
          itemName: '子列表2-2',
          content: '2-2中的內(nèi)容',
          time: '2015-08-06'
        }, {
          itemName: '子列表2-3',
          content: '2-3中的內(nèi)容',
          time: '2015-11-06'
        }]
      }, {
        listName: '列表3',
        item: [{
          itemName: '子列表3-1',
          content: '3-1中的內(nèi)容',
          time: '2015-05-15'
        }, {
          itemName: '子列表3-2',
          content: '3-2中的內(nèi)容',
          time: '2015-05-24'
        }, {
          itemName: '子列表1-3',
          content: '3-3中的內(nèi)容',
          time: '2015-05-30'
        }]
      }
    ]
  },
  //點(diǎn)擊最外層列表展開(kāi)收起
  listTap(e){
    console.log('觸發(fā)了最外層');
    let Index = e.currentTarget.dataset.parentindex,//獲取點(diǎn)擊的下標(biāo)值
        list=this.data.list;
    list[Index].show = !list[Index].show || false;//變換其打開(kāi)、關(guān)閉的狀態(tài)
    if (list[Index].show){//如果點(diǎn)擊后是展開(kāi)狀態(tài)，則讓其他已經(jīng)展開(kāi)的列表變?yōu)槭掌馉顟B(tài)
      this.packUp(list,Index);
    }

    this.setData({
      list
    });
  },
  //點(diǎn)擊里面的子列表展開(kāi)收起
  listItemTap(e){
    let parentindex = e.currentTarget.dataset.parentindex,//點(diǎn)擊的內(nèi)層所在的最外層列表下標(biāo)
        Index=e.currentTarget.dataset.index,//點(diǎn)擊的內(nèi)層下標(biāo)
        list=this.data.list;
    console.log(list[parentindex].item,Index);
    list[parentindex].item[Index].show = !list[parentindex].item[Index].show||false;//變換其打開(kāi)、關(guān)閉的狀態(tài)
    if (list[parentindex].item[Index].show){//如果是操作的打開(kāi)狀態(tài)，那么就讓同級(jí)的其他列表變?yōu)殛P(guān)閉狀態(tài)，保持始終只有一個(gè)打開(kāi)
      for (let i = 0, len = list[parentindex].item.length;i<len;i++ ){
        if(i!=Index){
          list[parentindex].item[i].show=false;
        }

      }
    }
    this.setData({list});
  },
  //讓所有的展開(kāi)項(xiàng)，都變?yōu)槭掌?
  packUp(data,index){
    for (let i = 0, len = data.length; i < len; i++) {//其他最外層列表變?yōu)殛P(guān)閉狀態(tài)
      if(index!=i){
        data[i].show = false;
        for (let j=0;j<data[i].item.length;j++){//其他所有內(nèi)層也為關(guān)閉狀態(tài)
            data[i].item[j].show=false;
        }
      }
    }
  },
  onLoad: function (options) {

  },

  /**
   * 生命周期函數(shù)--監(jiān)聽(tīng)頁(yè)面初次渲染完成
   */
  onReady: function () {

  },

  /**
   * 生命周期函數(shù)--監(jiān)聽(tīng)頁(yè)面顯示
   */
  onShow: function () {

  },

  /**
   * 生命周期函數(shù)--監(jiān)聽(tīng)頁(yè)面隱藏
   */
  onHide: function () {

  },

  /**
   * 生命周期函數(shù)--監(jiān)聽(tīng)頁(yè)面卸載
   */
  onUnload: function () {

  },

  /**
   * 頁(yè)面相關(guān)事件處理函數(shù)--監(jiān)聽(tīng)用戶下拉動(dòng)作
   */
  onPullDownRefresh: function () {

  },

  /**
   * 頁(yè)面上拉觸底事件的處理函數(shù)
   */
  onReachBottom: function () {

  },

  /**
   * 用戶點(diǎn)擊右上角分享
   */
  onShareAppMessage: function () {

  }
})