<view class="table">
<view class="tr bg-w">
<view class="th">姓名</view>
<view class="th">报到方式</view>
<view class="th ">到校日期</view>
</view>
<block wx:for="{{listData}}" wx:key="{[code]}">
<view class="tr" wx:if="{{index % 2 == 0}}">
<view class="td">{{item.name}}</view>
<view class="td">{{item.style}}</view>
view class="td">{{item.datetime}}</view>
</view>
<view class="tr" wx:else>
<view class="td">{{item.name}}</view>
<view class="td">{{item.style}}</view>
<view class="td">{{item.datetime}}</view>
</view
></block>
</view>

data: {    listData: []    },
onShow() { 
   wx.cloud.database().collection('students').get({     
      success: res=>{        
          console.log('请求成功',res)
          this.setData({  
           listData: res.data 
       })       
    },   
   fail(err){       
      console.log('请求失败',err) 
       } 
    })
},

显示不了？