https://developers.weixin.qq.com/miniprogram/dev/api/network/request/wx.request.html 很多次了，示例代码能不能给正确的！！！ [图片] [图片]

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第一次调用不能获得数据，需要等待500ms再次调用才能获得数据（等待300ms都不可以） 代码如下：   onLoad: function (options) {     this.today()     setTimeout(()=>{       this.today()     }, 500)//这里很奇怪，不先调用数据库，然后延时一会继续调用数据库，数据会出错   },   today(){     this.setData({       taptype:'今日'     })     this.loadDataFromServer('today')   },   loadDataFromServer(type){//获得订单数量     const now = new Date()     const db = wx.cloud.database({       env: 'yzktest-4g2sek3udaa6d365'     })      let clacDate;     if(type === 'today'){ //计算当天收入       clacDate = {         Day:now.getDate(),         Month:now.getMonth()+1,         Year:now.getFullYear()       }     }else if(type === 'tomonth'){  //计算当月收入       clacDate = {         Month:now.getMonth()+1,         Year:now.getFullYear()       }     }     //获得订单信息并计算收益     db.collection('Tourism_UserData').aggregate().match({       payDate:clacDate,       ifPay:1,       ifrefund:1,       area:this.data.pickedArea,       acenic:this.data.pickedAcenic,     }).count('datanum').end().then(res1 =>{       if(res1.list.length === 0){         this.setData({           OrderNumber:0,           WholeIncome:0,           WholePromoteFee:Promotefees,         })       }else{         const PAGE_COUNT = 20;         const totalCount = res1.list[0].datanum;  //总数据数量         const PageNum = Math.ceil(totalCount/PAGE_COUNT) //分页数         let Pageindex = 0;         let WholeIncome=0;         for(Pageindex=0;Pageindex<PageNum;Pageindex++){  //每一页挨个处理           db.collection('Tourism_UserData').aggregate().match({             payDate:clacDate,             ifPay:1,             ifrefund:1,             area:this.data.pickedArea,             acenic:this.data.pickedAcenic,           }).project({             total_fee:1,             refund_fee:1,             promotorNum:1,             promote_fee:1,           }).skip(Pageindex*PAGE_COUNT).limit(PAGE_COUNT).end().then(res2 =>{             const orderNum = res2.list.length;             let i=0;             for(i=0;i<orderNum;i++){               WholeIncome = WholeIncome+res2.list[i].total_fee-res2.list[i].refund_fee;             }             //console.log(Promotefees)             this.setData({               WholeIncome:WholeIncome,             })           })         }         this.setData({           OrderNumber:totalCount         })       }     })   },