刚刚

// 云函数入口文件
const cloud = require('wx-server-sdk')
cloud.init()
const db = cloud.database()
const _ = db.command
// 云函数入口函数
exports.main = async (event, context) => {


var delete_list=''
  ordersColle.field({ time: true }).get().then(res => {
    this.setData({
      delete_list:res.data
    })
    this.data.delete_list.forEach(function (item, index) {
      var nowTime = new Date();
      var time=new Date(item.time)
      var cha = nowTime.getTime() - time;
      var hours = cha/(1000*60*60)
      if (hours > 24) {
         await db.collection('orders').where({ time: event.time }).remove();
      }
   })
})
          return
}