data: {     listdb:[ ],     formData: {     },     submitForm(e) {     this.selectComponent('#form').validate((valid, errors) => {       console.log('valid', valid, errors)       if (!valid) {         const firstError = Object.keys(errors)         if (firstError.length) {           this.setData({             error: errors[firstError[0]].message           })         }       } else {         // 小程序端操作云数据库         wx.cloud.database({             env: 'nyjk-6giy1qx7c1552796' // 替换为您的云开发环境 ID           }).collection('JK')           .where({             mobile: this.data.formData.mobile           }).get({             success(e) {               console.log("查询结果", e)               this.setData({                 listdb:e.data///////////////加这行这里提示indefined               })               wx.showToast({                 title: '查询成功'               })             },             field(err){               console.log("查询失败", err)             }           })       }     })   } })