there are post request parameters like this
requestObj = {
   staffList: [{
       staffId: "xxx",
       availableQuota: 10
   }, {
       staffId": "xxx",
       availableQuota: 14
   }]
}
axios({
    method: "post",
    url: url,
    data: qs.stringify(requestObj, {arrayFormat: "brackets"})
})
 processing, it becomes like this, like a two-dimensional array 
  
 
what I hope is
staffList[0].staffId: "xxx"
staffList[0].availableQuota: 10
staffList[1].staffId: "xxx"
staffList[1].availableQuota: 14