JavaScript Json Object access by variable name (Without mentioning the actual object name)

let tableFields={1: "bill_date", 2: "amount"};

for(a in res.tableFileds){

let temp=res.tableFileds[a];

html+=`

<div class="divTableCell" style="border:none">`

+res.newRecord[x].data[z][temp]+` </div>

`;}

var data = {"A5A50000":[{"bsid":"A5A50000","chanCount":17,

"time":"2009-05-27 16:36:45","avgInterference":1.711765,"maxInterference":4.97,

"avgHandsets":205.1176,"maxHandsets":315,"avgCalls":6.4118,"maxCalls":13,

"avgCBA":3868.98059,"maxCBA":7463,"sumSuccessCBA":197318,"sumTimeoutHandoff":133,

"sumAttemptHandoff":1028,"sumDeniedHandoff":216,"sumConfirmHandoff":679,

"sumHandoffNetwork":61873,"sumJoinNetwork":96888,"sumLeaveNetwork":93754,

"sumRcvdKeepalive":98773,"sumTimeoutKeepalive":19748,"sumAttemptUplink":93689,

"sumBlockedUplink":62453}]};
var bsID = 'A5A50000';
alert(data[bsID][0].time);