I have an array, i wan to add one more key value pair at each index.

```
var ajaxResult = ajaxGet("URL");
    if (ajaxResult.length > 0) {
        for (var i = 0; i < ajaxResult.length; i++) {
            debugger

            ajaxResult[i].prototype.push.apply({ "selectedTripLeader": $scope.TripLeaderData[0].Id });
            debugger
        }
    }

```

I am trying to achieving \* selectedTripLeader at each array item present into ajaxResult.\*
e.g. array[0].push({ "selectedTripLeader": $scope.TripLeaderData[0].Id })
array[1].push({ "selectedTripLeader": $scope.TripLeaderData[0].Id })

i have tried using normal push and prototype.push but it is not working. 
Solution with for loop or for each loop will be ok