@foreach($listdata as $data)
// normal iteration
{{ $data->iteration() }}
// if you using "paginate()" in your query, better use this iteration per-page below:
// for example:
// page 1 iteration = 1,2,3,4,5 ascending, 5,4,3,2,1 descending
// and page 2 iteration will be = 6,7,8,9,10 ascending, 10,9,8,7,6 descending
// iteration ascending (1,2,3,...)
{{ $data->firstItem() + $loop->index }}
// iteration descending (...,3,2,1)
{{ ($data->total()-$loop->index) - (($data->currentpage()-1) * $data->perpage()) }}
@endforeach