How to get value of input which is in a cell of a selected row?

agg9505

I have this data table and I dont know how can I get the value of the input. can some one help me? with the next script I can get the data not the input.

 var table = $('#tblInventory table').DataTable();
            var text = '';
            var test = [];
            var quantity = [];
            for (i = 0; i < table.rows('.selected').data().length; i++) {
                test[i] = table.rows('.selected').data()[i].Id;
                quantity[i] =??
            }

or how to get the index of the selected row so I can do something like this

quantity[i] = table.cell(table.rows('.selected').index(), 3).nodes().to$().find('input').val();