Answers for "datatables deault as ascending order"

orderable false in datatable

$('#example').DataTable( {
  columnDefs: [
    { orderable: false, targets: 0 }
  ]
} );

reference: 
https://datatables.net/reference/option/columns.orderable

datatable get order column

var table = $('#example').DataTable();

var order = table.order();
alert( 'Table is ordered by column: ' + order[0][0] + ', direction:' + order[0][1]);

var title = table.column(order[0][0]).header();
alert( 'Ordering column title: ' + $(title).html() );