datatables sort by column code example
Example 1: datatables sorting order
// 3 is the column index, starting from 0 at the leftmost
$('#table').DataTable( {
order: [[ 3, "desc" ]] // or "asc" for ascending
} );
// to sort on multiple rows
$('#example').DataTable( {
order: [[ 3, 'desc' ], [ 0, 'asc' ]]
} );
// if using legacy datatables (initialization with lowercase dataTable)
aaSorting: [[3, "desc"]]
Example 2: 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() );