orderable false in datatable code example

Example 1: orderable false in datatable

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

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

Example 2: order datatable

$(document).ready(function() {
    $('#example').DataTable( {
        "order": [[ 3, "desc" ]]
    } );
} );