Disable sorting on last column when using jQuery DataTables

The aoColumnDefs’ aTargets parameter lets you give indexes offset from the right (use a negative number) as well as from the left. So you could do:

aoColumnDefs: [
  {
     bSortable: false,
     aTargets: [ -1 ]
  }
]

The equivalent new API (for DataTables 1.10+) would be:

columnDefs: [
   { orderable: false, targets: -1 }
]