Inline edit - how navigate with arrows keycode =38/40

neelsf

I got the tab button to work with
`var dataTable = $('#racedata').DataTable({
"processing" : true,
"serverSide" : true,
"keys" : true,
"order" : [],
"ajax" : {
url:"fetch.php",
type:"POST"

}

});
table.keys.enable( 'navigation-only' );
}
`
How to i get the arrows keycode=38/40 to function?
Please be so kind to advise