splice array from data

Try some validation on the index before splice.

function deleteKodePelayanan(index){
  index = parseInt(index,10);
  if (isNaN(index)) {
    // index is not a number
    return;
  } else if (!(index in kode_pelayanan)) {
    // index is a number but the value isn't set
    return;
  }
  kode_pelayanan.splice(index, 1);
}