JS Chain

<script type="text/javascript">
        $("#fakultas_id").change(function(){
        var fakultas_id = $("#fakultas_id").val();
            $.ajax({
                type: "POST",
                url : "<?php echo site_url('wisuda/select_progdi'); ?>",
                data: {'<?php echo $this->security->get_csrf_token_name(); ?>':'<?php echo $this->security->get_csrf_hash(); ?>', fakultas_id:fakultas_id},
                success: function(msg){
                    $('#progdi').html(msg);
                }
            });
        });
        </script>