Form contain CSRF code and AJAX

form.php

// So, this is the part of file add.php which is this is located in application/views in CodeIgniter  
<script src="<?php echo base_url('assets/js/jquery.min.js');?>" charset="utf-8"></script>
    <!-- So, for make CSRF working more times, you should use cookie plugin -->
    <script src="<?php echo base_url('assets/js/jquery.cookie.js'); ?>" charset="utf-8"></script>
    <script src="<?php echo base_url('assets/js/bootstrap.min.js'); ?>" charset="utf-8"></script>
    <script>
    /* Ajax Dropdown Jurusan Prodi */
    function getProdi(value) {
      console.log(value);
      var row = value;
      var csrf = $.cookie('csrf_cookie');
      $.ajax({
        type: "POST",
        url: "<?php echo site_url('mahasiswa/get_prodi');?>",
        // Add csrf_test_name: $.cookie('csrf_cookie_name') to your data
        data: {row, csrf_token: csrf},
        success: function(data) {
          $("#prodi").html(data);
          console.log(data);
        },

        error:function(XMLHttpRequest){
          alert(XMLHttpRequest.responseText);
        }
      });
    };
    </script>