ajax function error

$('#register-submit').click(function(){


      var data= $('#register-form').serialize();

        $.ajax({
                 beforeSend:function(){
                    console.log(data);
                 },
                 type:'POST',
                 url:'../Controllers/registro.php',
                 data:data,
                 dataType:"json",
                 success: function(data){
                       console.log('nanananana');
                       console.log("soy data"+data);
                 },
                 error: function(jqXHR, textStatus, errorThrow){

                        if (jqXHR.status === 0) {

                                alert('Not connect: Verify Network.');

                            } else if (jqXHR.status == 404) {

                                alert('Requested page not found [404]');

                            } else if (jqXHR.status == 500) {

                                alert('Internal Server Error [500].');

                            } else if (textStatus === 'parsererror') {

                                alert('Requested JSON parse failed.');

                            } else if (textStatus === 'timeout') {

                                alert('Time out error.');

                            } else if (textStatus === 'abort') {

                                alert('Ajax request aborted.');

                            } else {

                                alert('Uncaught Error: ' + jqXHR.responseText);

                            }

                 }

           });






});