jqueryProblem

   $('#buttonDemo1').click(function () {
        $('#place_generating_id').html('');
        jQuery.ajaxSettings.traditional = true;

        var _data = [firstOption, secondOption, thirdOption];
        $.ajax({
            type: 'GET',
            url: '/Home/GetData',
            data: { array: _data ,lang : l ,edu :e},
            success: function (result) {
                if (result == 'no') {
                    $('#place_generating_id').html('<h2 class="text-center bg-warning">' + 'Ничего не найдено' + '</h2>');
                    return;
                }
                var html = '';
                var id = result[0].universityId;
                html += '<table class="table table-bordered table-sm">';
                html += '<thead>';
                html += '<tr>';
                html += '<th colspan="8" class="text-center p-3">' + result[0].universityName + '</th>';
                html += '</tr>';
                html += '<tr>';
                html += '<th>Код</th>';
                html += '<th>Факультет</th>';
                html += '<th>Гранд</th>';
                html += '<th>Контракт</th>';
                html += '<th>Проходной Гранд</th>';
                html += '<th>Проходной Контракт</th>';
                html += '</tr>';
                html += '</thead>';
                $.each(result, function (key, item) {
                    if (id!=item.universityId) {
                        id = item.universityId;
                        html += '<thead>';
                        html += '<tr>';
                        html += '<th colspan="8" class="text-center p-3">' + item.universityName + '</th>';
                        html += '</tr>';
                        html += '<tr>';
                        html += '<th>Код</th>';
                        html += '<th>Факультет</th>';
                        html += '<th>Гранд</th>';
                        html += '<th>Контракт</th>';
                        html += '<th>Проходной Гранд</th>';
                        html += '<th>Проходной Контракт</th>';
                        html += '</tr>';
                        html += '</thead>';
                    }
                    html += '<tbody>';
                    html += '<tr>';
                    html += '<td>' + item.code + '</td>';
                    html += '<td>' + item.facultyName + '</td>';
                    html += '<td>' + item.grand + '</td>';
                    html += '<td>' + item.contract + '</td>';
                    html += '<td>' + item.grantPass + '</td>';
                    html += '<td>' + item.contractPass + '</td>';
                    html += '</tr>';
                    html += '</tbody>';
                })
                html += '</table>';
                $('#place_generating_id').html(html);
            }
        });
    });