Kendo Sortable submit to server

gistfile1.js

$(document).ready(function () {
            var sortableList = $('.sortable-list').kendoSortable({
                hint: function(element){
                    return element.clone().addClass('sortable-list-hint');
                },
                cursor: "n-resize"
            });


            $('#sortable-submit').on('click', function (e) {
                e.preventDefault();
                var items = sortableList.data('kendoSortable').items();
                var data = $.map(items, function (item, index) {
                    var id = $(item).data('id');
                    return {
                        'Id': id,
                        'ListOrder': index
                    };
                });

                var dataToBeSubmitted = JSON.stringify(data);

                $.ajax({
                    url: $('.sortable-list').data('submit-url'),
                    type: 'POST',
                    data: dataToBeSubmitted,
                    dataType: "json",
                    contentType: "application/json; charset=utf-8",
                    error: function () {
                        alert("There is a communication error with updating");
                    },
                    success: function (result) {
                        if (result.Success) {
                            window.location = $('.sortable-list').data('success-url');
                        }
                    }
                });

            });

        });

gistfile2.txt

<ul class="sortable-list" data-submit-url="/items/listOrder" data-success-url="/items/index">
    @foreach (var item in Model)
    {
        <li data-id="@item.Id">
            <span class="glyphicon glyphicon-resize-vertical"></span>
            @item.Name
        </li>
    }
</ul>