Get the value of a field from the next row in the table using jquery

When I edit a row of the table, I have the index of that row. Now I want to get the value of a field from the next row. I wrote the following code but it always returns undefined.please guide me.Note: The index of the rows may not be consecutive

Table:

<table id="Itemdatatable" class="table table-striped table-hover">        <thead>            <tr>                <th>Row</th><th>Col1</th>                <th>Col2</th>  <th> operation </th>          </tr>        </thead>        <tbody>                <tr>                                        <input id="Items_Index" name="Items.Index" type="hidden" value="0"><input name="Items[0].Item_InvoiceID" type="hidden" value="41446">                        <input name="Items[0].Item_StoreID" type="hidden" value="6">                                    .                                    .                                    .                    <input name="Items[0].Item_Percentage" type="hidden" value="0">                    <td> 1 </td>   <td> aaaa </td><td> bbbb </td><td> <a onclick="EditItemRow(0)">Edit</a> </td>                  </tr><tr>                                        <input id="Items_Index" name="Items.Index" type="hidden" value="1">                    <input name="Items[1].Item_InvoiceID" type="hidden" value="55546">                        <input name="Items[1].Item_StoreID" type="hidden" value="13">                .                                    .                                    .                    <input name="Items[1].Item_Percentage" type="hidden" value="10">                    <td>2</td><td>cccc</td><td>ddd</td>   <td><a onclick="EditItemRow(1)">Edit</a></td>                  </tr>                            .                            .                            .                      </tbody>    </table>

    function EditItemRow(rowIndex)    {     var currentRow = $('table#Itemdatatable').find('tr').eq(rowIndex);    var nextRowIndex = $(currentRow).next().find('input[name="Items.Index"]').val();    .    .    .    }