我有一张表格，每行都有一个隐藏字段。单击该行中的按钮时，我需要提醒隐藏字段的值。我有以下jQuery代码。但这行不通。我们如何使其工作？

<script>
    $(document).ready(function () {

        //"Show ID" for Associate Button Click
        $('.resultGridTable tr > td > .actionButtonNational').click(function () {
            //"this" means show ID button
            //Traversing to get the parent row and then the required columns in the row
            var associateID = $(this).parents('tr:first > .wrapperDivHidden input[type=hidden]').val();
            alert(associateID);
            return false;
        });
    });
</script>

HTML

<td>
    XXXXX
    <input type="submit" name="ctl00$detailContentPlaceholder$grdSubscribedAssociates$ctl04$btnNational"
                        value="Show ID" id="detailContentPlaceholder_grdSubscribedAssociates_btnNational_2"
                        class="actionButtonNational" style="color: White; background-color: #A7A7A6;
                        font-weight: bold; width: 60px" />
    <div id="wrapperDivHidden" class="wrapperDivHidden">
        <input type="hidden" name="ctl00$detailContentPlaceholder$grdSubscribedAssociates$ctl04$hdnAssociateID"
                            id="detailContentPlaceholder_grdSubscribedAssociates_hdnAssociateID_2"value="789345680" />
    </div>
</td>