Question

当我尝试点击我的日历控件时出现javascript错误。

html代码为：

        <td align="left" style="width:50%;"><asp:Label runat="server" CssClass="TextFontBold" ID="lblStartDate" Text="Start Date:"></asp:Label>
            <input type="text" class="TextBox" id="FromDate" runat="server"/><a href="javascript:ShowCalendar('FromDate1')"><img src="images/Calendar.png" border="0" /></a>
            <iframe src="Calendar.aspx?DateTextID=FromDate" style="display:none; top: 0px; left: 0px; width:245px; height:164px" frameborder="0" scrolling="no" name="FromDate1" id="FromDate1"></iframe>&nbsp;&nbsp;&nbsp;&nbsp;
            &nbsp;&nbsp;&nbsp;&nbsp;<asp:Label runat="server" CssClass="TextFontBold" ID="lblPromoStartTime" Text="Start Time:"></asp:Label>
        </td>

当我点击日历控件中的日期时，此代码将在代码隐藏中执行：

Protected Sub Calendar1_SelectionChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles Calendar1.SelectionChanged
    Dim strjscript As String = "<script language=""javascript"" type=""text/javascript"">"
    strjscript &= "window.top.document.getElementById('" & HttpContext.Current.Request.QueryString("DateTextID") & "').value = '" & Calendar1.SelectedDate & "';"
    strjscript &= "window.top.document.getElementById('" & HttpContext.Current.Request.QueryString("DateTextID") & "1').style.display = 'none';"
    strjscript = strjscript & "</script" & ">"
    Literal1.Text = strjscript
End Sub

我得到的错误是'window.top.document.getElementById（...）'为null或不是对象

我有一个名为FromDate的对象还有什么可能导致这个错误？

Answer 1

尝试使用window.parent.document.getElementById()代替window.top.document.getElementById()

Answer 2

你试过parent.document.getElementById(...)吗？只是一个想法...

按照pimvdb

的建议编辑

Javascript错误：'window.top.document.getElementById（...）'为null或不是对象

2 个答案: