Question

我在选择下拉列表时遇到问题，它在选择时给出了空值

以下是代码：

DROP TABLE TempTable

的javascript：

    <asp:GridView ID="gridview1" runat="server" AllowPaging="false"  Width="99%" >

    <asp:BoundField DataField="NAME" HeaderText ="Name" HtmlEncode="false"/>

    <asp:BoundField DataField="ID " HeaderText ="ID " HtmlEncode="false"/>

      <asp:TemplateField HeaderText ="Location">
      <ItemTemplate>

     <asp:DropDownList ID="ddlfruitAgent" runat="server" onchange="Store_Location_onChange(this)" />
     <asp:TextBox ID="StoreLocation" runat="server" TextMode="MultiLine" Rows="2" style="width:97%;display:none" />
      </ItemTemplate>
       </asp:TemplateField>

Answer 1

由于您将this作为对象的引用传递，因此您可以这样做

function Store_Location_onChange(objThis) {
    if (objThis.value == "0") {
        objThis.nextElementSibling.style.display = "";
    }
    else {
        objThis.nextElementSibling.value = "";
        objThis.nextElementSibling.style.display = "none";
    }
}

或其他方式是

function Store_Location_onChange(objThis) {
    if (objThis.value == "0") {
        document.getElementById("<%= StoreLocation.ClientID %>").style.display = "";
    }
    else {
        documentgetElementById("<%= StoreLocation.ClientID %>").value = "";
        document.getElementById("<%= StoreLocation.ClientID %>").style.display = "none";
    }
}

希望这有帮助！

选中下拉列表选项后显示隐藏文本框

1 个答案: