无法获取 ASP 中的隐藏字段值

Question

我的 asp 文件中有一个隐藏字段，我使用 JavaScript 函数为隐藏字段赋值。但是，我无法获得该值。

我必须获取隐藏字段值并传递给查询。

我的JS代码：

function checkboxlimit() {
    for (j = 0; j < checkboxes.length; j++)
    {
        if (checkboxes[j].checked == true)
        {
            alert(checkboxes[j].value)// this one coming?
            document.getElementById("Hidden1").value = checkboxes[j].value
            alert("Check" +document.getElementById("Hidden1").value)
        }
    }
}

HTML 和 ASP:

Do Until RS.EOF%>
<tr>
    <td valign="middle" align="center" class="style1">
        <input  type="checkbox" name="CompanyID_Merge" value="<%=RS("CompanyID")%>" onchange="checkboxlimit();" />
    </td>
    <td valign="middle" align="center"  class="style1">
        <a href="/main/league_info/companies/company_info.asp?CompanyID=<%=RS("CompanyID")%>"target="_blank"><%=RS("CompanyName")%></a>
    </td>
</tr>
<%               
    RS.MoveNext
Loop
%>
</table>
<%
End If
RS.Close
SET RS = Nothing
Conn.Close
%>
<input id="Hidden1" type="hidden" name="CompanyID_hidden" runat="server" value=""/> 
<% 
    CompanyID_Merge=Request.Form("CompanyID_hidden")
    Response.Write("chk" & Request.Form("CompanyID_hidden"))
    Conn.Open strConn
    SQL = "SELECT"
    SQL = SQL & " Projects.CompanyID, Projects.ProjectID, Projects.ProjectName, Projects.SeasonYear, Seasons.Season, Activities.ActivityName,"
    SQL = SQL & " FROM Projects"
    SQL = SQL & " AND ProjectAssociations.RenewedProjectID = " & CheckNumber(ProjectID)
    SQL = SQL & " WHERE Projects.CompanyID = " & CheckNumber(CompanyID_Merge)

Answer 1

只有在提交表单或使用AJAX后才能在服务器端获取值。

也就是说，您不需要将复选框值分配给隐藏字段，您可以在经典 ASP 中使用以下名称获取所有选中复选框的值：

<%
    Response.Write("selected " & Request.Form("CompanyID_Merge").Count & " items<br />")
    For x=1 To Request.Form("CompanyID_Merge").Count
        Response.Write(Request.Form("CompanyID_Merge").Item(x) & "<br />")
    Next
%>

无法获取 ASP 中的隐藏字段值

Unable to get hidden field value in ASP

javascript

asp-classic