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Editorial Team
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Asked: 2026-05-13T07:47:42+00:00

calling a js function using onclick… onclick=SubmitAge(66, ‘ctl00_MainContent_arTo_upAgeRange’) function just calls an updatePanel from

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calling a js function using onclick…

onclick="SubmitAge(66, 'ctl00_MainContent_arTo_upAgeRange')"

function just calls an updatePanel from the client… but its saying object expected at the onclick= part!!!

here is the function, is there anything wrong with the code?

function SubmitAge(age, UpdatePanelID) {
    $get('HiddenAge').value = age;
    __doPostBack(UpdatePanelID);
}

EDIT: THE SUBMITAGE FUNCTION IS INSIDE A .JS FILE (AGERANGE.JS) AND ONLY WHEN MOVED HERE DOES IT STOP WORKING: HERE IS THE LINKING METHOD/HEADERS FROM THE ASCX USERCONTROL INWHICH IT IS ALL CONTAINED…

%@ Control Language=”VB” ClassName=”AgeRange” %

%@ Register Assembly=”AjaxControlToolkit” Namespace=”AjaxControlToolkit” TagPrefix=”AjaxCT” %

script src=”AgeRange.js” type=”text/javascript” /script

(arrow tags removed here as it wont display, hint: stackoverflow!!!)

im printing it like this from the server…

Public Sub AppendToSB(ByRef sb As StringBuilder, ByVal CurNo As Byte, Optional ByVal clickedNo As Byte = 0)
    Dim sConfirmClick = ""

    If clickedNo = CurNo Then   ' maybe dont make it clickable...
        sConfirmClick = "return confirm('The number " & CurNo.ToString & " is already selected, are you sure you want to select it again?');"
    End If

    sb.Append("<a href=""#"" onclick=""" & sConfirmClick & "SubmitAge(" & CurNo.ToString & ", '" & upAgeRange.ClientID &
     "')"" runat=""server"">" & CurNo.ToString & "</a>")

End Sub
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1 Answer

  1. Editorial Team

    Complete rewrite of my post after several clarifications:

    The problem is that the ASPX page is referencing an ASCX user control that is located in a different folder. That ASCX control has an HTML <script> tag that is using a relative path to the JS file.

    The solution is to correctly resolve the URL to the JS file by using some extra code:

    <script src="<%= ResolveClientUrl("MyScriptLibrary.js") %>" type="text/javascript">
</script>

    To prevent the script file from being referenced multiple times I recommend using the approaches specified in this other post:
    ASP.NET dynamically insert code into head

    Here’s what it looks like in the user control’s code:

    // Register a script reference: 
Page.ClientScript.RegisterClientScriptInclude(GetType(), "myLibraryScript", "~/Scripts/MyScriptLibrary.js");
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