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Editorial Team
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Asked: 2026-05-26T13:11:50+00:00

I got a js function that is defined in a JScript.js file. This file

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I got a js function that is defined in a JScript.js file. This file is defined on the masterpage. I am trying to call the sayhello function in this file from the inIframe.aspx page. This inIframe.aspx ‘runs’ inside the webform1.aspx page and the webform1.aspx page has a masterpage called masterWithJs.master.

when I hit :

http://localhost:8022/inIframe.aspx

I get an script error in firebug:

window.parent.sayhello is not a function

masterpage:

<%@ Master Language="C#" AutoEventWireup="true" CodeBehind="masterWithJs.master.cs"
    Inherits="IFrameJS.masterWithJs" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <asp:ContentPlaceHolder ID="head" runat="server">
        <script src="Scripts/JScript1.js" type="text/javascript"></script>
    </asp:ContentPlaceHolder>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
        </asp:ContentPlaceHolder>
    </div>
    </form>
</body>
</html>

webform1.aspx

<%@ Page Title="" Language="C#" MasterPageFile="~/masterWithJs.Master" AutoEventWireup="true"
    CodeBehind="WebForm1.aspx.cs" Inherits="IFrameJS.WebForm1" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
    <iframe id="myIframe" runat="server"></iframe>
</asp:Content>

inIframe.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="inIframe.aspx.cs" Inherits="IFrameJS.inIframe" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        this is the iframe page
    </div>
    </form>
    <script type="text/javascript">
        window.parent.sayhello();
    </script>
</body>
</html>

JScript1.js

function sayhello() {
    alert( 'hello');
}

webform1.aspx behindcode:

 public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            myIframe.Attributes.Add("src","inIframe.aspx");
        }
    }
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1 Answer

  1. Editorial Team

    Well Then i think i know the solution

    Try to create a utility function for the path of the script holding the function you call
    like this one 

       public static string ReferenceScript(string scriptFile)
    {
        //this line is just an example "~/include/js/" of the path of the js file
        var filePath = VirtualPathUtility.ToAbsolute("~/include/js/" + scriptFile);
        return "<script type=\"text/javascript\" src=\"" + filePath + "\"></script>";
    }

    and then call it in the master page HTML
    in the beginning of the body

    //EtPortalEntities.um_utility is an instanse of my name space you should put yours
<%= EtPortalEntities.um_utility.ReferenceScript("jquery.js")%>

    and then try i think it should work if its all about paths as i think

    Regards

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