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"Microsoft JScript runtime error: Object doesn't support this property or method" when using Telerik and Mootools

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Grid

This is a migrated thread and some comments may be shown as answers.

Ian asked on 05 Nov 2008, 01:19 PM

A very basic page
* telerik script manager
* mootools 1.1 (with array.foreach fix for asp.net)
* linkbutton (for postback)
* empty radgrid

In IE7, after postback I get "Microsoft JScript runtime error: Object doesn't support this property or method" on a simple "document.getElementbyId()"

The stack trace was something like
unload handlers -> grid dispose metod -> $get -> getElementById -> error

Page

    
            <%@ Page Language="C#" AutoEventWireup="true" CodeFile="test.aspx.cs" Inherits="Test_Default" %> 
        
            <%@ Register assembly="Telerik.Web.UI" namespace="Telerik.Web.UI" tagprefix="telerik" %> 
        
            <!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>Untitled Page</title> 
        
            </head> 
        
            <body> 
        
            <form id="form1" runat="server"> 
        
                <telerik:RadScriptManager ID="RadScriptManager1" Runat="server" /> 
        
                <script type="text/javascript" src="mootools-1-11.js"></script> 
        
                <asp:linkbutton ID="Button1" runat="server" text="Submit" onclick="Button1_Click" /> 
        
                <telerik:RadGrid ID="grid" runat="server" EnableAjaxSkinRendering="False"> 
        
                    <MasterTableView> 
        
                        <Columns> 
        
                        </Columns> 
        
                    </MasterTableView> 
        
                </telerik:RadGrid> 
        
            </form> 
        
            </body> 
        
            </html>

Code behind

    
            using System; 
        
            using System.Collections; 
        
            using System.Web; 
        
            public partial class Test_Default : System.Web.UI.Page 
        
            { 
        
                protected void Page_Load( object sender, EventArgs e ) 
        
                { 
        
                    // EMPTY 
        
                } 
        
                protected void Button1_Click( object sender, EventArgs e ) 
        
                { 
        
                    // EMPTY 
        
                } 
        
            }

Any ideas?

5 Answers, 1 is accepted

answered on 05 Nov 2008, 04:04 PM

As a start -- indeed MooTools has a problem with MS ASP.NET AJAX, namely Array and foreach method. But, there is a fix for that and with it MooTools works fine with MS ASP.NET AJAX.

Now, as soon as the Telerik script manager is added to the page the problem appears. Moreover we tried several (but not all) different controls and only RadGrid was triggering this error.

And as mentioned this appears in IE and not in FireFox or Safari.

Thus, I do not consider this to be a problem of MooTools alone, but a combination of MooTools, Telerik's extension to the prototypes / constructors and something in MSIE.