Why do i get the error "'Page_Validators' is undefined" when I switch the IE Browser Mode from IE9 to IE8?

4.6k Views Asked by threadster At 03 April 2025 at 17:26

I am developing a web page using ASP.NET unobtrusive validation. When I view my page in IE9 using the default IE9 Browser Mode, the page works as expected. However, when I simply switch the Browser Mode from IE9 to IE8, I receive the following JavaScript error as the page reloads:

"Error: 'Page_Validators' is undefined"

Unobtrusive validation requires a ScriptResourceMapping named "jquery". That is in place. I am also using a <script> tag in the master page to include jquery on all pages.

Also, I have an empty tag on the master page to enable my user control to load other javascript via a ScriptManagerProxy tag in the control's markup.

Relevant markup on master page:

<%@ Master Language="C#" AutoEventWireup="true" Inherits="Site" Codebehind="Site.master.cs" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">

<script src="Scripts/jquery-1.8.3.min.js" type="text/javascript"></script>

<title></title>

<asp:ContentPlaceHolder id="head" runat="server">
</asp:ContentPlaceHolder>

</head>

Any ideas?

Original Q&A

There are 1 best solutions below

Aristos On 23 January 2013 at 15:50

It is possible that you call it before is loaded from the JavaScript files. Try to warp it with the ready

$(document).ready(function() {
   $('#CoappPersonalInformationForm.failureNotification').each(function () 
     {
        ValidatorEnable(this, false); 
     });
});

Why do i get the error "'Page_Validators' is undefined" when I switch the IE Browser Mode from IE9 to IE8?

There are 1 best solutions below

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