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Hi, I am using Ajax control tool kit popup extender.. the popup has a cancel button.. when i click the cancel button it gives error-- 'AjaxControlToolKit Undefined..' it's a Microsoft JScript Error..<br />
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i
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Hi, I am using Ajax control tool kit popup extender.. the popup has a cancel button.. when i click the cancel button it gives error-- 'AjaxControlToolKit Undefined..' it's a Microsoft JScript Error..

i

AjaxControlToolKit popup extender

Asynchronous JavaScript and XML (AJAX) is a group of interrelated Web development techniques used on the client-side to create asynchronous Web applications. With AJAX, web applications can send data to and retrieve from a server asynchronously (in the background) without interfering with the display and behavior of the existing page. HTML and CSS can be used in combination to mark up and style information. The Document Object Model (DOM) is accessed with JavaScript to dynamically display and allow interaction with the information presented.

AJAX

The successor to Active Server Pages, ASP.NET websites utilize the .NET framework to produce dynamic, data and content-driven web applications and services. ASP.NET code can be written using any .NET supported language. As of 2009, ASP.NET can also apply the Model-View-Controller (MVC) pattern to web applications

ASP.NET

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.