Catching authorization errors with JQuery when using Forms Authentication in ASP.NET MVC 3

When there's an authentication error (timeout or invalid credentials) in ASP.NET MVC 3, the framework returns the login pages as a result of this. What if you want to catch the error in JQuery and handle it client side. Well, you can't. Unless, of course, you read this article.

Kudos to http://trycatchfail.com