ASP.NET MVC DropDownList PostBack Follow-up

In 2009, I wrote how to do “postbacks” with the ASP.NET MVC DropDownList control. I wrote the post in response to questions in the forums, and lately that particular article has had a lot of traffic. Now, I don’t explain how to do true postbacks, only how to achieve the same effect. What you really do is use jQuery to retrieve the information.