Best practices for loading page content via AJAX request in Rails3?

Question

Suppose you have a page with two columns of content. For whatever reason, you wish to retrieve the HTML content of one of those columns after the page has loaded, via an AJAX re

Answer 1

There is a simple way ofcource, just add respond_to :html, :js to your controller and create *.js.erb views in your app/views/ directory. Your controller will then be able to respond to javascript format and you can write javascript with ruby code in *.js.erb files.
Check this out: Unobtrusive javascript in Rails 3