Giving the user the option
As some users will have JavaScript enabled or wont know how to disable it I propose a second option for a user. There should be an accessibility option to turn off JavaScript or at least the AJAX part. It is good practice to have accessibility options for a website. Adding in the option to disable potentially inaccessible scripts will enable the user to make a choice about the way they interact with the site. This choice must be easily discoverable and deployed appropriately.
In the tutorial I propose inserting the option by a JavaScript function when the page is initially loaded. This prevents confusion for users with JavaScript disabled as no option will be displayed.