Original application code of ajax in joomla

Ajax is rarely seen in joomla. I have mentioned that jquery is used for implementation. for applications that verify that the user name cannot be repeated, the mailbox cannot be repeated, and the linked menu, etc, ajax is inevitable

Today, I am going to talk about how to implement ajax using the mootools javascript library that comes with joomla. because it is a built-in library, you don't have to worry about jquery. how can we implement it, first, create an ajax get button, which is generally used in component Editing. Therefore, the file is generally used in views \ Your View \ tmpl \ default. php:
The code is as follows:

$ Doc = & JFactory: getDocument ();
$ Script = <