JavaScript functions documentation

Hello everybody,

I am new to the OXID eShop and its functionality.
I found the inline documentation for the php classes.

What I didn’t find is a documentation for the JavaScript functions.
Is there a documentation for the JavaScript function?

In detail I want to make a AJAX call to retrive futher information after a click on a button. I found a function oxAjax.ajax under /out/mobile/src/js/widget/oxajax.js

If someone knows a good tutorial on AJAX calls in OXID and is willing to post it, that would be fantastic. I am using the CE 4.10.2

Thank you for your help and have a great day,

accname