GTAjax is Generally-Targeted Ajax.
Ajax stands for Asynchronous JavaScript And XML.
Maybe you have see and have used it in some coding experience. And also, you have not found any inefficent, actually, common Ajax has its own limits in many ways, It depends on the environment heavily.
Mostly, you code one Ajax which can not run in another place with differences in Browser,Operating System,Bankend programming components，etc...
In order to comply with the differences, people creates many kinds of Ajax, amd so do I, luckily enough, I found one generally-targeted way to comply with all the differences...
GTAjax-5.7， Sat July 04, 2020
GTAjax-5.6, Wed Oct 31 21:57:26 CST 2018
GTAjax-5.4, 13:20 24 January 2016
Added GTAj.ti as track id for runtime positioning by line number.