Problem in GET request using ajax/history api.?

Question

AJAX

Good evening, there is ajax+history api code (taken from public access) that performs actions on the site without reloading the page, but ran into a problem when performing a GET action, many requests are made. Thanks in advance.
https://mixta.ru/c/a65a6ab001

Answer 1

1) The code is in the studio, there are special buttons for this in the question / answer design
2) I don’t see any get action there at all, only post
2) The details do not hurt that they pressed that the console writes that it is returning ...