How can I change the number on the site through browser extensions (for example, Greasemonkey / Tampermonkey)?

Question

JavaScript

Hi all. You need to change the number on the site. I did it with my hands through the code review without any problems, but after refreshing the page everything is reset. Greasemonkey / Tampermonkey extensions were advised, installed, but how to change the number through it? Copy the entire code of the page, change the number there and paste it into this plugin?

Answer 1

In a script, you write something like this:
Well, this is so, the most simple, crutch option