Can I use a browser extension to write in the console of another site?

Question

JavaScript

When you click on the extension in the upper right corner, the script fires and writes in the developer console on another site! Let's say the Google site is open , when you click on the extension icon, it writes alert (123) in the Google site console and a window pops up on the Google site! Is it possible and how? How to make the extension write in the console of the Google site or in general on other sites!

Answer 1

You have already been given a link to https://developer.chrome.com/extensions/content_scripts
Learn, try.
What you described is pretty easy to do, but no one will write the code for you.