Javascript in other language pages

Hello if someone inserts English Javascript code into their webpage from a country who’s main speaking languages aren’t English. Will their server from another country be able to execute the English Javascript code on their web pages there? Reason am asking is someone from another language wants my help with Javascript code and I don’t know if they’ll be able to even use it if I help them, in their server. Please let me know if code on other servers usually translates code written in other languages.

Thank you very much for your help those who knows how this usually works.

There is only one JavaScript. It is the same no matter what language the author happens to speak. Your JavaScript code is executed by the web browser, not by a server, as well.