Can we extend inactivity session timeout with JS, as a user?

Question

Most or some websites have inactivity session timeouts — where you’ll be logged out of the website if you haven’t been active for certain amount of time.
let IST = inactivity session timeout
Can we extend the IST through JS: inject a JS code to the website, or do something in the console, or ....?
Is it possible to do that as a user?

Answer 1

malicious thought
anyway, try this :
https://flaviocopes.com/cookies/

Answer 2

const date = new Date()
date.setHours(date.getHours() + 5)
document.cookie = 'name=Flavio; expires=' + date.toUTCString()
Looks like it might be this one from what I read, on that article Gordon shared with me.

Answer 3

You can't alter the object of session, since the session cookie is encrypted and can only be processed by original server