Is it somehow possible to store the copied (to clipboard) value in javascript

I am trying to get user ID's from my friend's discord server, but there is no way to get the user ID without copying it (or without trying to send a message to the user, but since I am just trying to do it with console, it is not possible to leave the server), so my approach is to simulate RMB on the user's profile and after that to simulate the LMB on 'Copy ID'

So my question is, can I actually store the copied value somewhere?

(he no more has the access to admin privileges on the server so it is not possible to add a bot)