hi ia want to ask about some cods [closed]

In fact, I need a JavaScript code that enables me to edit only one user and make modifications to it. I cannot do this step unless I specify the user name, but I do not know the way that makes me translate the command to the code to target the user with this name.

Since this class is shared with all users on the site
class =”fl hand nosel uzr uhtml”
And I cannot modify it because it will modify all the backgrounds and personal colors of the users. I hope that the matter is clear.

I can use the function, but I do not know what is the correct code to give a command to target a specific user name like user=”ali”
or user=”jamy”

just that what i want to