Exception or error:
I need currently Logged in Username in my WordPress Page ( HTML, JS). There must a standard function of php that I can call?
In header I can see uid , that can be used to fetch the username?
How to solve:
You can try the following peice of code to print the firstname of loggedin user.
if ( is_user_logged_in() )
{
global $current_user;
get_currentuserinfo();
echo $current_user->user_firstname;
}