Check if user is logged in via JS?
5473
Check if user is logged in using JQuery
102231
Get the HTTP Basic Auth username from javascript?
48858
Understanding getlogin()
136460
Best way to detect when a user leaves a web page?
71243
Add "log out globally" button on user popup
15692
Is there a way to detect if a browser window is not currently active?
70714
Test if operating from live session or not inside a shell script
37385
How to know when and which user logged into the system under Mac OS X? Last is not enough!
99842
Check if images are loaded?
103277
Can a website know if I am running a userscript?
83644
Check user permissions through REST-API
28826
How do I check if someone accessed my computer?
31203
How do I display the user login in a popup?
49646
How to Protect Uploads, if User is not Logged In?
152051
add the user name to menu when user is logged in
36912
How can I verify users the first time they log in?
61677
set session - custom variable to store user id