Logging out

Hi Dickey, I am trying to remove JWT from request so that one can logout even though there is no session. May I ask where does JWT is kept at the moment? I tried saving it to $window.sessionStorage.token or localStorage so that I can delete it when logout is clicked. However, the program does not like the '$' sign in front of window. Any clue you can give as to how I can remove JWT from request and where it is kept once logged in? Brower's memory? cookies? So many thanks.