Show some thing once

Hi,
I'm looking for a way to show a dive once a user to notify for or something else, please help me about it,
here a same thread, but it is not working on chrome
https://forums.digitalpoint.com/thr…er-day-using-javascript-with-cookies.1175576/
please suggest me idea
Show some thing once

See original post by vOlLvEriNe