sessionStorage core concepts

I just played with sessionStorage for the first time and it is easy:

• set it: sessionStorage.setItem("session_id", value);
• get it: var sid = sessionStorage.getItem("session_id");

 
 

sid above will be null if the code in the second bullet is run first before something like that of the first bullet. I confirmed that if you are able to populate "sid" and then you turn around and close and reopen the browser that sid will be null unless you repopulate it. Yay!