Peter VannTreehouse Moderator 35,061 Points
These might help:
This is a website I am working on that uses localStorage:
The site has a band setlist. The user can make an Event List and the data persists in localStorage.
From what I have tested, the Event List will persist until the user deletes it or the browser's cookies/cache is cleared, even if you close the browser and/or reboot the computer.
BTW, If you haven't done them yet, I recommend these Treehouse Tracks:
Front End Web Development
I hope that helps.
Stay safe and happy coding!