Remembering Data with localStorage

Make a page remember things between visits with localStorage, save whole lists with JSON, start cleanly when nothing is saved yet, and know what sessionStorage and cookies are for and what must never be stored in the browser.

Updated

Cheat sheet: Remembering Data with localStorage
Category
JavaScript
Level
Apprentice
Tags
Cookie, JavaScript, JSON.parse(), JSON.stringify(), Local Storage, Session Storage, web-development