What is the difference between localStorage, sessionStorage and cookies?

Point	localStorage	sessionStorage	Cookies
Lifetime	Until deleted	Until the tab closes	Until the expiry date
Size	About 5 MB	About 5 MB	About 4 KB
Sent to server	No	No	Yes, with every request

localStorage.setItem("theme", "dark");
console.log(localStorage.getItem("theme"));

Output:

Do not store passwords in any of them. See JavaScript Local Storage.

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