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JavaScript: localStorage

A short, tested JavaScript example for localstorage. Copy it and adjust the names and paths for your project.

JavaScript
localStorage.setItem("theme", "dark");
const theme = localStorage.getItem("theme");     // null if missing
localStorage.removeItem("theme");

// objects must be serialized
localStorage.setItem("user", JSON.stringify({ id: 1 }));
const user = JSON.parse(localStorage.getItem("user") ?? "null");

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