Web Storage

Definitions

1. A browser API providing two key-value stores — localStorage (persists until explicitly cleared) and sessionStorage (scoped to the browser tab's lifetime) — each offering ~5–10 MB of synchronous, string-only storage per origin.

   In plain English: A simple way for websites to save small pieces of data in your browser so they can remember things between visits.

   Example: "We stash the user's theme preference in localStorage so it persists across sessions without hitting the server."

Related Terms

• DOM
• Inspector
• Preload
• Ready State
• Session Storage
• Web Push
• Window
• Worker