What is Local Storage?

What is Local Storage?

• A. A server-side caching layer.
• B. In the context of web browsing, information taken from a webpage interaction and stored on a local computer.
• C. A cloud-based storage service.
• D. A database transaction log.

Answer: (B)

Local storage is a browser feature that keeps data on the user’s device for a webpage interaction. It’s part of the Web Storage API and stores information as key–value pairs on the local computer, bound to the site’s origin. The data persists across page reloads and remains even after the browser is closed, until you (or your script) clear it. This makes it handy for saving things like user preferences or UI state without contacting the server. It’s client-side only and not automatically sent with HTTP requests, and it isn’t cloud storage or a database transaction log. It’s also not ideal for sensitive information, since any script from the same origin can read it if XSS exists, so you should treat it as a convenience storage for non-sensitive data.

Local storage is a browser feature that keeps data on the user’s device for a webpage interaction. It’s part of the Web Storage API and stores information as key–value pairs on the local computer, bound to the site’s origin. The data persists across page reloads and remains even after the browser is closed, until you (or your script) clear it. This makes it handy for saving things like user preferences or UI state without contacting the server. It’s client-side only and not automatically sent with HTTP requests, and it isn’t cloud storage or a database transaction log. It’s also not ideal for sensitive information, since any script from the same origin can read it if XSS exists, so you should treat it as a convenience storage for non-sensitive data.