HTML5 HTML5 Web Storage and APIs

Question 1

Which HTML5 Web Storage object stores data with no expiration date, persisting even after the browser is closed?

Accepted Answer

localStorage

Answer

sessionStorage

Answer

cookieStorage

Answer

cacheStorage

Question 2

What is the difference between localStorage and sessionStorage?

Accepted Answer

localStorage persists until cleared; sessionStorage clears when the tab closes

Answer

sessionStorage is larger; localStorage has a 5 KB limit

Answer

localStorage is per-domain; sessionStorage is per-user

Answer

They are identical in behavior

Question 3

Which method is used to store a value in localStorage?

Accepted Answer

localStorage.setItem(key, value)

Answer

localStorage.store(key, value)

Answer

localStorage.save(key, value)

Answer

localStorage.put(key, value)

Question 4

What does the Geolocation API's getCurrentPosition() method do?

Accepted Answer

Retrieves the device's current geographic coordinates asynchronously

Answer

Returns a map of the current location

Answer

Sets the browser's location preference

Answer

Continuously tracks position changes

Question 5

Which HTML5 API enables communication between a web page and a server without page reload?

Accepted Answer

All of the above

Answer

XMLHttpRequest / Fetch API

Answer

WebSocket API

Answer

Server-Sent Events

Question 6

What is the purpose of the HTML5 History API?

Accepted Answer

Allows manipulation of the browser session history without page reloads

Answer

Records the user's browsing history

Answer

Provides access to cached pages

Answer

Controls browser back/forward button behavior