Which storage API stores data per tab or per browser session and is cleared when the tab is closed?

Which storage API stores data per tab or per browser session and is cleared when the tab is closed?

• A. SessionStorage
• B. LocalStorage
• C. AppCache
• D. Geolocation API

Answer: (A)

The key idea is how Web Storage distinguishes lifetimes and where data lives. The session storage API stores data tied to a single browser tab. The data exists only while that tab (and its current browser session) is open, and it’s cleared as soon as you close the tab or end that session. This makes it ideal for temporary data that shouldn’t persist beyond the tab’s lifetime, such as multi-step form progress that you don’t want to carry over after closing the tab. In contrast, local storage keeps data across tabs and sessions until you explicitly delete it, which is not what the question describes. AppCache is a legacy mechanism for offline resources, not per-tab storage. The Geolocation API is unrelated to storage altogether, dealing with obtaining the device’s location.

The key idea is how Web Storage distinguishes lifetimes and where data lives. The session storage API stores data tied to a single browser tab. The data exists only while that tab (and its current browser session) is open, and it’s cleared as soon as you close the tab or end that session. This makes it ideal for temporary data that shouldn’t persist beyond the tab’s lifetime, such as multi-step form progress that you don’t want to carry over after closing the tab.

In contrast, local storage keeps data across tabs and sessions until you explicitly delete it, which is not what the question describes. AppCache is a legacy mechanism for offline resources, not per-tab storage. The Geolocation API is unrelated to storage altogether, dealing with obtaining the device’s location.