How long will the data in sessionStorage remain accessible?

The data in sessionStorage is designed to be temporary and is specific to the current browser tab. This means that the data stored in sessionStorage will remain accessible as long as that particular tab is open. However, once the user closes the tab, all data associated with that tab will be cleared and rendered inaccessible. This feature makes sessionStorage particularly useful for maintaining data for short-term use during a browsing session without persisting it beyond that tab's lifecycle.

In contrast, the other options imply longer data retention than what sessionStorage offers. The option stating that data lasts forever is incorrect as sessionStorage is not permanent. Additionally, suggesting that data persists until the entire browser is closed or when the computer is shut off also misrepresents the nature of sessionStorage, as these scenarios would retain data in localStorage rather than sessionStorage. Therefore, the correct understanding lies in recognizing that the data is wiped from sessionStorage once the user closes the tab.