What is SessionStorage?
What is SessionStorage and how does it work?
SessionStorage is another storage method similar to LocalStorage, but with one crucial difference - it only retains data during the current session. When the user closes the browser or opens a new tab/window, the data is lost. This method is used when data needs to persist only while the session remains active.
SessionStorage is particularly effective for temporary data storage needs, such as preserving form steps or interface states during a single browsing session.
SessionStorage operates on the same principle as LocalStorage, but data persists only for a single session.
// To write data
sessionStorage.setItem('key', 'value');
// To read data
const value = sessionStorage.getItem('key');
// To remove data
sessionStorage.removeItem('key');
// Clear all data
sessionStorage.clear();
This code is identical to LocalStorage implementation, but remember: SessionStorage only maintains data until you close the tab or browser.
Advantages:
Disadvantages:
SessionStorage proves valuable when data retention is only required during an active session. The most common use cases include:
SessionStorage is extremely useful for temporary data storage with minimal security concerns. Unlike LocalStorage, it doesn't provide long-term persistence options. In our next article, we'll explore using IndexedDB for storing large, structured data in the browser.