How to remove an item from sessionStorage in JavaScript
Łukasz Holeczek
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Removing items from sessionStorage is essential for cleaning up temporary data and managing storage space within browser sessions.
As the creator of CoreUI with over 25 years of JavaScript experience, I’ve used sessionStorage cleanup extensively in production applications for form data management and temporary state handling.
The most straightforward approach uses the removeItem() method with the specific key you want to delete.
This method provides precise control over sessionStorage cleanup while maintaining other stored data.
Use sessionStorage.removeItem() with the key name to delete specific items from session storage.
sessionStorage.removeItem('username')
This code removes the item with key ‘username’ from sessionStorage, freeing up the storage space while leaving other sessionStorage items intact. The method works silently - if the key doesn’t exist, no error is thrown and the operation completes successfully. This is particularly useful for cleaning up temporary form data, wizard steps, or any session-specific information that’s no longer needed.
Best Practice Note:
This is the cleanup approach we use in CoreUI form components for managing temporary session data. Always remove sessionStorage items when they’re no longer needed to prevent storage bloat and maintain optimal performance.
