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The removeItem() method of the Storage interface, when passed a key name, will remove that key from the storage.
Syntax
storage.removeItem(keyName);
Parameters
- keyName
- A
DOMStringcontaining the name of the key you want to remove.
Returns
No return value.
Example
The following function creates three data items inside local storage, then remove the image data item.
function populateStorage() {
localStorage.setItem('bgcolor', 'red');
localStorage.setItem('font', 'Helvetica');
localStorage.setItem('image', 'myCat.png');
localStorage.removeItem('image');
}
Note: To see this used within a real world example, see our Web Storage Demo.
Specifications
| Specification | Status | Comment |
|---|---|---|
| Web Storage (Second edition) The definition of 'removeItem()' in that specification. |
Recommendation |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| localStorage | 4 | 3.5 | 8 | 10.50 | 4 |
| sessionStorage | 5 | 2 | 8 | 10.50 | 4 |
| Feature | Android | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
| Basic support | 2.1 | ? | 8 | 11 | iOS 3.2 |
All browsers have varying capacity levels for both localStorage and sessionStorage. Here is a detailed rundown of all the storage capacities for various browsers.
Note: since iOS 5.1, Safari Mobile stores localStorage data in the cache folder, which is subject to occasional clean up, at the behest of the OS, typically if space is short.