Storage.clear()

The clear() method of the Storage interface, when invoked, will empty all keys out of the storage.

Syntax

JavaScript

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storage.clear();

Parameters

No parameter.

Returns

No return value.

Example

The following function creates three data items inside local storage, then removes all of them using clear().

JavaScript

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function populateStorage() {
  localStorage.setItem('bgcolor', 'red');
  localStorage.setItem('font', 'Helvetica');
  localStorage.setItem('image', 'myCat.png');

  localStorage.clear();
}

Note: To see a real world example, see our Web Storage Demo.

Specifications

Specification	Status	Comment
Web Storage The definition of 'clear()' in that specification.	Recommendation

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.

License

© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/storage/clear

API Method Reference Référence Storage Web Storage