Window.localStorage
The localStorage
property allows you to access a local Storage
object. localStorage
is similar to sessionStorage
. The only difference is that, while data stored in localStorage
has no expiration time, data stored in sessionStorage
gets cleared when the browsing session ends—that is, when the browser is closed.
Syntax
myStorage = localStorage;
Value
A Storage
object.
Example
The following snippet accesses the current domain's local Storage
object and adds a data item to it using Storage.setItem()
.
localStorage.setItem('myCat', 'Tom');
Note: Please refer to the Using the Web Storage API article for a full example.
Specifications
Specification | Status | Comment |
---|---|---|
Web Storage (Second edition) The definition of 'localStorage' 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: Starting with 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. Safari Mobile's Private Browsing mode also prevents writing to localStorage
entirely.
See also
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/window/localstorage