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For Yarn 2+ docs and migration guide, see yarnpkg.com.

Package detail

local-storage-adapter

suprMax359MIT2.0.0

A simplified localStorage API that just works

localstorage, local-storage, persistance

readme

local-storage

A simplified localStorage API that just works

Forked from https://github.com/bevacqua by Nicolás Bevacqua which is no longer maintained.

Install

Using npm

npm install local-storage --save

Using bower

bower install localstorage --save

API

The API is a simplified way to interact with all things localStorage. Note that when localStorage is unsupported in the current browser, a fallback to an in-memory store is used transparently.

For that reason, consider that local-storage values might evaporate across page views.

ls(key, value?)

If a value argument is provided, acts as ls.set. When value isn't provided, acts as ls.get.

Example
var ls = require('local-storage');

ls('foo');
// <- null

ls('foo', 'bar');
// <- true

ls('foo');
// <- 'bar'

ls.get(key)

Returns value under key in local storage. Equivalent to ls(key). Internally parses the value from JSON before returning it.

Example
var ls = require('local-storage');

ls('foo', 'bar');
// <- true

ls.get('foo');
// <- 'bar'

ls.set(key, value)

Persists value under key in local storage. Equivalent to ls(key, value). Internally converts the value to JSON.

Returns whether an error was thrown by the browser when trying to persist the value. Failure typically means a QuotaExceededError was thrown.

Example
var ls = require('local-storage');

ls.set('foo', 'bar');
// <- true

ls.get('foo');
// <- 'bar'

ls.remove(key)

Removes key from local storage. Returns true if the property was successfully deleted, and false otherwise.

Example
var ls = require('local-storage');

ls.set('foo', 'bar');
// <- true

ls.remove('foo');
// <- true

ls.clear()

Clears local storage.

Example
var ls = require('local-storage');

ls.set('foo', 'bar');
ls.set('baz', 'tar');
ls.clear();

ls.on(key, fn)

Listen for changes persisted against key on other tabs. Triggers fn when a change occurs, passing the following arguments.

  • value: the current value for key in local storage, parsed from the persisted JSON
  • old: the old value for key in local storage, parsed from the persisted JSON
  • url: the url for the tab where the modification came from
Example

Open a page with the following snippet in multiple tabs. The storage event will trigger on all tabs except for the one that persisted the change.

var ls = require('local-storage');

ls.on('foo', storage);
ls.set('foo', 'bar');

function storage (value) {
  console.log('some other tab changed "foo" to ' + value);
}

ls.off(key, fn)

Removes a listener previously attached with ls.on(key, fn).

Example
var ls = require('local-storage');

ls.on('foo', storage);
ls.off('foo', storage);

function storage (value) {
  console.log('some other tab changed "foo" to ' + value);
}

License

MIT

changelog

2.0.0

Fix a bug where old Chrome and IE11 would crash in "secure" mode. Don't pollute global scope in NodeJS anymore. Drop support for IE < 10

1.4.1

Fix a bug where local-storage would throw in IE when using the file:// protocol

1.4.0 Clear Skies

  • Added .clear method

1.3.1 Pony Up

  • Added to Bower registry as localstorage

1.2.0 Pigtails

  • Fixed a bug which prevented the change tracking API from parsing the JSON values in localStorage

1.1.1 Meltdown

  • Fixed a bug in change tracking API where exceptions would be thrown

1.1.0 Band of Brothers

  • ls.set traps QuotaExceededError exceptions
  • ls.set returns whether persistance was succesful

1.0.0 IPO

  • Initial Public Release