Session Storage: Values persist only as long as the window or tab in which they stored. Values are only visible within the window or tab that created them. Local Storage: Values persist window and browser lifetimes. Values are shared across every window or tab running at the same origin. So, by reading and understanding this … Read more
The easiest way in ES2015+ is: const items = { …localStorage };
Mozilla implements it like cookies: DOM Storage can be cleared via “Tools -> Clear Recent History -> Cookies” when Time range is “Everything” (via nsICookieManager::removeAll) https://developer.mozilla.org/en/DOM/Storage In DOM Storage it is not possible to specify an expiration period for any of your data. All expiration rules are left up to the user. In the case … Read more
You can use the key method. localStorage.key(index) returns the indexth key (the order is implementation-defined but constant until you add or remove keys). for (var i = 0; i < localStorage.length; i++){ $(‘body’).append(localStorage.getItem(localStorage.key(i))); } If the order matters, you could store a JSON-serialized array: localStorage.setItem(“words”, JSON.stringify([“Lorem”, “Ipsum”, “Dolor”])); The draft spec claims that any object … Read more
Pure JS based simple localStorage polyfill: Demo: http://jsfiddle.net/aamir/S4X35/ HTML: <a href=”#” onclick=”store.set(‘foo’,’bar’)”>set key: foo, with value: bar</a><br/> <a href=”#” onclick=”alert(store.get(‘foo’))”>get key: foo</a><br/> <a href=”#” onclick=”store.del(‘foo’)”>delete key: foo</a> JS: window.store = { localStoreSupport: function() { try { return ‘localStorage’ in window && window[‘localStorage’] !== null; } catch (e) { return false; } }, set: function(name,value,days) { … Read more
Apparently this is by design. When Safari (OS X or iOS) is in private browsing mode, it appears as though localStorage is available, but trying to call setItem throws an exception. store.js line 73 “QUOTA_EXCEEDED_ERR: DOM Exception 22: An attempt was made to add something to storage that exceeded the quota.” What happens is that … Read more
Here is a simple way to mock it with Jasmine: let localStore; beforeEach(() => { localStore = {}; spyOn(window.localStorage, ‘getItem’).and.callFake((key) => key in localStore ? localStore[key] : null ); spyOn(window.localStorage, ‘setItem’).and.callFake( (key, value) => (localStore[key] = value + ”) ); spyOn(window.localStorage, ‘clear’).and.callFake(() => (localStore = {})); }); If you want to mock the local storage … Read more
This is how I use it across domains… Use an iframe from your parent domain – say parent.example Then on each child.example domain, just do a postMessage to your parent.example iframe All you need to do is setup a protocol of how to interpret your postMessage messages to talk to the parent.example iframe.
There are a few options: Read and write files: https://flutter.io/reading-writing-files/ SQLite via a Flutter plugin: https://github.com/tekartik/sqflite SQLCipher via a Flutter plugin: https://github.com/drydart/flutter_sqlcipher SharedPreferences via a Flutter plugin: https://github.com/flutter/plugins/tree/master/packages/shared_preferences Localstore via a Flutter plugin: https://pub.dev/packages/localstore
Looking at the Apple, Mozilla and Mozilla again documentation, the functionality seems to be limited to handle only string key/value pairs. A workaround can be to stringify your object before storing it, and later parse it when you retrieve it: var testObject = { ‘one’: 1, ‘two’: 2, ‘three’: 3 }; // Put the object … Read more