storage-backed-object

storage-backed-object

Simple AngularJS service to store an object of key/values in HTML5 storage. This can be useful when wanting to store complex data that survives browser refreshes.

Usage

Add the dependency to your AngularJS app:

// Add module dependency 
angular.module('myApp', ['storage-backed-object']);

Then use it by injecting StorageBackedObject into your services:

angular.service('MyService', function(StorageBackedObject) {
  // Create the object
  var users = StorageBackedObject('users');

  // Store an item by key
  users.set(1234, {name: 'John Smith'})

  // Fetch an item by key
  var user = users.get('1234');

  // Remove an item by key
  users.remove(1234);
});    

Properties

Repeated calls to get returns the exact same value.

users.set(1234, {name: 'John Smith'});
users.get(1234) === users.get(1234); // True

This makes it safe to repeatedly call get for the same key, without using more memory.

Under the hood

All the values are fetched from HTML5 storage when the object is created. This behaviour may change in future versions.

Each value of the object is stored in a separate HTML5 storage item. This avoids long json encodes when setting elements.