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An AngularJS module that gives you access to the browsers local storage with cookie fallback
JavaScript HTML CSS

Merge pull request #234 from kkirsche/patch-1

Remove moot `version` property from bower.json
latest commit 478c1cdc01
@a8m a8m authored

README.md

angular-local-storage

An Angular module that gives you access to the browsers local storage, v0.2.1

NPM version Build status Test coverage Dependency Status License Downloads

Table of contents:

Get Started

(1) You can install angular-local-storage using 2 different ways:
Git: clone & build this repository
Bower:

$ bower install angular-local-storage --save

npm:

$ npm install angular-local-storage

(2) Include angular-local-storage.js (or angular-local-storage.min.js) from the dist directory in your index.html, after including Angular itself.

(3) Add 'LocalStorageModule' to your main module's list of dependencies.

When you're done, your setup should look similar to the following:

<!doctype html>
<html ng-app="myApp">
<head>

</head>
<body>
    ...
    <script src="//ajax.googleapis.com/ajax/libs/angularjs/1.1.5/angular.min.js"></script>
    <script src="bower_components/js/angular-local-storage.min.js"></script>
    ...
    <script>
        var myApp = angular.module('myApp', ['LocalStorageModule']);

    </script>
    ...
</body>
</html>

Configuration

setPrefix

You could set a prefix to avoid overwriting any local storage variables from the rest of your app
Default prefix: ls.<your-key>

myApp.config(function (localStorageServiceProvider) {
  localStorageServiceProvider
    .setPrefix('yourAppName');
});

setStorageType

You could change web storage type to localStorage or sessionStorage
Default storage: localStorage

myApp.config(function (localStorageServiceProvider) {
  localStorageServiceProvider
    .setStorageType('sessionStorage');
});

setStorageCookie

Set cookie options (usually in case of fallback)
expiry: number of days before cookies expire (0 = does not expire). default: 30
path: the web path the cookie represents. default: '/'

myApp.config(function (localStorageServiceProvider) {
  localStorageServiceProvider
    .setStorageCookie(45, '<path>');
});

setStorageCookieDomain

Set the cookie domain, since this runs inside a the config() block, only providers and constants can be injected. As a result, $location service can't be used here, use a hardcoded string or window.location.
No default value

myApp.config(function (localStorageServiceProvider) {
  localStorageServiceProvider
    .setStorageCookieDomain('<domain>');
});

For local testing (when you are testing on localhost) set the domain to an empty string ''. Setting the domain to 'localhost' will not work on all browsers (eg. Chrome) since some browsers only allow you to set domain cookies for registry controlled domains, i.e. something ending in .com or so, but not IPs or intranet hostnames like localhost.

setNotify

Send signals for each of the following actions:
setItem , default: true
removeItem , default: false

myApp.config(function (localStorageServiceProvider) {
  localStorageServiceProvider
    .setNotify(true, true);
});

Configuration Example

Using all together

myApp.config(function (localStorageServiceProvider) {
  localStorageServiceProvider
    .setPrefix('myApp')
    .setStorageType('sessionStorage')
    .setNotify(true, true)
});

API Documentation

isSupported

Checks if the browser support the current storage type(e.g: localStorage, sessionStorage).
Returns: Boolean

myApp.controller('MainCtrl', function($scope, localStorageService) {
  //...
  if(localStorageService.isSupported) {
    //...
  }
  //...
});

getStorageType

Returns: String

myApp.controller('MainCtrl', function($scope, localStorageService) {
  //...
  var storageType = localStorageService.getStorageType(); //e.g localStorage
  //...
});

set

Directly adds a value to local storage.
If local storage is not supported, use cookies instead.
Returns: Boolean

myApp.controller('MainCtrl', function($scope, localStorageService) {
  //...
  function submit(key, val) {
   return localStorageService.set(key, val);
  }
  //...
});

get

Directly get a value from local storage.
If local storage is not supported, use cookies instead.
Returns: value from local storage

myApp.controller('MainCtrl', function($scope, localStorageService) {
  //...
  function getItem(key) {
   return localStorageService.get(key);
  }
  //...
});

keys

Return array of keys for local storage, ignore keys that not owned.
Returns: value from local storage

myApp.controller('MainCtrl', function($scope, localStorageService) {
  //...
  var lsKeys = localStorageService.keys();
  //...
});

remove

Remove an item(s) from local storage by key.
If local storage is not supported, use cookies instead.
Returns: Boolean

myApp.controller('MainCtrl', function($scope, localStorageService) {
  //...
  function removeItem(key) {
   return localStorageService.remove(key);
  }
  //...
  function removeItems(key1, key2, key3) {
   return localStorageService.remove(key1, key2, key3);
  }
});

clearAll

Remove all data for this app from local storage.
If local storage is not supported, use cookies instead.
Note: Optionally takes a regular expression string and removes matching.
Returns: Boolean

myApp.controller('MainCtrl', function($scope, localStorageService) {
  //...
  function clearNumbers(key) {
   return localStorageService.clearAll(/^\d+$/);
  }
  //...
  function clearAll() {
   return localStorageService.clearAll();
  }
});

bind

Bind $scope key to localStorageService.
Usage: localStorageService.bind(scope, property, value[optional], key[optional])
key: The corresponding key used in local storage
Returns: deregistration function for this listener.

myApp.controller('MainCtrl', function($scope, localStorageService) {
  //...
  localStorageService.set('property', 'oldValue');
  $scope.unbind = localStorageService.bind($scope, 'property');

  //Test Changes
  $scope.update = function(val) {
    $scope.property = val;
    $timeout(function() {
      alert("localStorage value: " + localStorageService.get('property'));
    });
  }
  //...
});
<div ng-controller="MainCtrl">
  <p>{{property}}</p>
  <input type="text" ng-model="lsValue"/>
  <button ng-click="update(lsValue)">update</button>
  <button ng-click="unbind()">unbind</button>
</div>

deriveKey

Return the derive key
Returns String

myApp.controller('MainCtrl', function($scope, localStorageService) {
  //...
  localStorageService.set('property', 'oldValue');
  //Test Result
  console.log(localStorageService.deriveKey('property')); // ls.property
  //...
});

length

Return localStorageService.length, ignore keys that not owned.
Returns Number

myApp.controller('MainCtrl', function($scope, localStorageService) {
  //...
  var lsLength = localStorageService.length(); // e.g: 7
  //...
});

Cookie

Deal with browser's cookies directly.

cookie.isSupported

Checks if cookies are enabled in the browser.
Returns: Boolean

myApp.controller('MainCtrl', function($scope, localStorageService) {
  //...
  if(localStorageService.cookie.isSupported) {
    //...
  }
  //...
});

cookie.set

Directly adds a value to cookies.
Note: Typically used as a fallback if local storage is not supported.
Returns: Boolean

myApp.controller('MainCtrl', function($scope, localStorageService) {
  //...
  function submit(key, val) {
   return localStorageService.cookie.set(key, val);
  }
  //...
});

Cookie Expiry Pass a third argument to specify number of days to expiry

    localStorageService.cookie.set(key,val,10)

sets a cookie that expires in 10 days.

cookie.get

Directly get a value from a cookie.
Returns: value from local storage

myApp.controller('MainCtrl', function($scope, localStorageService) {
  //...
  function getItem(key) {
   return localStorageService.cookie.get(key);
  }
  //...
});

cookie.remove

Remove directly value from a cookie.
Returns: Boolean

myApp.controller('MainCtrl', function($scope, localStorageService) {
  //...
  function removeItem(key) {
   return localStorageService.cookie.remove(key);
  }
  //...
});

cookie.clearAll

Remove all data for this app from cookie.
Returns: Boolean

myApp.controller('MainCtrl', function($scope, localStorageService) {
  //...
  function clearAll() {
   return localStorageService.cookie.clearAll();
  }
});

Check out the full demo at http://gregpike.net/demos/angular-local-storage/demo.html

Development:

  • Don't forget about tests.
  • If you planning add some feature please create issue before.

Clone the project:

$ git clone https://github.com/<your-repo>/angular-local-storage.git
$ npm install
$ bower install

Run the tests:

$ grunt test

Deploy:
Run the build task, update version before(bower,package)

$ grunt dist
$ git tag 0.*.*
$ git push origin master --tags
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