StorkJS

Simple key-value storage in your browser.

View Documentation / Download stork.js / Download stork.min.js

StorkJS allows you to store key-value pairs & records in the browser, so when your user returns that data is still there. Inspired by lawnchair, StorkJS is a more robust option with error handling, key customization, and much more!

StorkJS uses the most preferred & supported storage available based on your browser.

Features

• Clean and simple API
• Pure Javascript, no dependencies
• Graceful degradation of storage backends, uses the best one available!
• Keys & Values can be any data type
• All stored key-value pairs/records can be loaded on initialization or lazy loaded upon request
• Promises & chaining allow for cleaner code, since saving and retrieving data isn't always synchronous
• Plugins can be added to alter behavior
• Everything is cached to avoid unnessary retrievals

API

• then(callback): Start a chain of asynchronous calls
• get(key, [success], [failure]): Return a single value if it exists
• getMany(keys, [success], [failure]): Return several values at once
• save(record, [success], [failure]): Save a record, generating a key if one doesn't exist
• batch(records, [success], [failure]): Save multuple records at once
• put(key, value, [success], [failure]): Save a key-value pair
• remove(key, [success], [failure]): Removes a value/record based on their key
• removeMany(keys, [success], [failure]): Removes several values/records at once
• destroy([success], [failure]): Remove all key-values/records
• reload([success], [failure]): Load all records into cache
• each(callback, [failure]): Invokes the callback for all key-value pairs
• all([success], [failure]): Returns all keys and values to the callback
• size([success], [failure]): Returns the number of key-value pairs to the callback

Functionality added through plugins

• where(condition, [success], [failure]): Returns a subset of all key-value pairs that match some condition
• select(columns, [success], [failure]): Returns an array of specified properties
• sort(comparator, [success], [failure]): Sorts keys and values and returns the sorted value
• aggregate(property, accumulate, getResult, [success], [failure]): Performs an aggregation on a property
• count(property, [success], [failure]): Returns the number of objects with a property
• sum(property, [success], [failure]): Returns the sum of a property on object values
• avg(property, [success], [failure]): Returns the average of a property on object values
• min(property, [success], [failure]): Returns the minimum value of a property on object values
• max(property, [success], [failure]): Returns the maximum value of a property on object values

Examples

Using StorkJS as a record store

var db = new Stork( {name: 'todos'} );
// Save one record
db.save( {id: 1, title: 'Download Stork JS'} );
// Save multiple at once
db.batch([
  {id: 2, title: 'Use Stork JS'},
  {id: 3, title: '???'},
  {id: 4, title: 'Profit!'}
]);
// Save one without an ID, an ID is placed in the record automatically
db.save( {title: 'Hit the Gym'} );
// Remove one
db.remove( 4 );
// Retrieve a record
db.get( 3, function(todo) 
{
  alert( todo.title );
});
// Retrieve all records
db.all(function(todos) 
{
  // todos = array of all todo records
});

Using StorkJS as a key-value store

var db = new Stork( {name: 'settings'} );
db.put( 'meow', 'string key' );
db.put( 23, 'number key' );
db.put( true, 'boolean key' );
db.put( {y:5}, 'object key' );
db.put( [1,3], 'array key' );
// Remove one
db.remove( [1,3] );
// Retrieve one key-value pair
db.get( {y:5}, function(value, key)
{
  // value == 'object key'
});
// Retrieve all key-value pairs
db.all(function(values, keys)
{
  // values = array of all values, keys = array of corresponding keys
});

Listening for success or failure

// All saving, removal, & retrieval operations can be passed success & failure callbacks
db.get( 23543,
  function(value, key) {

  },
  function(key, error) {

  })
;

// All saving, removal, & retrieval operations return promises
db.get( 23543 )
  .then(function(value, key) {

  })
  .error(function(error) {

  })
;

// If a result of a callback is a promise, YOU CAN CHAIN THEM!
db.get( 23543 )
  .then(function(value, key) {
    // The value associated to the key
    return this.size();
  })
  .then(function(size) {
    // The current number of key-value pairs.
    return this.all();
  })
  .then(function(values, keys) {
    // All key-value pairs currently stored.
    return this.destroy();
  })
  .then(function() {
    // Everything is destroyed!
  })
  .error(function(error) {
    // Oops!
  })
;

Building

npm install
gulp

Building Documentation

gulp docs

Testing

Once built, view test/index.html in the browser.

TODO

• [ ] Test chrome-storage-local adapter
• [ ] Test ie-userdata adapter
• [ ] Add Blackberry Persistent storage
• [ ] Add HTML5 Filesystem storage
• [X] Add IE Userdata storage
• [X] Add IndexedDB storage
• [ ] Add CouchDB storage