backbone.nopersistence is a simple adapter to disable persistence for Backbone apps.
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README.md

Backbone.nopersistence

backbone.nopersistence is a simple adapter to disable persistence for Backbone apps.

It's a simple replacement for Backbone.Sync(...). You can call all standard Backbone methods available but all collections will be saved in memory only. This is useful for testing or when your app does not need persistence between sessions. It's also useful if you want to test your application using Rhino and you can't use localStorage.

Usage

Include Backbone.noPersistence after having included Backbone.js:

<script type="text/javascript" src=underscore.js"></script>
<script type="text/javascript" src="backbone.js"></script>
<script type="text/javascript" src="backbone.noPersistence.js"></script>

Create your collections with a new bnp.NoPersistence assigned to noPersistence:

window.SomeCollection = Backbone.Collection.extend({
  noPersistence: new bnp.NoPersistence(),
  
  // Standard Backbone.js code
});

You can also set a maxSize property in each bnp.NoPersistence instance. When this property is set and a new model is inserted in a collection, backbone.persisistence will throw an exception if the new size of the collection is greater than maxSize.

Alternatively, you can let backbone.nopersistence handle the instantiation of these objects for you. Just import the .js files and use your models normally.

Credits

Thanks to Jerome Gravel-Niquet for creating backbone.localStorage.