indexOf

extendBackbone.View.extend(properties, [classProperties]) Get started with views by creating a custom view class. You'll want to

lastIndexOf

previousAttributesmodel.previousAttributes() Return a copy of the model's previous attributes. Useful for getting a diff between

urlRootmodel.urlRoot or model.urlRoot() Specify a urlRoot if you're using a model outside of a collection, to

constructor / initializenew Backbone.Collection([models], [options]) When creating a Collection, you may choose to pass in the initial

previousmodel.previous(attribute) During a "change" event, this method can be used to get the previous value of a changed

extendBackbone.Model.extend(properties, [classProperties]) To create a Model class of your own, you extend Backbone.Model

isValidmodel.isValid() Run validate to check the model

cidmodel.cid A special property of models, the cid or client id is a unique identifier automatically assigned to all models