extendBackbone.Router.extend(properties, [classProperties]) Get started by creating a custom router class. Define actions that are

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

isValidmodel.isValid() Run validate to check the model

getcollection.get(id) Get a model from a collection, specified by an

"reset" (collection, options) â when the collection's entire contents have been reset

indexOf

lastIndexOf

isNewmodel.isNew() Has this model been saved to the server yet? If the model does not yet have an id, it is considered

reduceRight (foldr)

modelcollection.model([attrs], [options]) Override this property to specify the model class that the collection contains. If defined