changedmodel.changed The changed property is the internal hash containing all the attributes that have changed since its last

shuffle

lengthcollection.length Like an array, a Collection maintains a length property, counting the number of models it contains

defaultsmodel.defaults or model.defaults() The defaults hash (or function) can be used to specify the default attributes for

pairs

hasmodel.has(attribute) Returns true if the attribute is set to a non-null or non-undefined value.

findLastIndex

routerouter.route(route, name, [callback]) Manually create a route for the router, The route argument may be a

"all" â this special event fires for any triggered event, passing the event name as the first argument followed by all trigger arguments.

resetcollection.reset([models], [options]) Adding and removing models one at a time is all well and good, but sometimes you have