changedAttributesmodel.changedAttributes([attributes]) Retrieve a hash of only the model's attributes that have changed since the

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

pairs

urlmodel.url() Returns the relative URL where the model's resource would be located on the server. If your models are located somewhere

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

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

hasChangedmodel.hasChanged([attribute]) Has the model changed since its last

clonemodel.clone() Returns a new instance of the model with identical attributes.

escapemodel.escape(attribute) Similar to get, but returns

clearmodel.clear([options]) Removes all attributes from the model, including the id attribute. Fires a "change"