var contact = new Backbone.Model(); //instantiate model instance
//set/edit data
contact.set({firstName:"John",lastname:'Doe',phone:'1-111-1111'});
//has firstName attribute, note, has returns true regardlless of attribute value
console.log(contact.has('firstName')); //logs true
//get data
console.log(contact.get('firstName')); //logs John
//unset data
contact.unset('lastname');
//verify data is unset
console.log(contact.has('lastName')); //logs false
//clear all data
contact.clear();
//verify clear
console.log(contact.attributes); //logs empty {}