var ContactModel = Backbone.Model.extend({ //extend Backbone.Model validate :function(attributes,options){ var phone = /\(?\d{3}\W?\s?\d{3}\W?\d{4}/.test(attributes.phone); var firstName = /^[A-Z]'?[a-zA-Z]+(-[a-zA-Z]+)?$/.test(attributes.firstName); var lastName = /^[A-Z]'?[a-zA-Z]+(-[a-zA-Z]+)?$/.test(attributes.lastName); if(!phone || !firstName || !lastName){ return 'Setting, Saving, Or Seeding Invalid Data' } }, initialize:function(){ //run validation, if invalid log message if(!this.isValid()){console.log(this.validationError)} } }); var contact1Model = new ContactModel({ //validate seeded data firstName:'jo234 hn',lastName:'ao321-- e',phone:'111-1111-111111' });