code: function(e) {
  
  			if ( e.keyCode !== ENTER_KEY ){
  				return;
  			}
  
  			if ( !this.input.val().trim() ){
  				return;
  			}
  
  			window.app.Todos.create(this.newAttributes());
  			this.input.val('');
  		}
docs: If you hit return in the main input field, create new **Todo** model, persisting it to *localStorage*.