Marionette JS is based on Backbone JS and a lot of the module extend from basic backbone modules. Here i learn when i extend a module whether it was a view or model or anything you will do like this :
var BaseForm = Marionette.ItemView.extend({
initialize: function(){
this.title = "title"
},
});
and to use it on a custom page view base on the BaseForm you will do this :
var contactForm = BaseForm.extend({
initialize: function(){
this.rows = 2;
...
