Backbone app

by InviS

HTML

<script src="https://raw.github.com/documentcloud/underscore/9fcaac97b6d4d5e243c5fc9eab27979f8f5fbf59/underscore-min.js"></script>
<script src="http://documentcloud.github.com/backbone/backbone-min.js"></script>

JavaScript

var Person = Backbone.Model.extend({
    defaults: {
        firstname: 'Valeriy',
        lastname: 'Vasin'
    }
});

var I = new Person({firstname: 'Valeriy', lastname: 'Vasin'});
I.bind('change:firstname', function(model, firstname){
    console.log("Name "+I.previous('firstname')+' was changed by ' + firstname);
});
I.set({firstname: 'Alex'});