brooklynDev

public class HomeController : Controller
{
    public ActionResult Index()
    {
        var person = new Person { FirstName = "John", LastName = "Doe", Age = 30 };
        ViewBag.NGon.Person = person;
        return View();
    }
}

brooklynDev

<script type="text/javascript">
    $(function () {
        $("#button").click(function () {
            alert(ngon.SomeValue);
        });
    }); </script>

brooklynDev

public class HomeController : Controller
{
    public ActionResult Index()
    {
        ViewBag.NGon.SomeValue = 100;
        return View();
    }
}

brooklynDev

        protected void Application_Start()
        {
            AreaRegistration.RegisterAllAreas();

            GlobalFilters.Filters.Add(new NGonActionFilterAttribute());

            RegisterGlobalFilters(GlobalFilters.Filters);
            RegisterRoutes(RouteTable.Routes);
        }

brooklynDev

#Controller

def HomeController < ApplicationController
   def index
      gon.myVar = 100
   end
end

#home.html.erb