I made an experimental Hierarchical-MVC framework for Javascript recently:

http://www.neocoders.com/portal/projects/subo

cheers,
Lindsay

A tremendous amount of work has been done. Here are some of the highlights.

Include.

We’ve fixed the problem of having multiple files with an include library that handles including files in the same order cross browser, and compressing them easily. It can compress in the browser, or produce a files list that can be given to a standard compressor. We only have a ruby compressor right now. However, if you are interested, I can get you a php one.

Model.

We’ve tightly integrated Eric Mill’s Jester library. It queries Rest interfaces like:
Todo.find(‘all’ , callback_func );

Controller.

The controller has seen some of the greatest improvements. It uses event delegation. So simply writing:

Controller(‘todos’, {
click : function() { … }
})
Will call click on all DOM elements with class todo. You can also add css selectors to your function names like:
‘a.hide mouseover’ : function(){…}
This would call the function anytime an A tag with className hide is moused over.
Another great thing is that these events get registered automatically. You never have to reattach event handlers if you change the DOM.

View.

We’ve made views really easy with EJS. (EmbeddedJS.com). Rails like helpers, they load from files, caching, etc. They can even get compressed along with all the other files.

Compatibility.

We’ve designed JavaScriptMVC to work with other libraries and only include what it needs. For example, if you want to use only the controllers, which require ajax functionality, and you have included prototype, JavaScriptMVC will not load its own ajax functionality, and instead map Prototypes to what it needs.
Currently, we only have the Prototype masks working, but it’s designed for anything.

I’d really like to know your thoughts. I feel like this could be a natural fit with CakeBaker and separate it from rails.

http://jupiterit.com/junction.html

It’s got templates, built in history support, and automatically loads the controllers and views. It’s really good at connecting to services.