Planet.prototype = jQuery([]);

This is exactly what you wanted to achieve here. I have used it before, and it makes it really easy to create a stateful ui components. So the tool tip example could have been easily made using the widget factory class.

That’s exactly how I see it too. I guess it can be helpful for little apps/widgets which do not need the whole Backbone logic and weight (not to mention _.js).

I’ve been digging deep into Backbone.js these days. And its philosophy seems to be User Interaction -> DOM event listener -> Data modification callbacks -> More other data modification callbacks if needed -> interface updates signals -> populate javascript template like ERB -> update interface.

I think this is the ultimate separation. I know it’s know like the more separation the merrier. But I have something really against doing anything like append(‘…’).

All said, very interesting plugin, I guess this will be more middle ground between jQuery spaghetti and Backbone/knockout/javascriptmvc.

function Foo() {
    this.name = 'foo';
    this.setDOM('');
}
 
$.extend( Foo.prototype, new jQuery.Interface, { // more prototype methods } );

So Foo preserves .constructor