simple keyword message selectors for javascript

As I have been messing with alternative object systems for php one of the ones I came up with was ab(using) the __invoke magic method to take a keyword argument list and find a given selector based upon it. I realized this could be done in an even more trivial manner in javascript using the object syntax and returning a new object w/ the dispatch mechanism rather than "return this".

var Klasses = {
    'Person': {
        'selectorPart1:selectorPart2': function(a, b) {
            console.log('called with ' + a + ' and ' + b);
            return obj(this);
        },
        'subSelector': function(a) {
            console.log('subselector with:' + a + ' for ' + this.name);
            return obj(this);
        },
        'get': function(field) {
             console.log(this.name + ' over-ride of get with ' + field);   
        }
    },
    '*': {
        'get': function(field) {
            if(this[field]) {
                return this[field]
            } else {
                throw new Exception('No field ' + field);
            }
        }
    }
};

var obj = function(self) {
    return function(selector) {
        var sel = [];
        var args = [];
        $.each(selector, function(k, v) {
           sel.push(k);
           args.push(v);
        });
    
        var selectorName = sel.join(':');
        var message = false;
        if(Klasses[self.klass][selectorName]) {
            message = Klasses[self.klass][selectorName];
        }
        else if(Klasses['*'][selectorName]) {
            message = Klasses['*'][selectorName];
        }            
        
        if(message) {
            return message.apply(self, args);
        }
    };
}
    
var guy = obj({klass: 'Person', name: 'peter'});
guy({selectorPart1: 'apple', selectorPart2: 'candy'})
   ({subSelector: 'rotten'})

var otherGuy = obj({klass: 'Person', name: 'samuel'})({subSelector: 'cotton'})
console.log(otherGuy({get: 'name'}))

To see it live: jsfiddle running the above