Overriding of jQuery's .on() for specific event delegation; so that it can be called with ':only' at the end of the selector and the event will only be attached to that exact element (well, selector) only, i.e. excluding its descendants (well, technically it will be but the descendants will ignore the event and also prevent it from bubbling up i…

delegateOnlyTo.jquery.js

(function($){

    var _oldOn = $.fn.on;

    $.fn.on = function( types, selector, data, fn, one ){
        
        var selectorSegments = selector.match(/^(.+?)(:only)?$/);
        
        if ( selectorSegments[2] ) {
            
            _oldOn.call(this, types, selectorSegments[1] + ' *', data, function(e){
                e.stopPropagation();
            }, one);
            
            arguments[1] = selectorSegments[1];
        }    
        
        return _oldOn.apply(this, arguments);
    };
})(jQuery);

// Proof:
$('body').on('click', 'p:only', function(){alert('works with .on()!');})
    .one('click', 'p:only', function(){alert("works with .one()! Click again to see this won't be shown again");})
    .delegate('p:only', 'click', function(){alert("works with .delegate()!");})

//Oh, and this *won't* do anything now :D
    .find('p *').trigger('click');