I'm not sure about this but I think you can use your own manager in order to keep spaghetti code to a minimum.
Demo: http://jsfiddle.net/8C5wR/
function ClickManager(element) {
this.el = $(element);
this.check = function(){
if (this.el.hasClass('class1')) {
console.log('class 1 detected');
}
if (this.el.hasClass('class2')) {
console.log('class 2 detected');
}
if (this.el.hasClass('class3')){
console.log('class 3 detected');
}
};
}
(function(){
$('.class1, .class2, .class3').on('click', function(){
manager = new ClickManager($(this));
manager.check();
});
})();
Maybe others can weigh in to point out possible fallouts of this.