Question

Writing if/else statements in the middle of jQuery code doesn’t feel right:

if ($("#test").length) {
  // do smth
}
else {
  // do smth else
}

Is there something similar to:

$("#test").test(function(){
  // do smth
}, 
function(){
  // do smth else
});

Answer 1

Is there something similar to:

There is, now!

(function($) {
    $.fn.test = function(a, b) {
        (this.length ? a : b).apply(this);
        return this;
    };
})(jQuery);

Working demo at http://jsfiddle.net/alnitak/n2CLZ/