jQuery exists function

jquery.exists.js

jQuery.fn.exists = function(fn) {
    if(this.length>0) {
            var f = arguments[0];
        arguments[0] = function(e) {
            f(e);
        }
        fn.apply( this, arguments );
        return fn ? this.bind(name, fn) : this.trigger(name);
    } else {
        return this.length>0;
    }
}

// To use simply write the following:

$(element).exists(function() {
    $(this) // do something;
});