FFS stands for the Filter / Find Solution. You know how you get stumped when your jQuery find is returning nothing, and yet you know you've got a match, like, right there? Or vice versa? Perform first filter, then find, on each member of the collection. Wrote because of repeatedly stubbing my toes on jQuery Ajax responses.

jquery.fss.js

$.fn.FFS = function FilterFindSolution(){
	var a = ['filter','find'];
	var p = [].slice.call(arguments);
	var y = $();

	this.each(function(){
		var e = $(this);
		var i = -1;

		while(i++ < 1) y = y.add(e[a[i]].apply(e, p));
	});

	return y;
}