Identify unlabelled inputs on the page (wcag2) (uses dojo)

gistfile1.txt

(function(){
	// usage: 
	// dojo.create("script", { src: 'https://raw.github.com/gist/1267150/b786273d696a119bba26c4590b1608aa9a21755f/gistfile1.txt?'+(new Date).getTime(), type: 'text/javascript' }, dojo.query("head", document.documentElement).shift())
	var labelMap = {}; 
	dojo.query("label[for]").forEach(function(lbl) {
		labelMap[lbl.htmlFor]=lbl; 
	});
        console.log("labelMap: ", labelMap);
	var selector = [
		"input[type=text]",
		"input[type=password]",
		"input[type=checkbox]",
		"input[type=radio]",
		"input[type=file]",
		"select",
		"textarea"
	].join(',');
	var badInputs = dojo.query(selector).filter(function(elm) {
                console.log("id: %s, title: %s", elm.id, elm.title, elm);
		if(elm.title) return false; 
		var id = elm.id; 
                console.log("labelled-by: ", labelMap[id]);
		return !(id && labelMap[id]==elm); 
	});
	console.log("unlabelled inputs:", badInputs);
})();