Tutorial Add Non-Breaking Space on Title to Prevent Widows

$("h2").each(function() {
var wordArray = $(this).text().split(" ");
var finalTitle = "";
for (i=0;i<=wordArray.length-1;i++) {
finalTitle += wordArray[i];
if (i == (wordArray.length-2)) {
finalTitle += " ";
} else {
finalTitle += " ";
}
}
$(this).html(