TITLE CASE VANILLA JS

 <script>
function titleCase(title, minorWords) {
  if (title.length === 0) return title;
  var words = title.toLowerCase().split(" ");
  var minorWordsArray = minorWords ? minorWords.toLowerCase().split(" ") : [];
  return words
    .map(function (word, index) {
      if (minorWordsArray.indexOf(word) !== -1 && index != 0) {
        return word;
      }
      return word.charAt(0).toUpperCase() + word.slice(1);
    })
    .join(" ");
}
</script>