Converts a String to Titlecase.

toTitleCase.js

function toTitleCase(string) {
  if (!string) {
    return 'no string was found';
  }
  let newString = string;
  const lowers = ['A', 'An', 'The', 'And', 'But', 'Or', 'For', 'Nor', 'As', 'At', 'By', 'For', 'From', 'In', 'Into', 'Near', 'Of', 'On', 'Onto', 'To', 'With'];
  const uppers = ['TV'];
  newString = newString.replace(/([^\W_]+[^\s-]*) */g, (txt) => {
    return `${txt.charAt(0).toUpperCase()}${txt.substr(1).toLowerCase()}`;
  });

  lowers.forEach((lower) => {
    newString = newString.replace(new RegExp(`\\s${lower}\\s`, 'g'), (txt) => {
      return txt.toLowerCase();
    });
  });
  uppers.forEach((upper) => {
    newString = newString.replace(new RegExp(`\\b${upper}\\b`, 'g'), upper.toUpperCase());
  });
  return newString;
}