Capitalize string eg: (Title, Name, etc) and remove unnecessary spaces between the words

capitalizeString.js

function capitalizeString(str = "") {
  // Break name into word's chunk.
  let words = str.split(' ');
  // Removed empty string, null, undefined, etc.
  let filteredWords = words.filter(word => word);
  // Capatilize words.
  let capatilizeWords = filteredWords.map(word => `${word[0].toUpperCase()}${word.slice(1)}`);
  // Concatenate words.
  return capatilizeWords.join(' ');
}

// Example
capitalizeString("test user") // "Test User"
capitalizeString("umair, ahmed khanzada") // "Umair, Ahmed Khanzada"
capitalizeString("super admin") // "Super Admin"
capitalizeString("blah blah blah") // "Blah Blah Blah"