Discussion on: Daily Challenge #3 - Vowel Counter

/**
 * Count the number of vowels in the input and return an integer.
 */
function countVowels (inputText) {
  // Create a regular expression that matches vowels. Look for all matches (g flag) and ignore case (i flag).
  const vowelRegularExpression = /[aeiou]/gi

  // Convert the input text to lower case and find the matches.
  const vowelMatches = inputText.match(vowelRegularExpression)

  // If there are matches, return the length of the match array. Otherwise, there were no matches, so return 0.
  return (vowelMatches ? vowelMatches.length : 0)
}