Vowels

Directions

Write a function that returns the number of vowels used in a string. Vowels are the characters 'a', 'e' 'i', 'o', and 'u'.

Examples:

vowels('Hi There!') --> 3

vowels('Why do you ask?') --> 4

vowels('Why?') --> 0

Solutions

• Solution #2

    function vowels(str) {
      const matches = str.match(/[aeiou]/gi); // returns an array of matches or null
      
      return matches ? matches.length : 0;
    }