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 #1

    function vowels(str) {
      let count = 0;
      const checker = ['a', 'e', 'i', 'o', 'u'];
    
      for (let char of str.toLowerCase()) {
        if (checker.includes(char)) {
          count++;
        }
      }
      
      return count;
    }