count vowels in javascript
const vowels = ['a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U']; function countVowels(sentence) { let counts = 0; for(let i = 0; i < vowels.length; i++) { if(vowels.includes(sentence[i])) { counts++; } } return console.log(counts); } countVowels('Hello World'); countVowels('AaEeIiOoUu'); countVowels('aaaaa');