← ⚡ JavaScript World

⚡ Vowel Hunter

★★☆☆☆ · worth 100 points

You can practise without a player, but pick a player to score points!

📖 The mission

Today you unlock

Loops inspect each item

Many levels use a loop: start with a simple value, visit each item, update the answer, then return it at the end.

💡 Hint ladder

Make the text lowercase first: text.toLowerCase()
Check each letter with "aeiou".includes(letter).

🧪 Coach checks

◯ Banana has 3
◯ no vowels
◯ ALL CAPS counts too
◯ empty text is 0
◯ mixed sentence

Live coach

Getting ready

☆☆☆

💬 You can walk through a word letter by letter and check each one.

function countLetterA(text) {
  let count = 0;
  for (const letter of text.toLowerCase()) {
    if (letter === "a") {
      count = count + 1;
    }
  }
  return count;
}

console.log(countLetterA("Banana"));  // 3

📟 It printed:

📟 Output