count vowel of string

console.log("Hello World!");function qwe(ste) {
    let count = 0;
    let vowel = ["a", "i", "u", "e", "o"]
    
    for (let werr of ste) {
        if (vowel.includes(werr)) {
            count++;
       }
    }
    return count
}

console.log(qwe("nana brut"))