Vowels Sum

function vowelsSum(input) {
    let text = input[0];
    let totalSum = 0;
    for (let index = 0; index < text.length; index++) {
        let letter = text[index];
        if (letter === "a") {
            totalSum += 1;
        } else if (letter === "e"){
            totalSum += 2;
        } else if (letter === "i"){
            totalSum += 3;
        } else if (letter === "o"){
            totalSum += 4;
        } else if (letter === "u"){
            totalSum += 5;
        }
    }
    console.log(totalSum);
}