How to find vowels in given sting?

I have requirement like if the given string contains vowels it should print the founded vowels , if it does not contain vowels it should print message like no vowels found.

function findVowels(str) {

    const vowels = ['a', 'e', 'i', 'o', 'u'];

    const foundVowels = str.contains(vowels);

    if (foundVowels.length > 0) {
        console.log('Found vowels:', foundVowels.join(', '));
    } else {
        console.log('No vowels found.');
    }
}

const inputString = "Hello, World!";
findVowels(inputString);