fizzbuzz.js

// Here, we create our main function.
function fizzbuzz() {

    console.log('Welcome to FizzBuzz!');

    for (let i = 1; i <= 10000; i++) {
        let result = "";

        if (i % 3 === 0) result = "Fizz";
        if (i % 13 === 0) result += "Fezz";
        if (i % 5 === 0) result += "Buzz";
        if (i % 7 === 0) result += "Bang";
        if (i % 11 === 0)
            if (result === "Fezz") result += "Bong";
            else result = "Bong";
        if (i % 17 == 0) {
            if (result.length === 12) {
                result = `${result.substring(result.length, result.length-4)}${result.substring(4, 8)}${result.substring(0, 4)}`;
            } else {
                result = `${result.substring(result.length, result.length-4)}${result.substring(0, 4)}`;
            }
        }

        result == "" ? console.log(i) : console.log(result);
    }
}

// Now we run the main function...
fizzbuzz();