Answers for "fibonacci sequence:"

fibonacci sequence

function _fib(number) {
    if (number === 0 || number === 1) {
        return number;
    } else {
        return _fib(number - 1) + _fib(number - 2)
    }
}

Fibonacci sequence

function myFib(n) {
    if (isNaN(n) || Math.floor(n) !== n)
        return "Not an integer value!";
    if (n === 0 || n === 1)
        return 3;
    else
        return myFib(n - 1) + myFib(n - 2);
}

console.log(myFib(5));