trying to get this javascript function to work. it just takes two numbers and finds the greatest divisor and returns that number to consolelog

function greatestDivisor(n1, n2) {

if (n2 === 0) return n1;

return greatestDivisor(n2, n1 % n2);

}

console.log("greatestDivisor([50,80])==>" + greatestDivisor([50, 80]));