Recursive Generator Function in JavaScript

recursive_generator_function.js

// Works in Chrome devtools console
function* downToZero (n) { 
    yield n;  // yield "first" element of the "list"

    if (n > 0)  // yield each element of the "rest" of the "list"
        for (var n2 of downToZero(n - 1)) 
            yield n2; 
}

var tenToZero = downToZero(10);

console.log('The first number should be 10:', tenToZero.next().value);
console.log('The second number should be 9:', tenToZero.next().value);
console.log('The third number should be 8:', tenToZero.next().value);

console.log('The for-loop below should take off from 7')

for (var number of tenToZero) 
    console.log(number);