Array rotation JS

function arrayRotation(array, numberOfRotations) {

let newStartingArray = [];
let leftoutArray = [];

while (numberOfRotations> Number(array.length)) {
numberOfRotations -= Number(array.length);
}

for (let index = 0; index < Number(array.length); index++) {

if (index !== numberOfRotations) {
leftoutArray.push(array[index]);

} else if (index === numberOfRotations) {
newStartingArray.push(array[index]);

while (index < Number(array.length)) {
index++;
newStartingArray.push(array[index]);
}
}
}

newStartingArray = newStartingArray.join(" ");
leftoutArray = leftoutArray.join(" ");
console.log(newStartingArray + leftoutArray);
}