JS Array selection sort

function sort(array) {
  for (let j = 0; j < array.length; j++) {
    var smallest = j;
    for (let i = j + 1; i < array.length; i++) {
      if (array[smallest] <= array[i]) {
        smallest = i;
      }
    }
    array.unshift(array.splice(smallest, 1)[0]);
  }

  return array;
}

array = [9, 9, 1, 5, -7, -3, 2, 2, 0, 0];
console.log(sort(array));