Javascript -按两个日期属性对对象数组进行排序

function compareDates(a, b) {
  var dateA = new Date(a.date1);
  var dateB = new Date(b.date1);
  var dateC = new Date(a.date2);
  var dateD = new Date(b.date2);

  if (dateA < dateB) {
    return -1;
  } else if (dateA > dateB) {
    return 1;
  } else {
    if (dateC < dateD) {
      return -1;
    } else if (dateC > dateD) {
      return 1;
    } else {
      return 0;
    }
  }
}

var array = [
  { date1: '2022-01-01', date2: '2022-02-01' },
  { date1: '2022-02-01', date2: '2022-01-01' },
  { date1: '2022-01-01', date2: '2022-01-01' }
];

array.sort(compareDates);
console.log(array);