在日期数组中搜索最低/最高值

function searchMinMaxDate(dates, isMin) {
  if (dates.length === 0) {
    return null;
  }

  let minMaxDate = dates[0];

  for (let i = 1; i < dates.length; i++) {
    if ((isMin && dates[i] < minMaxDate) || (!isMin && dates[i] > minMaxDate)) {
      minMaxDate = dates[i];
    }
  }

  return minMaxDate;
}

const dates = [new Date('2022-01-01'), new Date('2022-02-01'), new Date('2022-03-01')];
const minDate = searchMinMaxDate(dates, true);
const maxDate = searchMinMaxDate(dates, false);

console.log('最早日期:', minDate);
console.log('最晚日期:', maxDate);