/**
 * 获取某年中有几周
 * @param {*} year
 * @returns
 */
export function getYearWeeks(year: any = new Date().getFullYear()) {
  let first = new Date(year, 0, 1).getDay();
  if (first == 1) {
    first = 0;
  } else if (first == 0) {
    first = 1;
  } else {
    first = 8 - first;
  }
  if (
    (year % 4 == 0 && year % 100 != 0) ||
    (year % 100 == 0 && year % 400 == 0)
  ) {
    var allyears = 366;
  } else {
    var allyears = 365;
  }
  let week = Math.ceil((allyears - first) / 7) + (first !== 0 ? 1 : 0);
  return week;
}