获取当月天数

  1. getTotalDay(year, month) {
  2.   const list = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
  3.   if ((!(year % 4) && (year % 100) || !(year % 400))) {
  4.     // 闰年
  5.     list[1] = 29;
  6.   }
  7.   return list[month];
  8. }
  10. const time = new Date();
  11. const days = new Date(time.getFullYear(), time.getMonth(),0);

获取工作日

  1. getNoWeekendDateList(length, haveToday = true) {
  2.   const time = new Date(2021, 2, 28);
  3.   const currentYear = time.getFullYear();
  4.   const currentMonth = time.getMonth() + 1;
  5.   const currentDate = time.getDate();
  6.   const currentTotalDay = this.getTotalDay(currentYear, currentMonth);
  7.   const dayList = () => {
  8.     let tempList;
  9.     if (haveToday) {
  10.       tempList = [...Array(currentTotalDay - currentDate + 1)].map((e, i) => i + currentDate);
  11.     } else {
  12.       tempList = [...Array(currentTotalDay - currentDate)].map((e, i) => i + currentDate + 1);
  13.     }
  14.     const gap = length + 2 - tempList.length
  15.     if (gap > 0) {
  16.       tempList.push(...[...Array(gap)].map((e, i) => i + 1).filter(i => ![0, 6].includes(new Date(currentYear, currentMonth, i).getDay()),
  17.                                                                   ));
  18.       console.log('gap', gap);
  19.     }
  20.     console.log('tempList', tempList);
  21.     return tempList;
  22.   };
  23.   return dayList().filter(i => ![0, 6].includes(new Date(currentYear, currentMonth - 1, i).getDay())).slice(0, 6);
  24. },
  26.   getTotalDay(year, month) {
  27.     const list = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
  28.     if ((!(year % 4) && (year % 100) || !(year % 400))) {
  29.       // 闰年
  30.       list[2] = 29;
  31.     }
  32.     return list[month];
  33.   },

获取下一天

  1. tempToday = new Date();
  2. tempDate = new Date(tempToday.setDate(tempToday.getDate() + i));