How to get weekending date(last friday) for each month in type script.

Call the method as below whenever you need it for current month based on current date.

console.log(this.getMonthLastWeekendDate());


//methods for it..

getMonthLastWeekendDate(): Date {
    const date = new Date();
    const y = date.getFullYear();
    const m = date.getMonth();
    const lastDay = new Date(y, m + 1, 0);
    const weekendingDate = this.getLastWeekDay(lastDay);
    return weekendingDate;
  }

  getNextDayOfWeek(date: Date, dayOfWeek: number): Date {
      const resultDate = new Date(date.getTime());
      resultDate.setDate(date.getDate() + (7 + dayOfWeek - date.getDay()) % 7);
      return resultDate;
  }

  getLastWeekDay(lastDay: Date): Date {
    let weekendingDateTemp;
      const dayOfWeek = lastDay.getDay();
      switch (dayOfWeek) {
        case 5:
          weekendingDateTemp = lastDay;
          break;
        case 6:
          weekendingDateTemp = this.getDateBeforeDays(lastDay, 1);
          break;
        case 0:
        weekendingDateTemp = this.getDateBeforeDays(lastDay, 2);
          break;
        default:
          weekendingDateTemp = this.getNextDayOfWeek(lastDay, 5);
        }
    return weekendingDateTemp;
  }

  getDateBeforeDays(inputDate: Date, numberOfDays: number): Date {
    const finaltempDate = new Date(inputDate.setDate(inputDate.getDate() - numberOfDays ));
    return finaltempDate;
  }