我如何调整此功能以使用夏令时?

How can I adjust this function to work with daylight savings?

我用这个例子在 angular 中创建了一个日历。但我今天意识到,当 DST 结束时,日期会重复,然后从那时起日子就会减去一天。

看看 stackblitz。 11 月 7 日重复。 stackblitz link to calendar

这是生成日历日的代码。我该如何调整才能使 DST 不会搞砸一切?

  private getCalendarDays(date = new Date) {
var startDate;

startDate = this.getCalendarStartDay(date).getTime();


 const calendarStartTime =  startDate;
    return this.range(0, 41)
      .map(num => new Date(calendarStartTime + DAY_MS * num));
  }

  private getCalendarStartDay(date = new Date) {
    const [year, month] = [date.getFullYear(), date.getMonth()];
    const firstDayOfMonth = new Date(year, month, 1).getTime();

    return this.range(1,7)
      .map(num => new Date(firstDayOfMonth - DAY_MS * num))
      .find(dt => dt.getDay() === 0)
  }

  private range(start, end, length = end - start + 1) {
    return Array.from({ length }, (_, i) => start + i)
  }

我不太确定,但我想你可以在 12 a.m 得到日期。避免问题

  private getCalendarStartDay(date = new Date) {
    const [year, month] = [date.getFullYear(), date.getMonth()];

    //see that I indicate the 1 of the month at 12:00:00
    const firstDayOfMonth = new Date(year, month,1,12,0,0,0).getTime();

    //well the range from 0 to 6
    return this.range(0,6)
      .map(num => new Date(firstDayOfMonth - DAY_MS * num))
      .find(dt => dt.getDay() === 0)
  }

注意:我在 10 月收到你的错误,而不是在 11 月