moment().isoWeek(Number);
moment().isoWeek(); // 数字
moment().isoWeeks(Number);
moment().isoWeeks(); // 数字
获取或设置年份的 ISO 星期。
当设置年份的星期时，将会保留星期几。
moment().isoWeek(Number);
moment().isoWeek(); // Number
moment().isoWeeks(Number);
moment().isoWeeks(); // Number
Gets or sets the ISO week of the year.
When setting the week of the year, the day of the week is retained.