获取本月、上月第一天和最后一天的日期 //本月第一天和最后一天日期 getCurDay(){ let nowdays = new Date(); let year = nowdays.getFullYear(); let month = nowdays.getMonth() + 1; month = month > 9 ? month : "0" + month; let firstDayOfCurMonth = `${year}-${month}-01`; let last