const that = this;
const inputMonth = String(that.query.practicalEndTime);
const [year, month] = inputMonth.split('-');
const currentDate = new Date(year, parseInt(month) - 1, 1);
const firstDayOfMonth = new Date(currentDate.getFullYear(), currentDate.getMonth(), 1);
const lastDayOfMonth = new Date(currentDate.getFullYear(), currentDate.getMonth() + 1, 1);
lastDayOfMonth.setDate(lastDayOfMonth.getDate() - 1);
const formattedFirstDay = `${firstDayOfMonth.getFullYear()}.${(firstDayOfMonth.getMonth() + 1).toString().padStart(2, '0')}.${firstDayOfMonth.getDate().toString().padStart(2, '0')}`;
const formattedLastDay = `${lastDayOfMonth.getFullYear()}.${(lastDayOfMonth.getMonth() + 1).toString().padStart(2, '0')}.${lastDayOfMonth.getDate().toString().padStart(2, '0')}`;
console.log("月初日期:", formattedFirstDay);
console.log("月末日期:", formattedLastDay);