js获取日期年初及年末

		const that = this;
 		// const inputMonth = "2024.04";
        // console.log(that.query.practicalEndTime)
        const inputMonth = String(that.query.practicalEndTime);

        // 将月份字符串拆分为年份和月份 因为 that.query.practicalEndTime为2024-04
        const [year, month] = inputMonth.split('-');
        // 创建表示给定年份和月份的Date对象
        const currentDate = new Date(year, parseInt(month) - 1, 1);
        // 获取当前月份的第一天
        const firstDayOfMonth = new Date(currentDate.getFullYear(), currentDate.getMonth(), 1);
        // 获取当前月份的下一个月的第一天，再减去一天，即为当前月份的最后一天
        const lastDayOfMonth = new Date(currentDate.getFullYear(), currentDate.getMonth() + 1, 1);
        lastDayOfMonth.setDate(lastDayOfMonth.getDate() - 1);
        // 格式化月初和月末日期
        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);