SOURCE

function isDuringDate () {
        var curDate = new Date() //当前时间
			if (curDate >= new Date('2021-5-18 00:00') && curDate <= new Date('2022-5-18 08:30'))return true
			if (curDate >= new Date('2021-5-18 10:00') && curDate <= new Date('2021-5-18 16:30'))return true
			if (curDate >= new Date('2021-5-18 20:00') && curDate <= new Date('2021-5-18 23:30'))return true
}
console.log(isDuringDate())
        var a = new Date() //当前时间

console.log(a.getDate(0))

function getWeekTime() {
    const one_day = 86400000;// 24 * 60 * 60 * 1000;
    const date = new Date();
    const day = date.getDay();// 返回0-6,0表示周日
    // 设置时间为当天的0点
    date.setHours(0);
    date.setMinutes(0);
    date.setSeconds(0);
    date.setMilliseconds(0);
    const week_start_time = new Date(date.getTime() - (day - 2) * one_day);
    const week_end_time = new Date(date.getTime() + (7 - day) * one_day);
    return {
        week_start_time,
        week_end_time
    }
}
console.log(getWeekTime())