js获取昨天/上周/上个月开始和结束的时间戳，可以设置时分秒 js obtain start and end timestamp of yesterday/last week/last month, with set of hour/minute/second

//obtain timestamp of last week

var now=new Date()

var nowDayOfWeek = now.getDay(); //今天本周的第几天

var nowDay = now.getDate(); //当前日

var nowMonth = now.getMonth(); //当前月

var nowYear = now.getFullYear(); //当前年

//obtain time of last month

var lastMonthDate = new Date(); //上月日期

lastMonthDate.setDate(1);

lastMonthDate.setMonth(lastMonthDate.getMonth() - 1);

var lastMonth = lastMonthDate.getMonth();

//obtain timestamp of yesterday

var dateForYestd=new Date()

var yestdTime = Math.floor(dateForYestd.getTime()/1000)-86400

var yestd_time = new Date(yestdTime*1000)

yestd_time.setHours(0,0,0)

var yestd_start = yestd_time.getTime()/1000 //yesterday start

yestd_time.setHours(23,59,59)

var yestd_end = yestd_time.getTime()/1000 //yesterday end

console.log(yestd_start, yestd_end)

//格式化日期：yyyy-MM-dd

function formatDate(date) {

var myyear = date.getFullYear();

var mymonth = date.getMonth() + 1;

var myweekday = date.getDate();

var myHour = date.getHours();

var myMinute = date.getMinutes();

var mySecond = date.getSeconds();

if (mymonth < 10) {

mymonth = "0" + mymonth;

}

if (myweekday < 10) {

myweekday = "0" + myweekday;

}

if (myHour < 10) {

myHour = "0" + myHour;

}

if (myMinute < 10) {

myMinute = "0" + myMinute;

}

if (mySecond < 10) {

mySecond = "0" + mySecond;

}

return (myyear+"-"+mymonth+"-"+myweekday+" "+myHour+":"+myMinute+":"+mySecond)

}

//获得某月的天数

function getMonthDays(myMonth) {

var monthStartDate = new Date(nowYear, myMonth, 1);

var monthEndDate = new Date(nowYear, myMonth + 1, 1);

var days = (monthEndDate - monthStartDate) / (1000 * 60 * 60 * 24);

return days;

}

//获得上周的开始日期

function getLastWeekStartDate(hour,minute,second) {

var weekStartDate = new Date(nowYear, nowMonth, nowDay - nowDayOfWeek - 6,hour,minute,second)

return formatDate(weekStartDate)

}

//获得上周的结束日期

function getLastWeekEndDate(hour,minute,second) {

var weekEndDate = new Date(nowYear, nowMonth, nowDay - nowDayOfWeek,hour,minute,second)

return formatDate(weekEndDate);

}

//获得上月开始时间

function getLastMonthStartDate(hour,minute,second) {

if (lastMonth == 11) {

nowYear = nowYear - 1

}

var lastMonthStartDate = new Date(nowYear, lastMonth, 1, hour,minute,second);

return formatDate(lastMonthStartDate);

}

//获得上月结束时间

function getLastMonthEndDate(hour,minute,second) {

var lastMonthEndDate = new Date(nowYear, lastMonth, getMonthDays(lastMonth), hour,minute,second);

return formatDate(lastMonthEndDate);

}

//time to timestamp

var weekStart = new Date(getLastWeekStartDate('00','00','00'))

var weekEnd = new Date(getLastWeekEndDate('23','59','59'))

var monthStart = new Date(getLastMonthStartDate('00','00','00'))

var monthEnd = new Date(getLastMonthEndDate('23','59','59'))

 

//change starttime and endtime

var start_time = Math.floor(weekStart.getTime()/1000)

var end_time = Math.floor(weekEnd.getTime()/1000)

 var month_start = Math.floor(monthStart.getTime()/1000)

var month_end = Math.floor(monthEnd.getTime()/1000)

console.log(start_time, end_time, month_start, month_end )