获取本月 上周 上周 上月日期等各种时间操作

/* 获取本周、本季度、本月、上月的开端日期、停止日期*/

var now = new Date(); //当前日期

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.getYear(); //当前年

nowYear += (nowYear < 2000) ? 1900 : 0; //

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

lastMonthDate.setDate(1);

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

var lastYear = lastMonthDate.getYear();

var lastMonth = lastMonthDate.getMonth();

//格局化日期：yyyy-MM-dd

function formatDate(date) {

var myyear = date.getFullYear();

var mymonth = date.getMonth()+1;

var myweekday = date.getDate();

if(mymonth < 10){

mymonth = "0" + mymonth;

}

if(myweekday < 10){

myweekday = "0" + myweekday;

}

return (myyear+"/"+mymonth + "/" + myweekday);

}

//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;

}

//获得本季度的开端月份

function getQuarterStartMonth(){

var quarterStartMonth = 0;

if(nowMonth<3){

quarterStartMonth = 0;

}

if(2<nowMonth && nowMonth<6){

quarterStartMonth = 3;

}

if(5<nowMonth && nowMonth<9){

quarterStartMonth = 6;

}

if(nowMonth>8){

quarterStartMonth = 9;

}

return quarterStartMonth;

}

//获得本周的开端日期

function getWeekStartDate() {

var weekStartDate = new Date(nowYear, nowMonth, nowDay - nowDayOfWeek);

return formatDate(weekStartDate);

}

//获得本周的停止日期

function getWeekEndDate() {

var weekEndDate = new Date(nowYear, nowMonth, nowDay + (6 - nowDayOfWeek));

console.log("本周开始:"+weekEndDate)

return formatDate(weekEndDate);

}

//获得本月的开端日期

function getMonthStartDate(){

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

return formatDate(monthStartDate);

}

//获得本月的停止日期

function getMonthEndDate(){

var monthEndDate = new Date(nowYear, nowMonth, getMonthDays(nowMonth));

return formatDate(monthEndDate);

}

//获得上月开端时候

function getLastMonthStartDate(){

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

return formatDate(lastMonthStartDate);

}

//获得上月停止时候

function getLastMonthEndDate(){

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

return formatDate(lastMonthEndDate);

}

//获得本季度的开端日期

function getQuarterStartDate(){

var quarterStartDate = new Date(nowYear, getQuarterStartMonth(), 1);

return formatDate(quarterStartDate);

}

//或的本季度的停止日期

function getQuarterEndDate(){

var quarterEndMonth = getQuarterStartMonth() + 2;

var quarterStartDate = new Date(nowYear, quarterEndMonth, getMonthDays(quarterEndMonth));

return formatDate(quarterStartDate);

}

function getStartWeek(){

//起止日期数组

var startStop=new Array();

//获取当前时间

var currentDate=new Date();

//返回date是一周中的某一天

var week=currentDate.getDay();

//返回date是一个月中的某一天

var month=currentDate.getDate();

//一天的毫秒数

var millisecond=1000*60*60*24;

//减去的天数

var minusDay=week!=0?week-1:6;

//获得当前周的第一天

var currentWeekDayOne=new Date(currentDate.getTime()-(millisecond*minusDay));

//上周最后一天即本周开始的前一天

var priorWeekLastDay=new Date(currentWeekDayOne.getTime()-millisecond);

//上周的第一天

var priorWeekFirstDay=new Date(priorWeekLastDay.getTime()-(millisecond*6));

return formatDate(priorWeekFirstDay);

};

function getEndWeek(){

//起止日期数组

var startStop=new Array();

//获取当前时间

var currentDate=new Date();

//返回date是一周中的某一天

var week=currentDate.getDay();

//返回date是一个月中的某一天

var month=currentDate.getDate();

//一天的毫秒数

var millisecond=1000*60*60*24;

//减去的天数

var minusDay=week!=0?week-1:6;

//获得当前周的第一天

var currentWeekDayOne=new Date(currentDate.getTime()-(millisecond*minusDay));

//上周最后一天即本周开始的前一天

var priorWeekLastDay=new Date(currentWeekDayOne.getTime()-millisecond);

//上周的第一天

var priorWeekFirstDay=new Date(priorWeekLastDay.getTime()-(millisecond*6));

return formatDate(priorWeekLastDay);

};

//时间转换

// 转yyyy-dd-mm

function formatDateTime(inputTime) {

    if(inputTime == '' || inputTime === undefined || inputTime==null){

        return '';

    }

var date = new Date(inputTime);

var y = date.getFullYear();

var m = date.getMonth() + 1;

m = m < 10 ? ('0' + m) : m;

var d = date.getDate();

d = d < 10 ? ('0' + d) : d;

var h = date.getHours();

h = h < 10 ? ('0' + h) : h;

var minute = date.getMinutes();

var second = date.getSeconds();

minute = minute < 10 ? ('0' + minute) : minute;

second = second < 10 ? ('0' + second) : second;

return y + '-' + m + '-' + d;

};

//时间获取

function GetDateStr(AddDayCount) {

var dd = new Date();

dd.setDate(dd.getDate()+AddDayCount);//获取AddDayCount天后的日期

var y = dd.getFullYear();

var m = (dd.getMonth()+1)<10?"0"+(dd.getMonth()+1):(dd.getMonth()+1);//获取当前月份的日期，不足10补0

var d = dd.getDate()<10?"0"+dd.getDate():dd.getDate();//获取当前几号，不足10补0

return y+"-"+m+"-"+d;

}

// console.log("半年前："+GetDateStr(-180));

// console.log("三月前："+GetDateStr(-90));

// console.log("一月前："+GetDateStr(-30));

// console.log("昨天："+GetDateStr(-1));

// console.log("今天："+GetDateStr(0));

// console.log("明天："+GetDateStr(1));

// console.log("后天："+GetDateStr(2));

// console.log("一月后："+GetDateStr(30));

// console.log("三月后："+GetDateStr(90));

// console.log("半年后："+GetDateStr(180));

//这是修改的yyyy-dd-mm格式

function formatDateNew(date) {

var myyear = date.getFullYear();

var mymonth = date.getMonth()+1;

var myweekday = date.getDate();

 

if(mymonth < 10){

mymonth = "0" + mymonth;

}

if(myweekday < 10){

myweekday = "0" + myweekday;

}

return (myyear+"-"+mymonth + "-" + myweekday);

}

 

//今天

// var getCurrentDate = new Date(nowYear, nowMonth, nowDay);

// var getCurrentDate = formatDateNew(getCurrentDate)

// //昨天

// var getYesterdayDate = new Date(nowYear, nowMonth, nowDay - 1);

// var getYesterdayDate = formatDateNew(getYesterdayDate);

// //获得本周的开始日期

// var getWeekStartDate = new Date(nowYear, nowMonth, nowDay - nowDayOfWeek);

// var getWeekStartDate = formatDateNew(getWeekStartDate);

// //获得本周的结束日期

// var getWeekEndDate = new Date(nowYear, nowMonth, nowDay + (6 - nowDayOfWeek));

// var getWeekEndDate = formatDateNew(getWeekEndDate);

// //获得上周的开始日期

// var getUpWeekStartDate = new Date(nowYear, nowMonth, nowDay - nowDayOfWeek -7);

// var getUpWeekStartDate = formatDateNew(getUpWeekStartDate);

// //获得上周的结束日期

// var getUpWeekEndDate = new Date(nowYear, nowMonth, nowDay + (6 - nowDayOfWeek - 7));

// var getUpWeekEndDate = formatDateNew(getUpWeekEndDate);

// //获得本月的开始日期

// var getMonthStartDate = new Date(nowYear, nowMonth, 1);

// var getMonthStartDate = formatDateNew(getMonthStartDate);

// //获得本月的结束日期

// var getMonthEndDate = new Date(nowYear, nowMonth, getMonthDays(nowMonth));

// var getMonthEndDate = formatDateNew(getMonthEndDate);

// //获得上月开始时间

// var getLastMonthStartDate = new Date(nowYear, lastMonth, 1);

// var getLastMonthStartDate = formatDateNew(getLastMonthStartDate);

// //获得上月结束时间

// var getLastMonthEndDate = new Date(nowYear, lastMonth, getMonthDays(lastMonth));

// var getLastMonthEndDate = formatDateNew(getLastMonthEndDate);