获取昨天、今天、上周、本周、本季度、本月、上月的开始日期、结束日期

/**
 * 获取昨天、今天、上周、本周、本季度、本年、本月、上月、上季度、上年的开始日期、结束日期
 */
var now = new Date();                    //当前日期
var hour = now.getHours();//得到小时
var minu = now.getMinutes();//得到分钟
var sec = now.getSeconds();//得到秒
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();


function addZero(i){
   if (i<10) {
      i="0" + i;
   }
   return i;
}
//格式化日期：yyyy-MM-dd HHmmss
function formatHHmmssDate(date) {
   var myyear = addZero(date.getFullYear());
   var mymonth =  addZero(date.getMonth()+1);
   var myweekday =  addZero(date.getDate());
   var myhour= addZero(date.getHours());
   var myminu= addZero(date.getMinutes());
   var mysec= addZero(date.getSeconds());
   return (myyear+"-"+mymonth + "-" + myweekday+" "+myhour+":"+myminu+":"+mysec);
}

//格式化日期：yyyy-MM-dd
function formatDate(date) {
   var myyear = addZero(date.getFullYear());
   var mymonth =  addZero(date.getMonth()+1);
   var myweekday =  addZero(date.getDate());
   return (myyear+"-"+mymonth + "-" + myweekday);
}
//格式化日期：yyyy-MM
function formatYearMonthDate(date) {
   var myyear = addZero(date.getFullYear());
   var mymonth =  addZero(date.getMonth()+1);
   return (myyear+"-"+mymonth);
}

//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;
}

//获得本季度的开始月份
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;
}


//获得今天
function getTodayDate() {
   var now = new Date();   //当前日期
var hour = now.getHours();//得到小时
var minu = now.getMinutes();//得到分钟
var sec = now.getSeconds();//得到秒
   //开始日期
var weekStartDate = new Date(nowYear, nowMonth, nowDay );
   weekStartDate= formatDate(weekStartDate);
   $('#startTime').datebox('setValue', weekStartDate+" 00:00:00");
   //结束日期
var weekEndDate = new Date(nowYear, nowMonth, nowDay,hour,minu,sec);
   weekEndDate= formatHHmmssDate(weekEndDate);
   $('#endTime').datebox('setValue',weekEndDate);
}
//获得昨天
function getYesterdayDate() {
   //开始日期
var weekStartDate = new Date(nowYear, nowMonth, nowDay -1);
   weekStartDate= formatDate(weekStartDate);
   $('#startTime').datebox('setValue', weekStartDate+" 00:00:00");
   //结束日期
var weekEndDate = new Date(nowYear, nowMonth, nowDay -1);
   weekEndDate= formatDate(weekEndDate);
   $('#endTime').datebox('setValue',weekEndDate+" 23:59:59");
}


//获得上周
function getLastWeekDate() {
   //开始日期
var weekStartDate = new Date(nowYear, nowMonth, nowDay - nowDayOfWeek-7);
   weekStartDate= formatDate(weekStartDate);
   $('#startTime').datebox('setValue', weekStartDate+" 00:00:00");
   //结束日期
var weekEndDate = new Date(nowYear, nowMonth, nowDay - nowDayOfWeek-1);
   weekEndDate= formatDate(weekEndDate);
   $('#endTime').datebox('setValue',weekEndDate+" 23:59:59");
}

//获得本周
function getWeekDate() {
   var now = new Date();   //当前日期
var hour = now.getHours();//得到小时
var minu = now.getMinutes();//得到分钟
var sec = now.getSeconds();//得到秒
   //开始日期
var weekStartDate = new Date(nowYear, nowMonth, nowDay - nowDayOfWeek);
   console.log(weekStartDate)
   weekStartDate= formatDate(weekStartDate);
   $('#startTime').datebox('setValue', weekStartDate+" 00:00:00");
   //结束日期
var weekEndDate = new Date(nowYear, nowMonth, nowDay,hour,minu,sec);
   weekEndDate= formatHHmmssDate(weekEndDate);
   $('#endTime').datebox('setValue',weekEndDate);
}


//获得本月
function getMonthDate(){
   var now = new Date();   //当前日期
var hour = now.getHours();//得到小时
var minu = now.getMinutes();//得到分钟
var sec = now.getSeconds();//得到秒
   //开始日期
var monthStartDate = new Date(nowYear, nowMonth, 1);
   monthStartDate= formatDate(monthStartDate);
   $('#startTime').datebox('setValue', monthStartDate);
   //结束日期
var weekEndDate = new Date(nowYear, nowMonth, nowDay,hour,minu,sec);
   weekEndDate= formatHHmmssDate(weekEndDate);
   $('#endTime').datebox('setValue',weekEndDate);
}


//获得上月
function getLastMonthDate(){
   //开始时间
var lastMonthStartDate = new Date(nowYear, lastMonth, 1);
   monthStartDate= formatDate(lastMonthStartDate);
   $('#startTime').datebox('setValue', monthStartDate);
   //结束时间
var lastMonthEndDate = new Date(nowYear, lastMonth, getMonthDays(lastMonth));
   lastMonthEndDate= formatDate(lastMonthEndDate);
   $('#endTime').datebox('setValue',lastMonthEndDate);
}


//获得本季度
function getQuarterDate(){
   var now = new Date();   //当前日期
var hour = now.getHours();//得到小时
var minu = now.getMinutes();//得到分钟
var sec = now.getSeconds();//得到秒
   //开始日期
var quarterStartDate = new Date(nowYear, getQuarterStartMonth());
   quarterStartDate= formatYearMonthDate(quarterStartDate);
   $('#startTime').datebox('setValue', quarterStartDate);
   //结束日期
var weekEndDate = new Date(nowYear, nowMonth, nowDay,hour,minu,sec);
   weekEndDate= formatHHmmssDate(weekEndDate);
   $('#endTime').datebox('setValue',weekEndDate);
}

//获得上季度
function getLastquarterDate(){
   //开始日期
var quarterStartDate = new Date(nowYear, getQuarterStartMonth()-3);
   quarterStartDate= formatYearMonthDate(quarterStartDate);
   $('#startTime').datebox('setValue', quarterStartDate);
   //结束日期
var quarterEndMonth = getQuarterStartMonth()-1;
   var quarterStartDate = new Date(nowYear, quarterEndMonth);
   quarterStartDate= formatYearMonthDate(quarterStartDate);
   $('#endTime').datebox('setValue',quarterStartDate);
}


//获得本年
function getThisYearDate(){
   var now = new Date();   //当前日期
var hour = now.getHours();//得到小时
var minu = now.getMinutes();//得到分钟
var sec = now.getSeconds();//得到秒
   //结束日期
var weekEndDate = new Date(nowYear, nowMonth, nowDay,hour,minu,sec);
   weekEndDate= formatHHmmssDate(weekEndDate);
   $('#endTime').datebox('setValue',weekEndDate);
   //开始日期
$('#startTime').datebox('setValue',nowYear);
}
//获得上年
function getLastyearDate(){
   $('#startTime').datebox('setValue',nowYear-1);
   $('#endTime').datebox('setValue',nowYear-1);
}