var now = new Date();
var nowDayOfWeek = now.getDay();
var nowDay = now.getDate();
var nowMonth = now.getMonth();
var nowYear = now.getYear();
nowYear += (nowYear < 2000) ? 1900 : 0;
var lastMonthDate = new Date();
lastMonthDate.setDate(1);
lastMonthDate.setMonth(lastMonthDate.getMonth() - 1);
var lastYear = lastMonthDate.getYear();
var lastMonth = lastMonthDate.getMonth();
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);
}
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;
}
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;
}
export function getWeekStartDate() {
var weekStartDate = new Date(nowYear, nowMonth, nowDay - nowDayOfWeek);
return formatDate(weekStartDate);
}
export function getWeekEndDate() {
var weekEndDate = new Date(nowYear, nowMonth, nowDay + (6 - nowDayOfWeek));
return formatDate(weekEndDate);
}
export function getMonthStartDate() {
var monthStartDate = new Date(nowYear, nowMonth, 1);
return formatDate(monthStartDate);
}
export function getMonthEndDate() {
var monthEndDate = new Date(nowYear, nowMonth, getMonthDays(nowMonth));
return formatDate(monthEndDate);
}
function getLastMonthStartDate() {
var lastMonthStartDate = new Date(nowYear, lastMonth, 1);
return formatDate(lastMonthStartDate);
}
function getLastMonthEndDate() {
var lastMonthEndDate = new Date(nowYear, lastMonth, getMonthDays(lastMonth));
return formatDate(lastMonthEndDate);
}
function getQuarterStartDate() {
var quarterStartDate = new Date(nowYear, getQuarterStartMonth(), 1);
return formatDate(quarterStartDate);
}
function getQuarterEndDate() {
var quarterEndMonth = getQuarterStartMonth() + 2;
var quarterStartDate = new Date(nowYear, quarterEndMonth, getMonthDays(quarterEndMonth));
return formatDate(quarterStartDate);
}