js取得常用時間帯(週、月、四半期)
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/**
* 、 、 、 、
*/
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();
// :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);
}
//
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;
}
//
function getWeekStartDate() {
var weekStartDate = new Date(nowYear, nowMonth, nowDay - nowDayOfWeek);
return formatDate(weekStartDate);
}
//
function getWeekEndDate() {
var weekEndDate = new Date(nowYear, nowMonth, nowDay + (6 - nowDayOfWeek));
return formatDate(weekEndDate);
}
//
function getMonthStartDate(){
var monthStartDate = new Date(nowYear, nowMonth, 1);
return formatDate(monthStartDate);
}
//
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);
}
//
function DateDiff(sDate1, sDate2) {
var aDate, oDate1, oDate2, iDays;
aDate = sDate1.split("-");
oDate1 = new Date(aDate[0], aDate[1] - 1, aDate[2]);
aDate = sDate2.split("-");
oDate2 = new Date(aDate[0], aDate[1] - 1, aDate[2]);
iDays = parseInt(Math.abs(oDate1 - oDate2) / 1000 / 60 / 60 / 24);
if ((oDate1 - oDate2) < 0) {
return -iDays;
}
return iDays;
}
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