varTimeUtils = ({
getOffsetYear: function (beginDate, XYear) {
return this.getOffsetMonth(beginDate, XYear * 12);
},
getOffsetMonth: function (beginDate, XMonth) {
var matrix = beginDate.substr(0, 10).split("-");
var year = matrix[0] * 1;
var month = matrix[1] * 1;
var day = matrix[2] * 1;
var newMonth = month + XMonth;
if (newMonth > 12 || newMonth < 1) {
year += newMonth / 12;
newMonth = newMonth % 12;
if (newMonth === 0) {
year--;
newMonth = 12;
}
}
var newDay = day;
if ((newDay > this.getLastDayOfMonth(year, newMonth)) || (day === this.getLastDayOfMonth(year, month) )) {
newDay = this.getLastDayOfMonth(year, newMonth);
}
var date = new Date(year, newMonth - 1, newDay);
return date.format("yyyy-MM-dd");
},
getEndXYear: function (beginDate, XYear) {
return this.getEndXMonth(beginDate, XYear * 12);
},
getEndXMonth: function (beginDate, XMonth) {
var matrix = beginDate.substr(0, 10).split("-");
var year = matrix[0] * 1;
var month = matrix[1] * 1;
var day = matrix[2] * 1;
var newMonth = month + XMonth;
if (newMonth > 12 || newMonth < 1) {
year += newMonth / 12;
newMonth = newMonth % 12;
if (newMonth === 0) {
year--;
newMonth = 12;
}
}
var newDay = day - 1;
if (newDay > this.getLastDayOfMonth(year, newMonth)) {
newDay = this.getLastDayOfMonth(year, newMonth);
}
var date = new Date(year, newMonth - 1, newDay);
return date.format("yyyy-MM-dd");
},
getLastDayOfMonth: function (year, month) {
year = year * 1;
month = month * 1;
//大月
var day = 31;
//小月
if (month === 4 || month === 6 || month === 9 || month === 11) {
day = 30
}
//2月
else if (month === 2) {
if (((year % 4) === 0) && ((year % 100) !== 0) || ((year % 400) === 0)) {
day = 29
} else {
day = 28
}
}
return day;
},
//判斷是否為閏年
isLeapYear: function (year) {
year = year * 1;
if (((year % 4) === 0) && ((year % 100) !== 0) || ((year % 400) === 0)) {
return (true);
} else {
return (false);
}
},
})
