// 年积日转年月日
function isLeapYear(year) {
var ret = false;
year = parseInt(year)
if (((0 == (year % 4)) && (0 != (year % 100))) || (0 == (year % 400))) {
ret = true;
} else {
ret = false;
}
return ret;
}
function day2date(daytime) {
var monthDay_common = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334];
var monthDay_leap = [0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335];
var monthDay;
var month = 0;
var day = 0;
var year = daytime.substr(0, 4);
var time_DD = daytime.substr(4, 3);
var hour = daytime.substr(7, 2);
var minute = daytime.substr(9, 2);
var leapYear = isLeapYear(year)
if (leapYear) {
monthDay = monthDay_leap
} else {
monthDay = monthDay_common
}
for (month = 0; month < 12; month++) {
if (monthDay[month] >= time_DD) {
break;
}
}
day = time_DD - monthDay[month - 1];
var date = year + '-' + month + '-' + day + ' ' + hour + ':' + minute;
return date;
}
day2date('201928501002505')
年积日转年月日
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转载自blog.csdn.net/strong90/article/details/103615056
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