JS加任意时间
//格式化日期为年4位，月日时分秒为2位的格式
function formateDate(year,month,day,hour,minute,second){
if(month<9)month="0"+month;
if(day<9) day="0"+day;
if(hour<9)hour="0"+hour;
if(minute<9)minute="0"+minute;
if(second<9)second="0"+second;
return year+"-"+month+"-"+day+" "+hour+":"+minute+":"+second;
}
//函数调用说明
//date 格式为2011-08-09 19:21:00，每位数字两个字符，如果是单数，则必须前面加0;
//field 取值second minute hour day month year
//n 取值second(-60~60) minute(-60~60) hour(-24~24) day(-31~30) month(-12~12) year(无穷小~无穷大)以上取值区间均不含头尾值。
function showdate(date,field,n){//date为基数时间格式2011-08-09 19:21:00，n为秒，可正数也可负数
var date = date.split(' ');
var time = date[1].split(':');//时间19:21:00
var date = date[0].split('-');//日期2011-08-09
var v_second = parseFloat(time[2]);
var v_minute = parseFloat(time[1]);
var v_hour = parseFloat(time[0]);
var v_day = parseFloat(date[2]);
var v_month = parseFloat(date[1]);
var v_year = parseFloat(date[0]);
if(field=='second'){
if(n>=60)return '';
if(n<-60)return '';
v_second = v_second+n;
if(v_second>=0&&v_second<60){ // 0=<x<60
return formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
}else if(v_second>-60&&v_second<0){// -60<x<0
v_second = 60+v_second;
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'minute',-1);
}else{//因为 控制了n只能在-60到60之间取值（不含首尾），所以上面两个判断之后只剩下了 60=<x<120的可能了
v_second = v_second-60;
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'minute',1);
}
}else if(field=='minute'){
if(n>60)return '';
if(n<-60)return '';
v_minute = v_minute+n;
if(v_minute<60&&v_minute>=0){// 0=<x<60
return formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
}else if(v_minute<0&&v_minute>-60){// -60<x<0
v_minute = v_minute+60;
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'hour',-1);
}else{// 60=<x<120
v_minute = v_minute-60;
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'hour',1);
}
}else if(field=='hour'){
if(n>24)return '';
if(n<-24)return '';
v_hour = v_hour+n;
if(v_hour>=0&&v_hour<24){// 0=<x<24
return formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
}else if(v_hour>-24&&v_hour<0){// <-24x<0
v_hour = v_hour+24;
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'day',-1);
}else{// 24=<x<48
v_hour = v_hour -24;
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'day',1);
}
}else if(field=='day'){
if(n>31) return '';
if(n<-31)return '' ;
v_day = v_day+n;
var flag = false;//平润年标致 true表示是闰年
if(v_year%4==0&&v_year%100!=0||v_year%400==0)flag=true;
if(v_month==2){
if(flag){//2月闰年
if(v_day<=29&&v_day>0){ //0<x<=29&&闰年&&2月份
return formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
}else if(v_day>-29&&v_day<=0){// -29<x<=0&&闰年&&2月份
v_day = v_day + 31;//本月是二月份，向前一个月份借一个月，借的是一月份，一月份有31天
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'month',-1);
}else{// 29<x<(29+31)&&闰年&&2月份
v_day=v_day-29;
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'month',1);
}
}else{//2月非闰年
if(v_day<=28&&v_day>0){//0=<x<=28&&平年&&2月
return formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
}else if(v_day>-28&&v_day<=0){//-28<x<=0&&平年&&2月
v_day=v_day+31;//本月是二月份，向前一个月份借一个月，借的是一月份，一月份有31天
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'month',-1);
}else{//28<x<(28+31)&&平年&&2月
v_day=v_day-28;
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'month',1);
}
}
}else if(v_month==1||v_month==3||v_month==5||v_month==7||v_month==8||v_month==10||v_month==12){//1 3 5 7 8 10 12月份都有31天
if(v_day<=31&&v_day>0){// 0<x<=31&& x in (1,3,5,7,8,10,12)
return formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
}else if(v_day<=0&&v_day>-31){// -31<x<=0&& x in (1,3,5,7,8,10,12)
var marchFlag = false;
if(v_month==3&&flag){//当前月份是润年的3月，那向上一个月就只能借到29天
v_day=v_day+29;
marchFlag = true;
}else if(v_month==3&&!flag){//当前月份是平年的3月，那向上一个月就只能借到28天
v_day=v_day+28;
marchFlag = true;
}
if(marchFlag == true && v_day<=0){//如果借了2月的天数之后 还是小于0 ，那么要继续向上一个月，也就是一月借31天
v_day=v_day+31;
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'month',-2);//借了2月份的 还要借1月份的
}else if(v_day<=0){
v_day=v_day+30;
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'month',-1);
}else{
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'month',-1);
}
}else{// 31<x<（31+31）&& x in (1,3,5,7,8,10,12)
v_day=v_day-31;
if(v_day>28&&!flag&&v_month==1){//当前是平年的1月份，减去了31天后，还大于28天，二月份只有28天，也装不下，所以还要加一个月
v_day=v_day-28;
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'month',2);
}else if(v_day>29&&flag&&v_month==1){//当前是润年的1月份，减去了31天后，还大于29天，二月份只有29天，也装不下，所以还要加一个月
v_day=v_day-29;
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'month',2);
}else if(v_day>30&&v_month!=7){//减了31天后还大于30天，并且当前月份不是7月，那么还要加一个月。（因为非7月份的下一个月最多只有30天。）
v_day = v_day-30;
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'month',2);
}else{
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'month',1);
}
}
}else{//非1 3 5 7 8 10 12月 非2月份 只有30天
if(v_day<=30&&v_day>0){// 0<x<=30 && x in(4,6,9,11)
return formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
}else if(v_day>-31&&v_day<=0){// (1-31)<x<=0 && x in(4,6,9,11)
v_day=v_day+31;//当前月份的上一个月 无论如何都会是31天
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'month',-1);
}else{// 30<x<(30+31)
v_day=v_day-30;
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'month',1);
}
}
}else if(field=='month'){
if(n>12)return '';
if(n<-12)return '';
v_month= v_month+n;
if(v_month<=12&& v_month>0){// 0<x<=12
return formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
}else if(v_month>-12&&v_month<=0){// -12<x<=0
v_month=v_month+12;
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'year',-1);
}else{// 12<x<24
v_month=v_month-12;
var temp = formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
return showdate(temp,'year',1);
}
}else if(field=='year'){
v_year =v_year+n;
//以下代码处理类似 2010-02-29 12:12:12加一年后变成2011-02-29 12:12:12的情况，2011年并不是闰年，所以没有29号
var flag = false;//平润年标致 true表示是闰年
if(v_year%4==0&&v_year%100!=0||v_year%400==0)flag=true;
if(v_month==2&&v_day==28&&flag)v_day=29;
return formateDate(v_year,v_month,v_day,v_hour,v_minute,v_second);
}
}
function date1MinusDate2(date1,date2){
var date1 = date1.split(' ');
var time1 = date1[1].split(':');//时间19:21:00
var date1 = date1[0].split('-');//日期2011-08-09
var second1 = parseFloat(time1[2]);
var minute1 = parseFloat(time1[1]);
var hour1 = parseFloat(time1[0]);
var day1 = parseFloat(date1[2]);
var month1 = parseFloat(date1[1])-1;
var year1 = parseFloat(date1[0]);
debugger;
var date2 = date2.split(' ');
var time2 = date2[1].split(':');//时间19:21:00
var date2 = date2[0].split('-');//日期2011-08-09
var second2 = parseFloat(time2[2]);
var minute2 = parseFloat(time2[1]);
var hour2 = parseFloat(time2[0]);
var day2 = parseFloat(date2[2]);
var month2 = parseFloat(date2[1])-1;
var year2 = parseFloat(date2[0]);
var d1 = new Date(year1,month1,day1,hour1,minute1,second1);
var d2 = new Date(year2,month2,day2,hour2,minute2,second2);
var result = (d1.getTime()-d2.getTime())/(24*60*60*1000)
return result;
}
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