文章出自：http://blog.csdn.net/2004v2004/article/details/7260836#
此文为个人整理。
function getYestoday(date){???
?var yesterday_milliseconds=date.getTime()-1000*60*60*24;????
?var yesterday = new Date();????
???? yesterday.setTime(yesterday_milliseconds);????
??
?var strYear = yesterday.getFullYear();?
?var strDay = yesterday.getDate();?
?var strMonth = yesterday.getMonth()+1;
?if(strMonth<10)?
?{?
??strMonth="0"+strMonth;?
?}?
?datastr = strYear+"-"+strMonth+"-"+strDay;
?return datastr;
? }
?
? //获得上个月在昨天这一天的日期
? function getLastMonthYestdy(date){
???? var daysInMonth = new Array([0],[31],[28],[31],[30],[31],[30],[31],[31],[30],[31],[30],[31]);
? var strYear = date.getFullYear();?
? var strDay = date.getDate();?
? var strMonth = date.getMonth()+1;
? if(strYear%4 == 0 && strYear%100 != 0){
??daysInMonth[2] = 29;
? }
? if(strMonth - 1 == 0)
? {
??strYear -= 1;
??strMonth = 12;
? }
? else
? {
??strMonth -= 1;
? }
???? strDay = daysInMonth[strMonth] >= strDay ? strDay : daysInMonth[strMonth];
? if(strMonth<10)?
? {?
??strMonth="0"+strMonth;?
? }
? if(strDay<10)?
? {?
??strDay="0"+strDay;?
? }
? datastr = strYear+"-"+strMonth+"-"+strDay;
? return datastr;
? }
?
? //获得上一年在昨天这一天的日期
? function getLastYearYestdy(date){
? var strYear = date.getFullYear() - 1;?
? var strDay = date.getDate();?
? var strMonth = date.getMonth()+1;
? if(strMonth<10)?
? {?
??strMonth="0"+strMonth;?
? }
? if(strDay<10)?
? {?
??strDay="0"+strDay;?
? }
? datastr = strYear+"-"+strMonth+"-"+strDay;
? return datastr;
? }
?
//获得下个月在昨天这一天的日期??
? function getLastMonthYestdy2(date){??
???? var daysInMonth = new Array([0],[31],[28],[31],[30],[31],[30],[31],[31],[30],[31],[30],[31]);??
???? var strYear = date.getFullYear();????
???? var strDay = date.getDate();????
???? var strMonth = date.getMonth()+1;??
???? if(strYear%4 == 0 && strYear%100 != 0){??
??????? daysInMonth[2] = 29;??
???? }??
???? if(strMonth + 1 == 13)??
???? {??
??????? strYear += 1;??
??????? strMonth = 1;??
???? }??
???? else?
???? {??
??????? strMonth += 1;??
???? }??
???? strDay = daysInMonth[strMonth] >= strDay ? strDay : daysInMonth[strMonth];??
???? if(strMonth<10)????
???? {????
??????? strMonth="0"+strMonth;????
???? }??
???? if(strDay<10)????
???? {????
??????? strDay="0"+strDay;????
???? }??
???? datastr = strYear+"-"+strMonth+"-"+strDay;??
???? return datastr;??
? }??
- <html>? ??
- <head>? ??
- <meta?http-equiv="Content-Type"?content="text/html;?charset=gb2312">? ??
- <title>js获取日期：前天、昨天、今天、明天、后天?-?Liehuo.Net</title>? ??
- </head>? ??
- ??
- <body
