js获取当前日期的前一天、一月、一年的日期 明天、后天

js获取当前日期的前一天、一月、一年的日期 明天、后天

分类： js获取当前日期的前一天、一月、一年的日期 明天、后天 2012-02-15 13:09 3270人阅读 评论(0) 收藏 举报

datefunctionhtml

 

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;
  }

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>    
• <script language="JavaScript" type="text/javascript">    
• function GetDateStr(AddDayCount)    
• {    
• var dd = new Date();    
• dd.setDate(dd.getDate()+AddDayCount);//获取AddDayCount天后的日期    
• var y = dd.getYear();    
• var m = dd.getMonth()+1;//获取当前月份的日期    
• var d = dd.getDate();    
• return y+"-"+m+"-"+d;    
• }    
• document.write("前天："+GetDateStr(-2));    
• document.write("<br />昨天："+GetDateStr(-1));    
• document.write("<br />今天："+GetDateStr(0));    
• document.write("<br />明天："+GetDateStr(1));    
• document.write("<br />后天："+GetDateStr(2));    
• document.write("<br />大后天："+GetDateStr(3));    
• </script>    
•   
• </body>    
• </html>