获取当前日期之前之后任意时间

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<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.getFullYear();
   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> <html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<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.getFullYear();
   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>

转载自http://www.cnblogs.com/gengaixue/archive/2011/07/05/2098299.html