<script language="JavaScript">
<!--
/*
===========================================
//得到日期年月日等加数字后的日期
===========================================
*/
Date.prototype.dateAdd = function(interval,number)
{
var date = this; switch(interval)
{
case "y" :
date.setFullYear(date.getFullYear()+number);
return date;
case "q" :
date.setMonth(date.getMonth()+number*3);
return date; case "m" :
date.setMonth(date.getMonth()+number);
return date; case "w" :
date.setDate(date.getDate()+number*7);
return date;
case "d" :
date.setDate(date.getDate()+number);
return date; case "h" :
date.setHours(date.getHours()+number);
return date; case "m" :
date.setMinutes(date.getMinutes()+number);
return date; case "s" :
date.setSeconds(date.getSeconds()+number);
return date; default :
date.setDate(d.getDate()+number);
return date;
}
}var d = new Date("2004/12/1");alert(d.dateAdd("d",-6));
//-->
</script>
<!--
/*
===========================================
//得到日期年月日等加数字后的日期
===========================================
*/
Date.prototype.dateAdd = function(interval,number)
{
var date = this; switch(interval)
{
case "y" :
date.setFullYear(date.getFullYear()+number);
return date;
case "q" :
date.setMonth(date.getMonth()+number*3);
return date; case "m" :
date.setMonth(date.getMonth()+number);
return date; case "w" :
date.setDate(date.getDate()+number*7);
return date;
case "d" :
date.setDate(date.getDate()+number);
return date; case "h" :
date.setHours(date.getHours()+number);
return date; case "m" :
date.setMinutes(date.getMinutes()+number);
return date; case "s" :
date.setSeconds(date.getSeconds()+number);
return date; default :
date.setDate(d.getDate()+number);
return date;
}
}var d = new Date("2004/12/1");alert(d.dateAdd("d",-6));
//-->
</script>
today = new Date();
if(TemIntY == "" || isNaN(TemIntY) || parseInt(TemIntY) >10 || parseInt(TemIntY) < -10) temyear =today.getFullYear();
else{temyear = parseInt(today.getFullYear()) + parseInt(TemIntY);}
if(TemIntM == "" || isNaN(TemIntM)) temmonth = today.getMonth()+1;
else{today.setMonth(TemIntM);temmonth = today.getMonth()+1;}
if(TemIntD == "" || isNaN(TemIntD)) temdate = today.getDate();
else{today.setDate(TemIntD);temdate = today.getDate();}
if(temmonth < 10) temmonth = "0" + temmonth;
if(temdate < 10) temdate = "0" + temdate;
return temyear+"-"+ temmonth +"-"+ temdate;
}
这是一个在当前日期的基础上加减年月日的,你可以研究一下,
var basedate=new Date(2004,10,6);
var enddate=new Date(n*24*60*60*1000+basedate.getTime());
return enddate;
}
n是天数,为负表示后退的天数,为正表示前进的天数
js中月份是从0至11来表示的
function newdate(basedate,n){
var enddate=new Date(n*24*60*60*1000+basedate.getTime());
alert(enddate.toLocaleString());
return enddate;
}
谢谢大家~~!!