js日期处理方法

<script language="javascript" type="text/javascript">

//获取两个日期相差的天数
var dt1 = new Date("2008/06/19");
var dt2 = new Date("2008/08/08");
var days = parseInt(Math.abs(dt2 - dt1 ) / 1000 / 60 / 60 /24);
alert("今天距北京奥运还有"+days +"天！");


//给某个日期添加天数
function addDaysToDate(myDate,days)
 {
        return new Date(myDate.getTime() + days*24*60*60*1000);
 }

var a = addDaysToDate(dt1,50);
alert(a.getFullYear()+"年"+(a.getMonth() + 1)+"月"+a.getDate()+"日");


</script>

转载于:https://www.cnblogs.com/xiangxiangyuan/archive/2008/09/18/1293767.html