1.第一种
<html>
<body>
<head>
<title>无标题页</title>
<script type="text/javascript">
function DateDiff(sDate1,sDate2)
{
var arrDate,objDate1,objDate2,intDays;
arrDate=sDate1.split("-");
objDate1=new Date(arrDate[1]+'-'+arrDate[2]+'-'+arrDate[0]);
arrDate=sDate2.split("-");
objDate2=new Date(arrDate[1] + '-'+arrDate[2]+'-'+arrDate[0]);
intDays=parseInt(Math.abs(objDate1-objDate2)/1000/60/60/24);
return intDays;
}
function check()
{
var beginday = document.getElementById("Text1").value;
var lastday = document.getElementById("Text4").value;
var DayNum = DateDiff(beginday,lastday);
alert(DayNum);
//就可以判断出相差的天数,然后你再判断时间,如果结束时间的小时数,小于开始时间的小时数,那么天数就减一天,开始小时数加24,不懂再问我
}
</script>
</head>
<body>
<form id="form1">
开始日期:<input id="Text1" type="text" value="2010-7-12" />
<input id="Text2" type="text" value="18" />时<input id="Text3" type="text"
value="25" />分<br />
<br />
结束时间:<input id="Text4" type="text" value="2010-7-30" />
<input id="Text5" type="text" value="19" />时<input id="Text6" type="text"
value="58" />分<br />
<br />
<input id="Button1" type="button" value="button" onclick="return check()" /></form>
</body>
</html>
2.第二种
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<script type="text/javascript">
var getOffDays = function(startDate, endDate) {
var mmSec = (endDate.getTime() - startDate.getTime()); //得到时间戳相减 得到以毫秒为单位的差
return (mmSec / 3600000 / 24); //单位转换为天并返回
};
alert(getOffDays(new Date(2010,10,24), new Date(2010,12,3)));
</script>
</head>
<body>
</body>
</html>