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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title></title>
</head>
<body>
<button onClick="btnCount_Click()">计算相差天数</button>
<script language="JavaScript">
function btnCount_Click(){
s1 = "2002-1-10"
s2 = "2002-10-1"
alert(DateDiff(s1,s2))
}
//计算天数差的函数，通用
function DateDiff(sDate1, sDate2){ //sDate1和sDate2是2002-12-18格式
var aDate, oDate1, oDate2, iDays
aDate = sDate1.split("-")
oDate1 = new Date(aDate[1] + '-' + aDate[2] + '-' + aDate[0]) //转换为12-18-2002格式
aDate = sDate2.split("-")
oDate2 = new Date(aDate[1] + '-' + aDate[2] + '-' + aDate[0])
iDays = parseInt(Math.abs(oDate1 - oDate2) / 1000 / 60 / 60 /24) //把相差的毫秒数转换为天数
return iDays
}
</script>
</body>
</html>
