项目中有个对时间天数计算的处理，仅在IE中做过测试，并可以使用。分享出来，希望对大家有帮助。
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Datetime.aspx.cs" Inherits="Datetime" %>
<!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" >
<head runat="server">
<title>Untitled Page</title>
<script language="javascript" src="js/WebCalendar.js" type="text/javascript" charset="gb2312"></script>
<script>
function DisplayTime()
{
var BegDate=document.form1.txtBegDate.value;
var EndDate=document.form1.txtEndDate.value
if(BegDate=="")
{
alert("请输入开始时间！");
return false;
}
if(EndDate=="")
{
alert("请输入结束时间！");
return false;
}
if(BegDate>EndDate)
{
alert("结束时间不能小于开始时间！");
return false;
}
BegDate = Date.parse(BegDate.replace("-", "/"));
EndDate = Date.parse(EndDate.replace("-", "/"));
alert(BegDate);
var temp=(EndDate-BegDate)/(1000*3600*24)+1;
alert(temp);
if(5>temp)
{
alert("持续天数必须小于间隔天数！");
return false;
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="txtBegDate" runat="server" onclick="return SelectDate(this,'yyyy-MM-dd');"></asp:TextBox>
<br />
<asp:TextBox ID="txtEndDate" runat="server" onclick="return SelectDate(this,'yyyy-MM-dd');"></asp:TextBox>
<br />
<br />
<asp:Button ID="btnTest" runat="server" Text="Test" OnClientClick="return DisplayTime()" />
</div>
</form>
</body>
</html>