利用javascript实现在原时间上加几天-技术开发专区

利用javascript实现在原时间上加几天

作者：ITPUB论坛编辑： nancy 2008-04-27 00:00
【IT168技术文档】
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<!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>无标题页</title>
<script language="javascript" type="text/javascript" src="My97DatePicker/WdatePicker.js"></script>
</head>
<script language="javascript" type="text/javascript">
function AddDayByDate(form,num)
{
if(form.value != '')
{
var strDate = form.value;
var b = strDate.split("-");
var month = parseInt(b[1]);
var year =parseInt(b[0]);
var day =parseInt(b[2]);
var num = parseInt(num);
var check4=(0==year%4);            //判断年份是否能被4整除
            var check100=(0==year%100);        //判断年份是否能被100整除
            var check400=(0==year%400);        //判断年份是否能被400整除
            if((check4 && !check100) || check400)
{
if(month==2)
{
if(day+num > 29)
{
month =month+1;
day= day+num-29;
}
else
{
day= day+num;
}
}
}
else
{
if(month==2)
{
if(day+num > 28)
{
month =month+1;
day= day+num-28;
}
else
{
day= day+num;
}
}
}
if(month==1 ||month==3 ||month==5 ||month==7 ||month==8 ||month==10 ||month==12 )
{
if(day+num > 31)
{
month =month+1;
if(month>12)
{
month =1;
year++;
}
day= day+num-31;
}
else
{
day= day+num;
}
}
if(month==4 ||month==6 ||month==9 ||month==11 )
{
if(day+num > 30)
{
month =month+1;
day= day+num-30;
}
else
{
day= day+num;
}
}
if(month < 10)
month = "0"+ month;
if(day < 10)
day = "0"+ day;
strDate = year+"-"+month+"-"+day;
document.all.txtOutput.value = strDate;
}
}
</script>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="txtOutput" runat="server" />
<asp:TextBox ID="txtInput" runat="server" onfocus="new WdatePicker(this,'%Y-%M-%D',false);" onpropertychange="AddDayByDate(this,'2');"></asp:TextBox>
</div>
</form>
</body>
</html>
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