利用javascript实现在原时间上加几天

<%@ 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>

posted on 2008-04-25 03:17 维能开发室（吴晓军）阅读(1970) 评论(11) 收藏举报