JavaScript日期时间间隔计算

Hi

If you need to validate the date span between the two input dates, I would like to suggest you try the following demo, which works fine on our lab:

<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    
<title></title>

    
<script type="text/javascript">

        
function strDateTime(str) {
            
var r = str.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/);
            if (r == nullreturn false;
            
var d = new Date(r[1], r[3- 1, r[4]);
            
return (d.getFullYear() == r[1&& (d.getMonth() + 1== r[3&& d.getDate() == r[4]);
        }

        
function btnValidate_onclick() {
            
var strfrom = document.getElementById("txtfrom").value;
            
var strto = document.getElementById("txtto").value;

            
if (!strDateTime(strfrom) && strDateTime(strto)) {
                alert(
"the date format is not valid");
            }
            
else {
                
if (DateDiff(strto, strfrom) > 180) {//180 days
                    alert("the date span is too big:" + DateDiff(strto, strfrom));
                    
return false;
                }
                
else {
                    
return true;
                }
            }
        }

        
function DateDiff(sDate1, sDate2) {  
            
var aDate, oDate1, oDate2, iDays
            aDate 
= sDate1.split("-")
            oDate1 
= new Date(aDate[1+ '-' + aDate[2+ '-' + aDate[0]) 
            aDate 
= sDate2.split("-")
            oDate2 
= new Date(aDate[1+ '-' + aDate[2+ '-' + aDate[0])
            iDays 
= parseInt(Math.abs(oDate1 - oDate2) / 1000 / 60 / 60 / 24)  
            
return iDays
        } 

    
</script>

</head>
<body style="font-family:Calibri; font-size:14px;">
    
<form id="form1" runat="server">
    
<div>
    
</div>
    
</form>
    
<p>
        From:
        
<input id="txtfrom" type="text" />(format: 2009-07-12)</p>
    
<p>
        To:
        
<input id="txtto" type="text" /></p>
    
<p>
        
<input id="btnValidate" type="button" value="Validate" onclick="return btnValidate_onclick()" /></p>
</body>
</html>

 

Thanks.

posted @ 2009-03-10 11:42 LanceZhang 阅读(...) 评论(...) 编辑 收藏