这个代码没什么，贴上来，我想表达的重点隐藏在代码中，找找看！
复制代码 代码如下:
<!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>
<title>show date</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
name="mark";
function showLastDate()
{
alert(name);
var reg=/^d{4}/d{1,2}/d{1,2}$/;
var inputdate=$("#indate").val();
if(!reg.test(inputdate))
{
alert("please input date like:2013/1/14");
return;
}
var month=parseInt(inputdate.split("/")[1]);
if(month>12||month==0)
{
alert("please input month range from 1-12");
return;
}
var showdate=getLastDate(inputdate);
$("#lastdate").val(showdate);
}
function getLastDate(indate)
{
alert(name);
var year=parseInt(indate.split("/")[0]);
var month=parseInt(indate.split("/")[1]);
//run nian
var isrun=false;
if((year%4==0 && year%100!=0)|| year%400==0)
isrun=true;
switch(month)
{
case 2:
if(isrun)
{return 29;}
else
{return 28;}
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
return 31;
default:
return 30;
}
}
</script>
</head>
<body style="margin-left:100px;margin-top:20px;">
<br><br>
input date:<input id="indate" type="text" />example:2013/1/14<br><br>
<input type="button" onclick="showLastDate()" value="Get Last Date"/><br><br>
input date:<input id="lastdate" type="text" /><br>
</body>
</html>
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