我们可以利用ASP 3.0里的On Error Resume Next来完成这项功能：
<%
Option Explicit
Dim strDate
' 记录输入的日期,字符型
Dim datDate
' 测试输入的日期是否正确,日期型
<html>
%>
<head>
<title>精彩春风之日期验证</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<link rel="stylesheet" href="../Css/export.css" type="text/css">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<Form name="InputDate" ACTION="<% = Request.ServerVariables("SCRIPT_NAME") %>" METHOD="POST">
<table width="500" border="1" cellpadding="0" cellspacing="0" align="center">
<tr>
<td background="../Pic/br.jpg">
<table width="500" border="0" cellpadding="4" cellspacing="4" class="9p">
<tr>
<td colspan="2"> </td>
</tr>
<tr>
<td colspan="2" height="60">
<div align="center">请输入所要查询的日期:
<input type="text" name="strDate" value="<% = Cstr(Year(Now())) & "-" & Cstr(Month(Now()))
& "-" & Cstr(Day(Now()))%>" size="10" maxlength="10">
</div>
</td>
</tr>
<tr>
<td width="50%">
<div align="center">
<input type="submit" name="Submit" value="确认">
</div>
</td>
<td>
<div align="center">
<input type="reset" name="Submit2" value="取消">
</div>
</td>
</tr>
</table>
</td>
</tr>
</table>
</Form>
<%
strDate = Request.Form("strDate")
If strDate <> "" Then
On Error Resume Next
datDate = CDate(strDate)
If Err.Number = 0 Then
%>
<Script Language="JavaScript">
<!--
InputDate.action="TypeAlert.asp"
InputDate.submit()
//-->
</Script>
<%
Else
%>
<Script Language="JavaScript">
<!--
alert ("噢,您输入的日期错啦,请重新输入!")
//-->
</Script>
<%
End If
End If
%>
</body>
</html>
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