<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<script type="text/javascript">
function IsDate() {
var re = /^(\d{4})(\/|-)(\d{1,2})\2(\d{1,2})$/ ;
var s = document.getElementById('date').value;
var m = re.exec(s);
//if(m == null){
//return false;
//}
var d = new Date(m[1],m[3]-1,m[4]);
if(d.getFullYear()==m[1] && d.getMonth()==(m[3]-1) && d.getDate()==m[4]){
return true;
}else{
alert("The date of format is 'YYYY-MM-DD' !");
return false;
}
}
</script>
<html>
<head>
<title>Chart</title>
</head>
<body>
<form name="form1" method="post" action="showChart.jsp" onSubmit= "return IsDate();">
<p>Date:
<input type="text" id="date" name="date" value=""/> The date of format is 'YYYY-MM-DD', for example : 2012-01-01
</p>
<p>
<input type="Submit" value="Submit" >
</p>
</form>
</body>
</html>