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Form validation using jsp and AJAX

Manas Saxena
Ranch Hand

Joined: Mar 01, 2013
Posts: 38
I am trying to validate a form using ajax.My code (which i am putting below) works for email id validation however i am not able to get it work for confirming password.Please help.Heres the code

reginfo.jsp
<%@ 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">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
<link rel="stylesheet" type="text/css" href="template1.css">
</head>
<script type="text/javascript">
function xmlhttpPost(strURL)
{
var xmlHttpReq = false;
var self = this;

// Mozilla/Safari
if (window.XMLHttpRequest)
{
self.xmlHttpReq = new XMLHttpRequest();
}
// IE
else if (window.ActiveXObject)
{
self.xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
}
self.xmlHttpReq.open('POST', strURL, true);
self.xmlHttpReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
self.xmlHttpReq.onreadystatechange = function()
{
if (self.xmlHttpReq.readyState == 4)
{
updatepage(self.xmlHttpReq.responseText);
}
}

self.xmlHttpReq.send(getquerystring());

}


function getquerystring()
{
var word = document.getElementById("email_id").value;
var word1 = document.getElementById("password").value;
var word2 = document.getElementById("confirm_password").value;
alert(word);
alert(word1);
alert(word2);
word = 'w='+ escape(word);
word1 = 'w1='+ escape(word1);
word2 = 'w2='+ escape(word2); // NOTE: no '?' before querystring
return word;
return word1;
return word2;
}


function updatepage(str)
{
document.getElementById("result").innerHTML = str;
document.getElementById("password_result").innerHTML = str;
}

</script>
<body>

<div class="header">
<div class="top_info">


</div>
<div class="logo">

<h1><a href="#" title="Centralized Internet Services"><span class="dark">SITE</span>
LOGO</a></h1>
</div>
</div>
<div class="bar">
<ul>
<li class="browse_category">Welcome to SITE NAME</li>


</ul>
</div>
<div class="reg_center">
<h3>REGISTRATION</h3><br/>
<form name="reg" method="post" >
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="10" FRAME="box">
<TR>
<TD><font face="Chiller" size="5"><b>First Name:</b> <input type="text" size="35" name="first_name"></font></TD>

<TD><font face="Chiller" size="5"> <b>LastName:</b> <input type="text" size="35" name="last_name"></font></TD>

</TR>
<tr></tr>
<TR>
<TD><font face="Chiller" size="5"><b>Gender:</b></font> <input type="radio" size="35" name="gender">Male
<font face="Chiller" size="5"><input type="radio" size="35" name="gender">Female </font>
</TR>
<TR>
<TD><font face="Chiller" size="5"><b>BirthDate:</b> <input type="text" size="35" name="date_of_birth"></font></TD>
</TR>

<TR><TD><font face="Chiller" size="5"><b> (mm/dd/yyyy)</b></font></TD></TR>


<TR>
<TD><font face="Chiller" size="5"><b>Email id:</b> <input type="text" size="34" name="email_id" id="email_id"><div id="result"></TD>
</TR>


<TR>
<TD><font face="Chiller" size="5"><b>Password:</b> <input type="password" size="34" name="password" id="password"><div id="password_result"></TD>
<TD><font face="Chiller" size="5"><b>Confirm Password:</b><input type="password" size="35" name="confirm_password" id="confirm_password"></TD>
</TR>
<tr></tr>
<tr>
<td colspan="2">
<font face="Chiller" size="5"><center><input type="button" value="Register" onclick='JavaScript:xmlhttpPost("regajax.jsp")'></center>
</td>
</tr>
</table>

</form>

</div>

<div class="footer">

</div>
</div>

</body>
</html>




regajax.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
<style type="text/css">
#header{
color:red;

}
</style>
</head>
<body>
<%
String w = request.getParameter("w");
String w1 = request.getParameter("w1");
String w2 = request.getParameter("w2");

String msg =w;
String ter="Invalid email id";
String ter1="Password don't match";
%>
<%=w1%>
<%=w2%>
<%
int atpos=w.indexOf("@");
int dotpos=w.lastIndexOf(".");
if (atpos<1 || dotpos<atpos+2 || dotpos+2>=w.length())
{%>
<%=ter%>
<%
}
if (w1!=w2)
{%>
<%=ter1%>
<%
} %>

</body>
</html>
Bear Bibeault
Author and ninkuma
Marshal

Joined: Jan 10, 2002
Posts: 61315
    
  66

Please be sure to use code tags when posting code to the forums. Unformatted or unindented code is extremely hard to read and many people that might be able to help you will just move along to posts that are easier to read. Please click this link ⇒ UseCodeTags ⇐ for more information. Properly indented and formatted code greatly increases the probability that your question will get quicker, better answers.

I would have gone ahead and added the code tags for you, but the code is unindented, so it would not help much. Please re-post the code using code tags and proper indentation.


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