Programming Support: Validation

Write JavaScript to validate the following fields of the registration page.

Name (Name should contains alphabets and the length should not be less than 6 characters).
Password (Password should not be less than 6 characters length).
Confirm password(Password and confirm password should be same).
E-mail id (should not contain any invalid and must follow the standard pattern name@domain.com).
Phone number (Phone number should contain 10 digits only).
NOTE: Run this page using Internet Explorer.


<!DOCTYPE html>

<html>

<head>

<title>Validation</title>

<script type="text/javascript">

function checkValidation() {
 var name,re_name,pass,cpass,re_pass,mailid,re_mailid,phno,re_phno;
 name=document.reg.uname.value;
 pass=document.reg.pwd.value;
 cpass=document.reg.cpwd.value;
 mailid=document.reg.email.value;
 phno=document.reg.phno.value;
 re_name=new RegExp("^[A-Za-z]+$","g");
 re_pass=new RegExp("^[A-Za-z0-9]+$","g");
 re_mailid=new RegExp("^[A-Za-z0-9]+[.|_]?[A-Za-z0-9]+@{1}[A-Za-z0-9]+.com$","g");
 re_phno=new RegExp("\\d{10}","g");
 if (name.match(re_name) && name.length>=6) {
 if (pass.match(re_pass) && pass.length>=6) {
 if (pass==cpass) { 
 if (mailid.match(re_mailid)) {
 if (phno.match(re_phno) && phno.length==10) {
     window.alert("Enter details are valid.");
 }
 else{
     window.alert("Invalid phone number.");
     document.reg.phno.focus();
 }
 }
 else{
     window.alert("Invalid E-mail ID.");
     document.reg.email.focus();
 }
 }
 else{
     window.alert("Password and Confirm password must be same.");
     document.reg.cpwd.focus();
 }
 }
 else{
     window.alert("Invalid password.");
     document.reg.pwd.focus();
 }
 }
 else{
     window.alert("Invalid user name.");
     document.reg.uname.focus();
 }

}

</script>

</head>

<body>

<form name="reg">

<h1 align="center"> REGISTRATION </h1>

<table align="center" cellspacing="10">

<tr>
 <td>Name</td>
 <td> <input name="uname" type="text"> </td>

</tr>

<tr>
 <td>Password</td>
 <td> <input name="pwd" type="password"> </td>

</tr>

<tr>
 <td>Confirm Password</td>
 <td> <input name="cpwd" type="password"> </td>

</tr>

<tr>
 <td> E-mail ID </td>
 <td> <input name="email" type="text"> </td>

</tr>

<tr>
 <td> Phone Number </td>
 <td> <input name="phno" type="text" maxlength="10"> </td>

</tr>

<tr>
 <td colspan="2" align="center"><input type="button" value="Validate" onclick="checkValidation()">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  <input type="reset" value="Reset"></td>

</tr>

</table>

</form>

</body>

</html>
Pages

Validation
