EXP-02
☛ Client - Side validation of Registration Page
registrationJS.html
<html>
<head>
<title> Welcome to NNRG e-Book's website</title>
<script language="javascript">
function validate() {
// username validation
var uname = f1.username.value;
if (uname.length<=0)
{
alert("Please Enter UserName");
f1.username.focus();
return false;
}
if (uname.length < 8)
{
alert("Please enter UserName not less than 8");
f1.username.focus();
return false;
}
//password validation
var pwd = f1.password.value;
if (pwd.length<=0)
{
alert("Please Enter password");
f1.password.focus();
return false;
}
if (pwd.length < 6)
{
alert("Please enter Password not less than 6");
f1.password.focus();
return false;
}
// email validation
var email = f1.email.value;
if (email.length<=0)
{
alert("Please Enter email");
f1.email.focus();
return false;
}
else {
let eflag=false;
for(i=0;i<email.length;i++) {
if(email.charAt(i)=="@")
{
eflag=true;
}
}
if(!(eflag))
{
alert("Please enter a valid Email ID");
f1.email.focus();
return false;
}
}
// phone number validation
var phno = f1.phno.value;
if (phno.length<=0)
{
alert("Please Enter Phone Number");
f1.phno.focus();
return false;
}
if (isNaN(phno))
{
alert("Please Enter Valid Phone Number");
f1.phno.focus();
return false;
}
if (phno.length != 10)
{
alert("Please Enter Valid Phone Number");
f1.phno.focus();
return false;
}
// gender validation
let flag=false;
for(i=0;i<f1.gen.length;i++)
if(f1.gen[i].checked)
flag=true;
if(!(flag))
{
alert("Please choose a Gender");
return false;
}
// Language validation
flag=false;
for(i=0;i<f1.lang.length;i++)
if(f1.lang[i].checked)
flag=true;
if(!(flag))
{
alert("Please select at least one of the Language options.");
return false;
}
// address validation
var addr = f1.address.value;
if (addr.length<=0)
{
alert("Please Enter address");
f1.address.focus();
return false;
}
// to display Success message
alert("Registration Successful");
}
</script>
</head>
<body>
<center><br>
<h3>Registration Form </h3>
<br/>
<form name="f1">
<table cellpadding="1" align="center" >
<tr><td> User Name:*</td>
<td><input type="text" name="username"></td></tr>
<tr><td>Password:*</td>
<td><input type="password" name="password"></td></tr>
<tr><td>Email ID:*</td>
<td><input type="text" name="email"></td></tr>
<tr><td>Phone Number:*</td>
<td><input type="text" name="phno"></td></tr>
<tr><td valign="top">Gender:*</td>
<td><input type="radio" name="gen" value="Male">Male
<input type="radio" name="gen" value="Female">Female</td></tr>
<tr> <td valign="top">Language Known:*</td>
<td> <input type="checkbox" name="lang" value="English">English<br/>
<input type="checkbox" name="lang" value="Telugu">Telugu<br>
<input type="checkbox" name="lang" value="Hindi">Hindi<br>
<input type="checkbox" name="lang" value="Tamil">Tamil
</td></tr>
<tr> <td valign="top">Address:*</td>
<td><textarea name="address"></textarea></td>
<tr><td></td><td><input type="button" value="SUBMIT" hspace="10" onclick="validate()">
<input type="reset" value="RESET"></td></tr>
<tr> <td colspan=2 >*<font color="#FF0000">fields are mandatory</font>
</td>
</tr>
</table>
</form>
</center>
</body>
</html>
Output :
