EMAIL ID valaidation code in jsp

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how do i add email id validation code in this jsp page help me

how to add email id validation in between email code??

JavaScript

<script>
            function validate(){
                var username=document.form.ContactUserName.value;
                var email=document.form.ContactEmail.value;
                var passwd=document.form.ContactMessage.value;
                if(username==""){
                    alert("Enter Your Name!");
                    return false;
                }
                if(email==""){
                    alert("Enter Your E-Mail ID!");
                    return false;
                }
                if(passwd==""){
                    alert("Enter Your Message!");
                    return false;
                }
                if(passwd.toString().length > 1000){
                    alert("Your message contains more than 1000 chararacters.");
                    return false;
                }
                return true;
            }

Posted 8-May-13 2:10am

shahdarshak

Updated 8-May-13 2:25am

vijay__p

v3

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max_nowak 8-May-13 8:24am

Is your question, how to validate your email address, whether it has the right format?

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KM Perumal · Answer 1 · 2013-05-08T02:38:00

Simple validation

JavaScript

<script language = "Javascript">

function emailcheck(str) {

    var at="@"
    var dot="."
    var lat=str.indexOf(at)
    var lstr=str.length
    var ldot=str.indexOf(dot)
    if (str.indexOf(at)==-1){
        alert("Invalid E-mail ID")

    return false
}eles
 return true
}

Balasubramanian T · Answer 2 · 2013-05-08T22:16:00

Try this...Dude

function validation()
{
var mail=document.getElementById('txt_email').value;
var mail_pattern=/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;

if(mail=='')
{
document.getElementById('mesg_mail').innerHTML='Enter Your E-MailID';
return false;
}
else if(mail_pattern.test(mail)==false)
{
document.getElementById('mesg_mail').innerHTML='Enter a Valid E-Mail Id';
return false;
}
else
{
document.getElementById('mesg_mail').innerHTML='';
}
}

EMAIL ID valaidation code in jsp

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