Validate email address in JavaScript:
                                             This is a script for validate  form box to ensure that the user entered a valid email address. If not, the form submition is canceled, and the surfer prompted to re-enter a valid address.

 This script validate the following assumptions:
  • The mailID should contains a least one character procedding the "@"
  • The mailID should contains a "@" following the procedding character(s)
  • The mailID should contains at least one character following the "@", followed by a dot (.), followed by either a two character or three character string .
Javascript code for validate email address:
    <title>Email Validation</title>
    <script type="text/javascript">
var error;
function isValidEmail(){
var str=document.mailValidation.txtEmail.value
var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
if (filter.test(str)){
alert(str +" is  a valid email address");
alert("Please enter a valid email address!");

return (error)

    <form name="mailValidation">
    Enter Your Email Address:<br />
    <input type="text" size="15" name="txtEmail">
    <input type="submit" value="Submit" onclick="return isValidEmail();">


Enter Your Email Address:


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