Help needed in email address validation !

Question

Hi all,
I am developing a web page in which there is a text box and a submit buttion. User enters his email id and clicks the button. As soon as the button is clicked, the email- address validation should be done.
some thing like,
only one @ shold be there,
the address should terminate with .net, .com, .org.....
there should not be any special characters like / , ?, < > \ etc..;
It should be in JSP or JAVA Script
Can anyone help me ????
Regards
AShvini

Answer 1

function validateEmail(email) {
    // A very simple email validation checking.
    // you can add more complex email checking if it helps
    var splitted = email.match("^(.+)@(.+)$");
    if(splitted == null) {
        return false;
    if(splitted[1] != null ) {
        var regexp_user=/^\"?[\w-_\.\']*\"?$/;
        if(splitted[1].match(regexp_user) == null) {
                return false;
    if(splitted[2] != null) {
        var regexp_domain=/^[\w-\.]*\.[A-Za-z]{2,4}$/;
        if(splitted[2].match(regexp_domain) == null) {
            var regexp_ip =/^\[\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\]$/;
            if(splitted[2].match(regexp_ip) == null) {
                    return false;
        }// if
        return true;
    return false;
}Here's one in JS. A little bit of modification could make it suited to your requirements!