Validate an email address

Question

Hello
I am using this to validate email addresses and it does not
seem to work:
} else if (!email_txt.length ||
email_txt.indexOf("@") == -1 ||
email_txt.indexOf(".") == -1) {
status_txt.text = "Invalid Email.";
I would, in any case, prefer to use the following server
script for validation purposes:
<%
'Email
re.Pattern = "^\w+@\w+\.\w+"
If Not re.Test(email) Then
errorArray(1) = "red"
ErrorMsg = ErrorMsg &
"<center>Please type in a valid email
address</center>"
end if
%>
If I use this server script, how do I begin to show it in my
movie, please? What Action Script do I use to 'pull it in' from the
server and show it?
Many thanks
Steve

Answer 1

Here's an email validation class I use:
* EmailValidator<br>
* (c) 2006 blurredistinction, LLC<br>
* www.blurredistinction.com
* <p>
* by Dave Mennenoh<br>
* [email protected]
* <p>
* Allows email addresses to be easily checked for validity
using current
verification rules.
* <p>
* Usage: var emv:EmailValidator = new
EmailValidator();<br>
* var valid = emv.validate("[email protected]");
class com.blurredistinction.EmailValidator {
//ranges of valid ASCII values for email addresses
private var validASCII:Array = [[43, 43], [45, 46], [48,
57], [61, 61],
[65, 90], [94, 95], [97, 123], [125, 126]];
function EmailValidator () {}
* Checks an email address for validity.
* @param email Email string to be checked for validity
* @return Boolean - True if valid
public function validate (email:String):Boolean {
//split email into local and domain portions
var localDom:Array = email.split ("@");
//there can be only one @ sign - and there has to be one
//and there must be something before the @
if ((localDom.length != 2) || (localDom[0].length < 1)) {
return false;
//local portion can't start or end with a .
if ((localDom[0].charAt(0) == ".") || (localDom[0].charAt
(localDom[0].length - 1) == ".")) {
return false;
//split the domain portion into domain name and extension
var domExtension:Array = localDom[1].split (".");
//domain must contain at least one .
if(domExtension.length < 2){
return false;
//domain can't start with a .
if(domExtension[0].length == 0){
return false;
//there can be multiple .'s in the domain portion so use the
last item in
the array
//extension length must be between 2 and 4 characters
if (domExtension[domExtension.length - 1].length < 2 ||
domExtension[domExtension.length - 1].length > 4) {
return false;
//finally check the local portion & domain for invalid
chars
if ((!checkString (localDom[0])) || (!checkString
(localDom[1]))) {
return false;
return true;
//------------------------ PRIVATE
* Checks each character in the string to see if it's in the
range of valid
ascii
* @param theString String to be validated
* @return True if each character is in a valid range
private function checkString (theString:String):Boolean {
var sl = theString.length;
var ind:Number;
for (ind = 0; ind < sl; ind++) {
if (!isValidASCII (theString.charCodeAt (ind))) {
return false;
return true;
* See if the input character falls in the valid range of
valid ascii chars
* @param theChar Single character passed in from
checkString()
* @return True if individual char is in a valid range
private function isValidASCII (theChar:Number):Boolean {
var ind:Number;
for (ind = 0; ind < validASCII.length; ind++) {
if ((theChar >= validASCII[ind][0]) && (theChar
<= validASCII[ind][1])) {
return true;
return false;
HTH
Dave -
Head Developer
http://www.blurredistinction.com
Adobe Community Expert
http://www.adobe.com/communities/experts/