email validation check if it's correct?

xristina · October 14th, 2004, 07:31 AM

Well I have this code :
<html>
<title</title>
<head>
<script Language="JavaScript">
function check_email(check) {
ok = "1234567890qwertyuiop[]asdfghjklzxcvbnm.@-_QWERTYUIOPASDFGHJKLZXCVBNM";

for(i=0; i < e.length ;i++){
if(ok.indexOf(e.charAt )<0){
return (false);
}
}

/*function isEmailAddr(email)
{
  var result = false
  var theStr = new String(email)
  var index = theStr.indexOf("@nackademin.com");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
    result = true;
  }
  return result;
}*/

function FormValidator(theForm)
{

  if (theForm.email.value == "" || ! "@nackademin.com")
  {
    alert("Please enter a valid emailadress in the \"email\" field.");
    theForm.email.focus();
    return (false);
  }

  if (!isEmailAddr(theForm.email.value))
  {
    alert("Please enter a complete email address in the form: [email protected]");
    theForm.email.focus();
    return (false);
  }

  if (theForm.email.value.length < 3)
  {
    alert("Please enter at least 3 characters in the \"email\" field.");
    theForm.email.focus();
    return (false);
  }
  return (true);
}
</script>
</head>
<body>
<form method="POST" action="feedback.html" onsubmit="return FormValidator(this)" id=form4 name=form4>
  <p>Email Address: <input type="text" name="email" size="32"><input type="submit"
  value="Submit" name="submit"></p>
</form>
</body>
</html>

This code has to check if the mail is sent either to www.nackademin.com or to www.lexikon.se and that there is at least one letter before the @ , no numbers! and if there's an @ in the address.
Can someone check this out and tell me what to do?

pgtips · October 14th, 2004, 10:21 AM

Regular Expressions are your best bet here. You can do all those checks in one go. Something like this should do the trick:
^([A-Za-z]+\.+)*[A-Za-z]+@((nackademin.com)|(lexikon.se))$

use code like this to run it:

Code:

if ( /^([A-Za-z]+\.+)*[A-Za-z]+@((nackademin.com)|(lexikon.se))$/.test(theForm.email.value) )
{
    alert("email good);
}
else
{
    alert("email bad");
}

rgds
Phil

xristina · October 14th, 2004, 01:51 PM

Thanxs!!!!!I'll try it later!!!!!!!