Valid e mail address on forms

adalt posted this at 19:14 — 17th January 2001.

They have: 72 posts

Joined: Dec 2000

What do I need to add to a form to make sure that the person filling it out entered a valid e mail address ??

Thanks

Tony

Justin S posted this at 22:55 — 17th January 2001.

They have: 2,076 posts

Joined: Jun 1999

Moving to the HTML & JavaScript Help Forum...

KLWong posted this at 23:07 — 17th January 2001.

They have: 135 posts

Joined: Apr 2000

Here's the Javascript I use, picked up from somewhere on the web

var re = /^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/;
		
if (re.test(EmailAddr) == false) {
   alert("Not a valid e-mail address");
   return false;
} else {
   return true;
}

Basically it compares the given email address to a "regular expression" which requires something with letters and/or digits followed by a @ and something else with letters and/or digits which contains at least one period.

Of course, this only tests the format, and someone could still enter a non-existent address...

Kristen

http://www.RewardsLookup.com and
http://www.cancerdrugfeedback.net still under early development
Personal page:http://www.isd.net/kwong/kristen.html

Bimjo posted this at 16:26 — 18th January 2001.

They have: 81 posts

Joined: Feb 2000

For a low tech approach- if you have autoresponder capability for your site you can have your form send an autoresponse to the email addy provided.

If it bounces, it wasn't a good one.

My forms pages explain that if they want a response from me they have to provide a valid email addy. My forms forward my visitors to a "Thank You" page that informs them that they should get the autoresponder message, and what the probable reason for not getting one is.

I figure if they aren't serious enough to provide a valid email addy, I don't need to worry about them not hearing from me.

Bimjo
Just my opinion, worth $0.00001 anywhere on earth.
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