more valid email address characters - (jfinlayson)

Tue, 25 Nov 2008 22:45:03 GMT

StrObj.match(/([a-zA-Z0-9._-]+@[a-zA-Z0-9._-]+\.[a-zA-Z0-9._-]+)/gi);

Technically, there are several more valid characters that should included in this regular expression.

According to RFC 2822 (URL below), all of the following US-ASCII characters are valid in the local part (before the "@") of an email address:

A-Z
a-z
0-9
!#$%&'*+-/=?^_`{|}~

All of those except the dot character (.) are valid anywhere in the email address. The dot character may not appear as the first or last character in the local-part or domain.

http://www.faqs.org/rfcs/rfc2822.html
See section 3.4.1. for the definition of "addr-spec", and section 3.2.4 for the definition of "atext".

At the very least, I think the plus symbol (+) should be included. It is used by popular mail services (including GMail and FastMail) to support customized email addresses.

The JavaScript Source: Forms: Extract Email Addresses

more valid email address characters - (jfinlayson)