Email address validation using expression

Question

VAL.match(/^[^\\W][a-zA-Z0-9\\_\\-\\.]+([a-zA-Z0-9\\_\\-\\.]+)*\\@[a-zA-Z0-9_]+(\\.[a-zA-Z0-9_]+)*\\.[a-zA-Z]{2,4}$/)

HI Friends, I am using above email address expression to validate email. Problem I am geting is it is not allow ‍‍‍‍‍‍a@a.com emai‍l adddress for testing.

Any one please quide me what need to be change in expression.

Thanks you

Relevant [SO thread](http://stackoverflow.com/questions/201323/using-a-regular-expression-to-validate-an-email-address) — Stphane, Apr 08 '14 at 12:56
Really, you should use a tokenizer and a state machine (or use a library that does it properly) if you're attempting to validate email addresses. They are *much* more complex than a simple regex can handle. — Phylogenesis, Apr 08 '14 at 13:23

score 1 · Answer 1 · answered Apr 08 '14 at 12:51

You can try this function

function isValidEmailAddress(emailAddress) {
            var pattern = new RegExp(/^(("[\w-+\s]+")|([\w-+]+(?:\.[\w-+]+)*)|("[\w-+\s]+")([\w-+]+(?:\.[\w-+]+)*))(@((?:[\w-+]+\.)*\w[\w-+]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$)|(@\[?((25[0-5]\.|2[0-4][\d]\.|1[\d]{2}\.|[\d]{1,2}\.))((25[0-5]|2[0-4][\d]|1[\d]{2}|[\d]{1,2})\.){2}(25[0-5]|2[0-4][\d]|1[\d]{2}|[\d]{1,2})\]?$)/i);
            return pattern.test(emailAddress);
        };

check the value as

if (!isValidEmailAddress(getEmailID)) {
}

score 1 · Answer 2 · edited May 23 '17 at 12:21

1

use this regexp

/^([a-zA-Z0-9_.+-])+\@(([a-zA-Z0-9-])+\.)+([a-zA-Z0-9]{2,4})+$/

see this link: Email validation using jQuery

edited May 23 '17 at 12:21

Community

1
1

answered Apr 08 '14 at 12:53

Baba

852
1
17
31

score 1 · Accepted Answer · edited Apr 25 '14 at 14:04

1

you can use

/^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/

edited Apr 25 '14 at 14:04

Lightness Races in Orbit

378,754
76
643
1,055

answered Apr 08 '14 at 13:05

alvin

28
4

Email address validation using expression

3 Answers3