How to validate email in JS?

Question

I need to validate this email using JS, I need to check for the @sign and a period. This is what I have now, but if I run all my code it doesn't not validate the @ sign.

if(email.value == "" || !isNaN(email.value) ) {
var re = /^(([^<>()[\]\.,;:\s@\"]+(\.[^<>()[\]\.,;:\s@\"]+)*)|(\".+\"))@(([^<>()[\]\.,;:\s@\"]+\.)+[^<>()[\]\.,;:\s@\"]{2,})$/i;
        //something is wrong.
       isValid = false;
       txtFeedback.innerHTML += "<p>Please enter a valid email address.</p>";
        email.nextElementSibling.innerHTML = "Please enter a email address.";
   }

view this one http://stackoverflow.com/questions/46155/validate-email-address-in-javascript — VahagnNikoghosian, Dec 03 '15 at 21:30
http://davidcel.is/blog/2012/09/06/stop-validating-email-addresses-with-regex/ — Bergi, Dec 03 '15 at 22:15

Nick Zuber · Answer 1 · 2015-12-04T21:53:06.363

0

Consider this regex

var regex = /^([\w-+]+(?:\.[\w-+]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,14}(?:\.[a-z]{2})?)$/i;
regex.test(email); // true if valid email

edited Dec 04 '15 at 21:53

answered Dec 03 '15 at 21:22

Nick Zuber

5,467
3
24
48

1

Fails on valid e-mail addresses (for TLD's that have more than 6 characters). – robertklep Dec 03 '15 at 22:01
Could you provide me with the sample that failed? – Nick Zuber Dec 03 '15 at 23:14
[`registrars@nic.amsterdam`](http://nic.amsterdam/#newsletter). Also any address with a `+` in the name (which is also valid). – robertklep Dec 04 '15 at 08:36
@robertklep I updated the regex; how about now? – Nick Zuber Dec 04 '15 at 21:53
Nope, it won't accept `{}` in the name, which is also valid. And `"hello world"@some.domain` is also valid ([check](http://sphinx.mythic-beasts.com/~pdw/cgi-bin/emailvalidate)). E-mail address validation is _not_ trivial. – robertklep Dec 05 '15 at 09:28

How to validate email in JS?

1 Answers1