How can I add support for a + (plus sign) in this email validation regex?

Question

This is a regular expression I found online that seems to do a great job at simple email address validation. The problem is it doesn't allow + in the email, like my+email@domain.com. I'm not great at regex, so how can I add support for a + without breaking the whole thing?

var regex = new RegExp( /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i );

See https://stackoverflow.com/q/4736/3001761, https://stackoverflow.com/q/22937618/3001761 — jonrsharpe, Jun 07 '18 at 18:12
I don't think there's any reason to use the `RegExp` constructor if you're using the `/exp/i` literal notation. — , Jun 07 '18 at 18:13
Where do you need to support the + sign in the middle or in the start or at any position ? — mostafa tourad, Jun 07 '18 at 18:15

score 6 · Accepted Answer · answered Jun 07 '18 at 18:13

6

Change the second [\w-]+ to [+\w-]+

answered Jun 07 '18 at 18:13

Michael Ward

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Thank you for the fast reply! You correctly answered my question based on my example. I'll mark as accepted once the time limit is up. One thing I forgot though is that it's valid for the `+` to be the first character also. I also changed the first `[\w-]+` to `[+\w-]+` and that seems to allow `+` as the first character as well. Is that the correct way to do this? – Gavin Jun 07 '18 at 18:22
1

Yep! Good catch too! – Michael Ward Jun 07 '18 at 19:04

score 0 · Answer 2 · answered Sep 30 '21 at 17:37

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([+\w0-9._-]+@[\w0-9._-]+\.[\w0-9_-]+)

answered Sep 30 '21 at 17:37

user2643679

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While this code may answer the question, providing additional context regarding how and/or why it solves the problem would improve the answer's long-term value. You can find more information on how to write good answers in the help center: https://stackoverflow.com/help/how-to-answer . Good luck – nima Oct 01 '21 at 06:55

How can I add support for a + (plus sign) in this email validation regex?

2 Answers2