Regular Expression not validating the complete email address

Question

I've following regular expression: ([A-Za-z0-9.-])\@([a-zA-Z0-9-]{1,63})(.([A-Za-z]{2,6})) and validate [email protected] and test@gamil as well. While it must validate [email protected] and the email with the sub-domain.

Any help is there to make me correct.

I would have a go at an already existing email regex script, like [here](http://stackoverflow.com/questions/201323/using-a-regular-expression-to-validate-an-email-address). This is a complicated solution, and writing a custom one may leave some email addresses out that are valid. — , Mar 29 '15 at 04:42
Can you please check your regular expression? It looks to me like you are missing a + before \@. Also, did you mean to escape the .? If you don't, the . will match any character, and that may be your problem. (But I agree with Danbopes' comment: don't roll your own email regular expression.) — , Mar 29 '15 at 04:44

score 0 · Answer 1 · answered Mar 29 '15 at 07:37

Try this:

  /^([A-Za-z0-9.-])+\@([a-zA-Z0-9-]{1,63})(\.([A-Za-z]{2,6}))$/

1) The first ^ and last $ ensure that the whole string is matched

2) You neet a + before the \@ to match the whole name, not just its last character

3) while you do not require a \ before the @ character you DO need one before the .

But as mentioned in the comments you would be better served finding a pre-built one on the web.

Mohamed Shaaban · Answer 2 · 2015-03-31T11:09:47.020

0

You tried to match only one character before @ sign, but you need to ensure that there is at least one character

([A-Za-z0-9.-])+
You missed to escape the . character at the final part of email (.com, .net, .xyz), also add the + modifier to accept both domains and sub-domains

(.([A-Za-z]{2,6}))+

Finally, it should be something like this

([A-Za-z0-9.-])+\@([a-zA-Z0-9-]{1,63})(\.([A-Za-z]{2,6}))+

See updated regex

edited Mar 31 '15 at 11:09

answered Mar 29 '15 at 07:51

Mohamed Shaaban

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I don't want the regular expression return true for test@gmail also I want [email protected] and [email protected] must also be validated by the regular repression. – user2384794 Mar 31 '15 at 10:40
It should now neglects `test@gmail` and accepts `[email protected]` and `[email protected]` – Mohamed Shaaban Mar 31 '15 at 11:10

score 0 · Answer 3 · answered Mar 31 '15 at 10:55

I done with this. here in the following is the regular expression.

([A-Za-z0-9.-])*\@([a-zA-Z0-9-]{1,63})(([\.\-]?[a-zA-Z0-9]+)*)\.([A-Za-z]{2,6})

It validates the following kinda email address:

[email protected]
[email protected]
[email protected]
[email protected]
[email protected]

Thank You all for your kinda help.

Regular Expression not validating the complete email address

3 Answers3