regex to validate emails which allows only these two special symbols .,- before @ symbol

Question

I have used below regex for email validation.

var reg = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;

How can i validate the below two email id like

hello!%#%^world@gmail.com
helloworld@-gmail.com

Vaild Email ids:

hello-world@gmail.com
hello.world@gmail.com

InVaild Email ids:

hello!#%#@gmail.com
helloworld@-gmail.com

Special characters should not be allow before @gmail.com

Below is my JavaScript code

var re = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;

if (!re.test($(this).val())) {
    errmsg.push($(this).attr('placeholder') + ' is invalid');
}

I hope you are also doing server-side validation? Remember JS can be disabled. I assume you have already seen this [thread](http://stackoverflow.com/questions/46155/validate-email-address-in-javascript). — James, Jul 27 '14 at 10:52
Myname.mysurnane+something@gmail.com is a valid gmail address — mplungjan, Jul 27 '14 at 10:53
@AvinashRaj I have updated the question.. let me know if its not clear — Andy Storrisch, Jul 27 '14 at 10:59
@James I have tried 4-5 regex still can't find the one which matches my requirement .. thanks for writing — Andy Storrisch, Jul 27 '14 at 11:01
@mplungjan i'm trying to prevent myname.!$%^&mysurname@gmail.com — Andy Storrisch, Jul 27 '14 at 11:02
http://haacked.com/archive/2007/08/21/i-knew-how-to-validate-an-email-address-until-i.aspx/ — hjpotter92, Jul 27 '14 at 11:04
@AndyStorrisch Which special characters do you wish to exclude before the @? The RFC allows **! \$ & * - = ^ ` | ~ # % ' + / ? _ { }**. Do you have any other differences from the formal requirements for your validation? — Ron Rosenfeld, Jul 27 '14 at 11:12
@RonRosenfeld I wanted to exclude all the special character apart for . and - before @ — Andy Storrisch, Jul 27 '14 at 11:20

score 4 · Accepted Answer · answered Jul 27 '14 at 11:22

4

You could try the below regex to validate emails which allows only these two special symbols .,- before @ symbol.

^[^<>()[\]\\,;:\%#^\s@\"$&!@]+@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z0-9]+\.)+[a-zA-Z]{2,}))$

DEMO

answered Jul 27 '14 at 11:22

Avinash Raj

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regex to validate emails which allows only these two special symbols .,- before @ symbol

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