javascript regex does not work properly with postal code

Question

'^[AaBbCcEeGgHhJjKkLlMmNnPpRrSsTtVvXxYy]{1}\d{1}[AaBbCcEeFfGgHhJjKkLlMmNnPpRrSsTtVvWwXxYyZz]{1}[ -]*\d{1}[AaBbCcEeFfGgHhJjKkLlMmNnPpRrSsTtVvWwXxYyZz]{1}\d{1}$'

the above regular expression accepts inputs like T3K2H3 or T3K-2H3 from .net form but when i run the validation through the javascript; it does not work.

var rxPostalCode = new RegExp('^[AaBbCcEeGgHhJjKkLlMmNnPpRrSsTtVvXxYy]{1}\d{1}[AaBbCcEeFfGgHhJjKkLlMmNnPpRrSsTtVvWwXxYyZz]{1}[ -]*\d{1}[AaBbCcEeFfGgHhJjKkLlMmNnPpRrSsTtVvWwXxYyZz]{1}\d{1}$');

var postalCode = 't3k2h3';

var matchesPostalCode = rxPostalCode.exec(postalCode);

if (matchesPostalCode == null || postalCode != matchesPostalCode[0]) {

    $scope.AccountInfoForm.PostalCode.$setValidity("pattern", false);

    $scope.showLoading = false;

    return false;
}

according to online regex validator your regex should match, see http://regex101.com/r/zN7iX0 — donfuxx, Mar 30 '14 at 15:07
@donfuxx, I changed my answer to address another problem which I think is the reason — sshashank124, Mar 30 '14 at 15:07

score 0 · Accepted Answer · edited May 23 '17 at 12:05

0

I believe that in javascript, you have to do // instead of ''

as follows:

/^[AaBbCcEeGgHhJjKkLlMmNnPpRrSsTtVvXxYy]{1}\d{1}[AaBbCcEeFfGgHhJjKkLlMmNnPpRrSsTtVvWwXxYyZz]{1}[ -]*\d{1}[AaBbCcEeFfGgHhJjKkLlMmNnPpRrSsTtVvWwXxYyZz]{1}\d{1}$/

You might want to check the following link:

Validate email address in JavaScript?

edited May 23 '17 at 12:05

Community

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answered Mar 30 '14 at 15:00

sshashank124

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This does not respect the classes defined in OP's question – axelduch Mar 30 '14 at 15:02
seems like that is not what is wanted, because seems like letters like `d` `q` etc are not wanted. Also the part: `[ -]` looks like should be optional – donfuxx Mar 30 '14 at 15:03
@donfuxx, Thank you, I will make those changes – sshashank124 Mar 30 '14 at 15:04
Well, `[AaBbCcEeGgHhJjKkLlMmNnPpRrSsTtVvXxYy]` is not the same thing as `[a-zA-Z]` – axelduch Mar 30 '14 at 15:04

score 0 · Answer 2 · answered Mar 30 '14 at 15:17

You have two syntaxes to define a regexp object:

var rxPostalCode = /^[abceghj-np-tvxy]\d[abceghj-np-tv-z][ -]?\d[abceghj-np-tv-z]\d$/i;

or

var rxPostalCode = new RegExp('^[abceghj-np-tvxy]\\d[abceghj-np-tv-z][ -]?\\d[abceghj-np-tv-z]\\d$',  'i');

Note that with the second syntax you need to use double backslashes.

Sparky · Answer 3 · 2014-03-30T15:30:15.250

Try the following pattern:

^[AaBbCcEeGgHhJjKkLlMmNnPpRrSsTtVvXxYy]\d
[AaBbCcEeFfGgHhJjKkLlMmNnPpRrSsTtVvWwXxYyZz][ -]*\d
[AaBbCcEeFfGgHhJjKkLlMmNnPpRrSsTtVvWwXxYyZz]\d

Remove the $ at the end and see if that solves your problem.

I also simplified things a bit, the \d{1} is the same as \d

I would also change the [ -]* to [ -]? unless you want to allow multiple spaces or dashes

I suspect what is happening is that the $ expect the end of the line or string, and JavaScript may not store the VAR properly. See if remove the $ solves it, or possibly keeping the $ and trim() the string.

score 0 · Answer 4 · answered Mar 30 '14 at 15:27

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions

"Do not forget to escape \ itself while using the RegExp("pattern") notation because \ is also an escape character in strings."

var rxPostalCode = new RegExp('^[AaBbCcEeGgHhJjKkLlMmNnPpRrSsTtVvXxYy]{1}\\d{1}[AaBbCcEeFfGgHhJjKkLlMmNnPpRrSsTtVvWwXxYyZz]{1}[ -]*\\d{1}[AaBbCcEeFfGgHhJjKkLlMmNnPpRrSsTtVvWwXxYyZz]{1}\\d{1}$');

That should work, I tested it in Chrome's console.

javascript regex does not work properly with postal code

4 Answers4