Simple JS regexp for swedish social security number

swedish-social-security-regexp.js

/*NOTE: 
This is just a simple pattern check, so: /^\d{6,8}[-|(\s)]{0,1}\d{4}$/.test("000000 0000") // true

/^\d{6,8}[-|(\s)]{0,1}\d{4}$/.test('195505055555'); // true

/^\d{6,8}[-|(\s)]{0,1}\d{4}$/.test('19550505-5555'); // true

/^\d{6,8}[-|(\s)]{0,1}\d{4}$/.test('550505-5555'); // true

/^\d{6,8}[-|(\s)]{0,1}\d{4}$/.test('550505 5555'); // true

/^\d{6,8}[-|(\s)]{0,1}\d{4}$/.test('5505055555'); // true

*/


//JS
var isSwedishSocialSecurityNumber = function(str) {
   return /^\d{6,8}[-|(\s)]{0,1}\d{4}$/.test(str);
};

//Dojo
(function($) {
    $.mixin($, {
        isSwedishSocialSecurityNumber : function(str) {
            return /^\d{6,8}[-|(\s)]{0,1}\d{4}$/.test(str);
        }
    });
})(dojo);

//dojo.isSwedishSocialSecurityNumber('195505055555');

//jQuery
(function($) {
    $.extend({
        isSwedishSocialSecurityNumber : function(str) {
            return /^\d{6,8}[-|(\s)]{0,1}\d{4}$/.test(str);
        }
    });
})(jQuery);

//jQuery.isSwedishSocialSecurityNumber('195505055555');

Hello to both of you.

I had a problem that 1976010101 gave a false positive, so I made this edit:
/^(19|20)?(\d{6}(-|\s)\d{4}|(?!19|20)\d{10})$/

(According to wikipedia there is no living swede is born in 1800s.)

@Krillko
Thanks for clarification, yes indeed your code is more smart.

I have another improvement to add:
/^(19|20)?(\d{6}([-+]|\s)\d{4}|(?!19|20)\d{10})$/

I added the possibility to use a + instead of - because this can be used for numbers older than 100 years.
Thanks for your previous versions!

I have another improvement to add:
/^(19|20)?(\d{6}([-+]|\s)\d{4}|(?!19|20)\d{10})$/

I added the possibility to use a + instead of - because this can be used for numbers older than 100 years.

Somebody was on Wikipedia before googling :D good job!

I have totally missed all these comments! Fun that an old gist from 2011 (!) was used by someone else than me :)

Don't know if the OP or anyone will read this, but this is my version, and it seems to work!

^(19|20)?\d{2}(01|02|03|04|05|06|07|08|09|10|11|12)((0[1-9])|(1|2)[0-9]|(30|31))-\d{4}$

The problem with the expressions so far, is that they don't validate the date, after the year part. So an SSN like 852240-1010 gives a match, but we all know, nobody can be born in the 22th month, and on the 40th day of the year.

I'm studying to become a web developer in C# .NET, and our assignment was to create an app to calculate the age of a person with a Swedish social security number. I wanted to validate the SSN, so that DateTime objects wouldn't throw an exception.

You can see my solution in my repositories, where I use the above regular expression. I know, it is overly complicated, but I haven't found a way to simplify it, wish I would!

Watch out with the regex above me! It's true that "nobody can be born in the 22th month" but in some edge cases skatteverket uses numbers with these invalid dates