jsvat

jsvat

Demo and Examples

Check the validity of the format of an EU VAT number. No dependencies.

What is it?

jsvat is a small library to check validity of European (and few non-eu) VAT number. (learn more about VAT) jsvat use 2-step check (see below) and didn't make any request for external resources.

Each country has own regexp for VAT number and different math-logic of number calculating.

Installation

1. Bower

bower i jsvat --save

1. NPM (node.js)

npm i jsvat --save

1. Directly download one of the latest releases:

https://github.com/se-panfilov/jsvat/releases

How does jsvat check the validity?

There is 2-step check:

1. Compare with list of Regexps;

For example regexp for austria is /^(AT)U(\d{8})$/.

Looks like ATU99999999 is valid (it's successfied the regexp), but actually it's should be invalid.

1. Some magic mathematical counting;

Here we make some mathematical calculation (different for each country). After that we may be sure that ATU99999999and for example ATV66889218 isn't valid, but ATU12011204 is valid.

Source of inspiration:

Based on this great work: http://www.braemoor.co.uk/software/vat.shtml

At the moment the code was in public access without any license information.

I'm totally rewrite all the code.

Browsers Supports

... (unknown yet, but modern browsers should support it as well)

List of supported Countries:

• Austria
• Belgium
• Bulgaria
• Switzerland
• Cyprus
• Czech Republic
• Germany
• Denmark
• Greece
• Spain
• Europe
• Finland
• France
• United Kingdom
• Croatia
• Hungary
• Ireland
• Italy
• Latvia
• Lithunia
• Luxembourg
• Malta
• Netherlands
• Norway
• Poland
• Portugal
• Romania
• Russia Federation
• Serbia
• Slovenia
• Slovakia republic
• Sweden

LICENSE

MIT: https://github.com/se-panfilov/jsvat/blob/master/LICENSE