How to automatically apply ISBN hyphenation?

Question

I\'ve got ISBN numbers (10-digits and 13 digits) without the dashes. Now I\'m looking for a way to add those dashes automatically.

I found some useful information here:

Answer 1

I wrote the following JavaScript function to hyphenate ISBNs (I know there is also isbnjs, but this is more compact and easier to include in other projects I think).

https://gist.github.com/aurimasv/6693537