Open GoogleCodeExporter opened 9 years ago
There is no equivalent for that ISBN-13. Because of an expected shortage in certain ISBN categories, the International Organization for Standardization (ISO) decided to migrate to a thirteen-digit ISBN (ISBN-13). This pool is bigger. You would only ever need to 'upgrade' an ISBN-10 to the new ISBN-13 format. Why do you want to create an ISBN-10?
9790230367080 is NOT an ISBN-13
It's an ISMN or International Standard Music Number. ISBNs are for "books". As of 9/11/18, the only 979 prefixes released are 979-10, 979-11, and 979-12.
And to reiterate what GitBruno said, 979 numbers cannot be converted to ISBN-10. Because ALL ISBN-10 numbers are 978s without the prefix and corrected check digit.
That being said, 9790230367080 returns 'undefined' because 979-0 is not defined in the data as a group prefix. You could add that yourself if you know the correct ranges.
The ISBN-13 is not within the range issued by the agency. Adding this yourself would be pointless. Returning undefined
is completely valid.
As @maschyth has outlined the ISBN-13 is in the ISMN range and therefore not a valid ISBN.
Therefore, I think we can close this issue?
It’s all about the data. If the OP were to add ISMN ranges to the dataset, then the code would validate those as well.
https://www.ismn-international.org/ranges.html
But as we both stated, 979 numbers can’t be converted to 10 digits.
No need to add the data, just do this 👍
function forceValidate( ISBN ) {
return true;
};
“The red zone has always been for loading and unloading of passengers. There's never stopping in a white zone.”
Listen Bruno, don’t start up with your white zone shit again. :)
Original issue reported on code.google.com by
anas...@gmail.com
on 30 Oct 2014 at 7:06