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Regular Expression Details

Title Test Find ISBN 10 or 13
Expression
^(97(8|9))?\d{9}(\d|X)$
Description
Validates both ISBN 10 and ISBN 13 numbers, and confirms ISBN 13 numbers start with only 978 or 979.
Matches
0672317249 | 9780672317248
Non-Matches
0-672-31724-9 | 5555555555555
Author Rating: The rating for this expression. Michael Fienen
Source
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Existing User Comments

Title: overstating the case
Name: Anonymous Coward
Date: 3/2/2011 3:58:42 PM
Comment:
Saying this RE validates the ISBN overstates the case. "Validation" refers to making sure the check digit is correct. All this does is make sure there are 13 digits, and if 13, it starts with 978 or 979.


Title: overstating the case
Name: Anonymous Coward
Date: 3/2/2011 3:58:25 PM
Comment:
Saying this RE validates the ISBN overstates the case. "Validation" refers to making sure the check digit is correct. All this does is make sure there are 13 digits, and if 13, it starts with 978 or 979.


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