Advanced Search

Return to Snippet

Revision: 12590
at March 19, 2009 22:57 by abwaters
Initial Code 
if (indexisbn.indexOf("978") == 0) {
   isbn = isbn.substr(3,9);
   var xsum = 0;
   var add = 0;
   var i = 0;
   for (i = 0; i < 9; i++) {
        add = isbn.substr(i,1);
        xsum += (10 - i) * add;
   }
   xsum %= 11;
   xsum = 11 - xsum;
   if (xsum == 10) { xsum = "X"; }
   if (xsum == 11) { xsum = "0"; }
   isbn += xsum;
}
Initial URL 
http://www.eblong.com/zarf/bookscan/index.html#convert
Initial Description 









Initial Title





Convert UPC to ISBN









Initial Tags














Initial Language





JavaScript