iban,issn,isbn validations js

validations.js

var validations = {
  iban : function(str){
    //International Bank Account Number
    if(!str.match(/[A-Z]{2}\d{2} ?[A-Z\d]{4}( ?\d{4}){1,} ?\d{1,4}/)) {
      return false;
    }
  },
  isbn : function(str){
   // implement
  },
  issn : function(str){
   // implement
  }
}