gistfile1.js

  validVinExp: function () {
    // WDD 169 007-1J-236589
    // WDB1681331J93895
    return new RegExp('^(wdb|wdd)\\s*[\\d\\s]{6,}-?[\\w\\d]{2}-?[\\d]{5,6}$', 'i');
  },

  evaluateVin: function (value) {
    return this.validVinExp().test(value);
  },

  vinOnChange: function () {
    var vinInput = document.getElementsByName('car[vin]');

    if (vinInput.length > 0) {
      vinInput.on('change', function(e) {
        App.carSelect.evaluateVin(vinInput.value);
      });
    }
  },