Validate credit card expiration with moment.js

gistfile1.txt

// this code assumes a credit card is valid in the current month
var validateDate = function () {
  var creditCardDate = moment($scope.data.expirationYear+$scope.data.expirationMonth, "YYMM");
  var today = moment();

  return creditCardDate.isValid() && (today < creditCardDate.add(1, 'months'));
}