Validating zip code
Note that many cities from Netherlands may have multiple localities in it, so the clicking on "Show Postal Code" below may only show postal code of central locality.
For specific locality/address, you need to select its name in the above text box.
The code will use a regular expression pattern checker (also known as Reg Ex) to determine if the answer has the appropriate number of digits.
If it doesn't, it will display an error message that says, "Please revise your five-digit Zip Code" and won't allow the respondent to submit the page until it has been corrected.
^ # Assert position at the beginning of the string.
Simply enter one or code or upload a file with multiple codes and select the desired validation.Most checks are pretty straighforward, but there are some additional options that are explained below.