This example fetches live data from the RDW Open Data API using the `fetch` function, starting with the endpoint `https://opendata.rdw.nl/resource/t5pc-eb34.json`. It retrieves the JSON response, logs the full dataset and the first record, and then applies a custom `filterData` function to extract all values for the `areaid` column. The code also defines a `listUnique` function to identify unique values in an array, though it is not called in the visible flow. The page itself is minimal, with no visual output—only console logging and basic HTML/CSS styling.