This example loads the Iris dataset from a CSV file and displays it as raw JSON text in a `<pre>` element. The visualization uses d3.csvParse to convert the CSV string into an array of objects, then coerces numeric columns to numbers. It demonstrates a state management pattern with d3-selection’s select and join methods, where data is asynchronously fetched and rendered after a loading state. The code shows only text output, not a graphical chart.