This example demonstrates the basic structure of an HTML page that loads the D3.js library and a separate JavaScript file via script tags. It displays the static text “Hello HTML” in the browser body, while the console logs “Hello JavaScript” upon page load, showing how external scripts execute. The code relies on the D3 v6 API through a CDN link, alongside standard HTML and CSS. It serves as a minimal starting point for integrating D3 with vanilla JavaScript, with no data or visualization yet.