Hello VizHub
This example displays a bold, centered “Hello World!” message on a dark background, showcasing the fundamental capabilities of D3.js and VizHub. The visualization uses D3’s `select` method to target the DOM element with the ID `message` and update its text content. The code imports a custom module, `myMessage.js`, which exports the message string, demonstrating modular JavaScript development. Styling is applied via an external CSS file that imports the Ubuntu font from Google Fonts, sets a dark theme, and centers the large, 12em text.