The example displays a simple smiley face rendered as an SVG graphic. The visualization is built using D3.js, which selects an SVG container and draws the face's circular outline, eyes, and curved mouth path. The code creates the smiley using D3's shape primitives and attribute setters, with no external data source—the geometry is defined directly in the script. The page contains minimal HTML scaffolding, and the visualization runs immediately on load, demonstrating basic SVG construction through D3's declarative API.