hello html
This example uses React and D3 v7 to render an SVG smiley face, built entirely from primitive geometric shapes. The violet background circle, eyes, and mouth are positioned relative to the center of the viewport. The smile is generated using D3’s `arc()` function with defined inner and outer radii and start and end angles, while the eyes are simple circles with offsets. The code demonstrates a hybrid approach, combining React’s declarative component structure for the SVG elements with D3’s utility functions for arc path generation.