This example shows a smiley face rendered with SVG, featuring a yellow circle head, black stroke outline, two eyes, and a curved mouth. The code uses React components to structure the SVG elements and D3’s `arc` API to generate the mouth path. Positioning uses fixed pixel coordinates for the face center, eyes, and mouth radius. The rendering approach leverages ReactDOM to mount the SVG into the DOM, with the mouth drawn via D3’s arc generator using specified start and end angles.