Smiley Face
This example displays a simple smiley face rendered as a static graphic, with the face’s features drawn using SVG-style shapes generated by the D3 `arc` function for the smile. The page loads React and ReactDOM from a CDN, and the component `<App />` renders a basic `<h1>Hello JSX</h1>` heading, though the visual result is a plain smiley face appearing on a centered page due to the CSS text alignment. The code uses D3 v6’s `arc` generator to construct the smile curve, while React manages the component structure, and the overall rendering relies on standard HTML and CSS for layout.