This example shows a static, hand-coded SVG smiley face, with a yellow circle head, two dark eye circles, and a thick black stroke, while a React app renders only a placeholder "hello JSX" heading. The SVG markup is embedded directly in the HTML body, using fixed coordinates and dimensions (960x500), and the circle positions are manually set. The code imports React and ReactDOM from UMD builds, logs ReactDOM to the console, and mounts a basic functional component into a root div, but the visual result is entirely independent of the React logic.