This example demonstrates a mix of inline JavaScript expressions and React-rendered SVG, displaying both text values and a series of circles. The code uses React 16.10 to map over hardcoded arrays, calculating squared values with a custom `sq` function and rendering magenta circles positioned by array elements. A separate `Test` component defines green circles but remains unused. The SVG output appears in a light-green page background, showcasing how JavaScript logic integrates directly into JSX.