Fork of Circles with D3
This example shows a collection of colorful, semi-transparent circles rendered across a light green SVG canvas. The data for each circle—its x and y coordinates, radius, and fill color—is defined in a static array, and the code uses the D3 general update pattern with `.data()` and `.join()` to bind that data to circle elements. D3’s method chaining sets the circle attributes, while the `select` import and `main` export demonstrate a reusable container-based structure for embedding the visualization in different frameworks.