This example uses D3.js to construct a smiley face from basic SVG shapes, including circles for the eyes, rectangles for the eyebrows, and arc-generated paths for the mouth and nose. The code demonstrates fundamental DOM manipulation by selecting an SVG element and appending grouped elements with explicit coordinate transforms. Animated behavior is implemented through chained `transition` calls, moving the eyebrow group upward and back down over two one-second intervals. The visualization relies on D3’s `select`, `arc`, and transition APIs to show how static shape creation and simple attribute animation work together.