A smiling face built from SVG shapes animates through D3.js v5, using circles for the eyes and face, rectangles for eyebrows, and a path with the d3.arc generator for the mouth. The code demonstrates SVG element construction, attribute binding, and a chained transition that moves the eyebrows up and down over two seconds. A decorative bindhi path and sparkle circle add detail, with all elements grouped and translated relative to the SVG canvas center.