Let's make a face with D3.js!
This example demonstrates fundamental D3.js DOM manipulation by creating an interactive smiley face with moving eyebrows. The face is rendered as SVG elements, and the eyebrows animate using D3’s `transition` and `attrTween` methods. The code leverages `d3.select` and `.append` to build the shape, while a YouTube video embedded in the README explains the process. The visualization uses `d3.v5` and is styled with external CSS, showing how D3 can handle simple, non-data-driven graphics.