A D3.js v5 example demonstrates how to create and update a row of fruit circles in an SVG, transforming them into a smiley face whose eyebrows move. It shows the data join pattern by entering, updating, and exiting circles. The code imports `select`, `range`, and `scaleOrdinal` from D3, using ordinal scales to map fruit types to colors and radii. Over timed `setTimeout` calls, it removes a fruit and changes one apple to a lemon, re-rendering the visualization each time.