{"version":"1.0","type":"rich","title":"Using Classes","description":"This example demonstrates D3.js's class-based selection methods for updating SVG elements. A set of red circles appears at different x-axis positions over four sequential render calls, showing how enter, merge, and exit operations manage the growing and shrinking dataset. The code uses `selectAll(\".point\")` with the `.enter()`, `.merge()`, and `.exit()` API to incrementally add and remove circle elements, maintaining consistent styling through CSS classes.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/50c15ee6fa9f4a6b9b693794ff2ca65c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}