D3 Join Exploration Module

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D3 Join Exploration Module

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Last edited Sep 14, 2025

Created on Sep 14, 2025

This example demonstrates D3’s data join pattern for dynamically updating SVG circles. An animated sine wave controls the number, position, and radius of circles, which are re-bound to the DOM every frame. The module uses `d3.selectAll` with the `.data()` and `.join()` methods to enter, update, and exit elements seamlessly. It also relies on `d3.range` to generate data, and runs via a `setInterval` loop at 60fps.

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MIT Licensed

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