D3 join() example

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D3 join() example

✓ Published2🌍 Public

Last edited Mar 3, 2024

Created on Jan 24, 2024

This example demonstrates how D3’s `join()` method synchronizes data with SVG rectangles, showing a bar chart of Nobel Prize winners by country. The code calls `updateBars()` three times—with ten, four, and two data items—to illustrate how the selection automatically handles entering, updating, and exiting elements. Using D3 v7’s `selection.join()`, it replaces the separate `enter()`, `update()`, and `exit()` workflows. Bars are styled via the `.bar` CSS class with a DarkSalmon fill, and the script logs each datum and index to the console.

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D3 join() example

Visit https://github.com/ax-va/Interactive-Data-Visualization-Dale-2023

MIT Licensed

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