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Cheap Tricks for Interaction

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CChip
Last edited Feb 26, 2020
Created on Feb 25, 2020

This example shows a world map rendered with D3.js, using green countries that turn red on hover. The visualization demonstrates fundamental DOM manipulation and event handling through D3’s `select`, `data`, and `enter` methods, while `d3.geoPath` and `d3.geoNaturalEarth1` project the TopoJSON data from the world-atlas dataset. The SVG paths respond directly to CSS `:hover` styling, illustrating how inexpensive interactivity can be achieved with minimal JavaScript.

AI-generated description

Demonstrates fundamental DOM manipulation using D3.js by making a smiley face whose eyebrows move.

MIT Licensed

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