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Cheap Tricks for interaction with D3.js

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AAmol Kulkarni
Last edited Jun 23, 2020
Created on Jun 23, 2020

This example shows an interactive world map using D3.js v5 and TopoJSON data from the world-atlas and visionscarto-world-atlas packages. The map renders with a natural Earth projection and SVG paths, letting users pan and zoom via the d3.zoom API. Hovering over a country changes its fill color to red, while country names appear as tooltips via SVG title elements. The code loads geographic and name data concurrently with Promise.all, using d3.json and d3.tsv to build a lookup table.

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