JSFiddle - React, Tailwind, and code Playground

by Guill84

HTML

<script src="//d3js.org/d3.v4.min.js"></script>
<script src="//d3js.org/d3-tile.v0.0.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<!DOCTYPE html>
<meta charset="utf-8">
<svg></svg>

CSS

body {
  margin: 0;
}

path {
  fill: none;
  stroke: red;
  stroke-linejoin: round;
}

JavaScript

var pi = Math.PI,
    tau = 2 * pi;

var width = Math.max(960, window.innerWidth),
    height = Math.max(500, window.innerHeight),
    active = d3.select(null);

// Initialize the projection to fit the world in a 1×1 square centered at the origin.
var projection = d3.geoMercator()
    .scale(1 / tau)
    .translate([0, 0]);

var path = d3.geoPath()
    .projection(projection);

var tile = d3.tile()
    .size([width, height]);

var zoom = d3.zoom()
    .scaleExtent([1 << 11, 1 << 14])
    .on("zoom", zoomed)
    

var svg = d3.select("svg")
    .attr("width", width)
    .attr("height", height)
	.on("mousemove", mousemoved);
  
var raster = svg.append("g");

var vector = svg.append("g").attr("id", "vector");

function mousemoved() {
  //console.log(formatLocation(projection.invert(d3.mouse(this)), d3.zoomTransform(this).k));
}

function formatLocation(p, k) {
  var format = d3.format("." + Math.floor(Math.log(k) / 2 - 2) + "f");
  return (p[1] < 0 ? format(-p[1]) + "°S" : format(p[1]) + "°N") + " "
       + (p[0] < 0 ? format(-p[0]) + "°W" : format(p[0]) + "°E");
}

var country_labels = svg.append("g").attr("id", "country_labels");	


d3.json("https://mbostock.github.io/d3/talk/20111018/world-countries.json", function(collection) {

  vector.selectAll("path") 
      .data(collection.features)
      .enter().append("path")
      .style("fill", "white")
      .style("fill-opacity", 0.5)
      .attr("d", path).on("click", clicked);
      
      country_labels.selectAll("text")
	.data(collection.features)
	.enter().append("text")
	.attr("x", function(d){return path.centroid(d)[0];})
	.attr("y", function(d){return path.centroid(d)[1];})
	.attr("dx", -40)
	.text(function(d){console.log(d);return d.properties.name})
	.style("fill", "#aeaeaf")	
	.style("font-size", "15px")

  // Compute the projected initial center.
  var center = projection([-98.5, 39.5]);

  // Apply a zoom transform equivalent to projection.{scale,translate,center}.
  svg
      .call(zoom)
     ...