JSFiddle - React, Tailwind, and code Playground

by chrisJamesC

HTML

<pre id="graph_csv">
source,target
1,2
1,3
1,4
2,5
2,6
11,22
14,21
3,7
3,8
4,9
4,10
5,11
5,12
5,13
6,14
6,15
7,16
8,17
9,18
10,19
10,20
</pre>

<pre id="nodes_csv">
node_id,node_name
1,Node1
2,Node2
3,Node3
4,Node4
5,Node5
6,Node6
7,Node7
8,Node8
9,Node9
10,Node10
11,Node11
12,Node12
13,Node13
14,Node14
15,Node15
16,Node16
17,Node17
18,Node18
19,Node19
20,Node20
21,Node21
22,Node22
</pre>

CSS

#graph_csv, #nodes_csv {
    display: none;
}

JavaScript

var margin = {top: 40, right: 40, bottom: 40, left: 40}, width = 1024 - margin.left - margin.right, height = 768 - margin.top - margin.bottom;

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

    var svg = d3.select("body").append("svg")
        .attr("width", width + margin.left + margin.right)
        .attr("height", height + margin.top + margin.bottom)
        .append("g")
        .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

    var links = d3.csv.parse(d3.select("#graph_csv").text());
    var nodesByName = {};
    
    links.forEach(function(link) {
        var parent = link.source = nodeByName(link.source),
            child = link.target = nodeByName(link.target);
        if (parent.children) parent.children.push(child);
        else parent.children = [child];
    });

    var nodes = tree.nodes(links[0].source);

    svg.selectAll(".link")
        .data(links)
        .enter().append("line")
        .attr("class", "link")
        .attr("x1", function(d) { return d.source.y; })
        .attr("y1", function(d) { return d.source.x; })
        .attr("x2", function(d) { return d.target.y; })
        .attr("y2", function(d) { return d.target.x; });

    svg.selectAll(".node")
        .data(nodes)
            .enter().append("circle")
       .attr("class", "node")
            .attr("r", 10)
            .attr("cx", function(d) { return d.y; })
            .attr("cy", function(d) { return d.x; });

    var names = d3.csv.parse(d3.select("#nodes_csv").text());
    var namesMap = {};
    names.forEach(function(d) {
        namesMap[d.node_id] = d.node_name;
    });

    svg.selectAll("text")     
            .data(nodes)
       .enter().append("text")
       .attr("class", "label")
       .attr("x",function(d) { return (d.y - 25); })
       .attr("y",function(d) { return (d.x + 20); })
    .text(function(d){ return namesMap[d.name]; });

    function nodeByName(name) {
        return nodesByName[name] ||...