JSFiddle - React, Tailwind, and code Playground

by Mayur Chavda

HTML

<script src="http://d3js.org/d3.v3.min.js"></script>

CSS

.node {
    cursor: pointer;
}
.node circle {
    fill: #fff;
    stroke: steelblue;
    stroke-width: 1.5px;
}
.node text {
    font: 10px sans-serif;
}
.link {
    fill: none;
    stroke: #ccc;
    stroke-width: 1.5px;
}

JavaScript

var margin = {
    top: 20,
    right: 120,
    bottom: 20,
    left: 120
},
width = 960 - margin.right - margin.left,
    height = 800 - margin.top - margin.bottom;

var i = 0,
    duration = 750,
    root;

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

var diagonal = d3.svg.diagonal()
    .projection(function (d) {
    return [d.y, d.x];
});

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

d3.json("flare.json", function (error, flare) {
    //d3.json("data.json", function(error, flare) {
    root = flare;
    root.x0 = height / 2;
    root.y0 = 0;

    function collapse(d) {
        if (d.children) {
            d._children = d.children;
            d._children.forEach(collapse);
            d.children = null;
        }
    }

    root.children.forEach(collapse);
    update(root);
});

d3.select(self.frameElement).style("height", "800px");

function update(source) {

    // Compute the new tree layout.
    var nodes = tree.nodes(root).reverse(),
        links = tree.links(nodes);
    var total = nodes.length || 1;
    // Normalize for fixed-depth.
    nodes.forEach(function (d) {
        d.y = d.depth * 180;
    });

    // Update the nodes…
    var node = svg.selectAll("g.node")
        .data(nodes, function (d) {
        return d.id || (d.id = ++i);
    });

    // Enter any new nodes at the parent's previous position.
    var nodeEnter = node.enter().append("g")
        .attr("class", "node")
        .attr("transform", function (d) {
        return "translate(" + source.y0 + "," + source.x0 + ")";
    })
        .on("click", click)
        .on("mouseover", function (d) {
        alert("over");
    })
        .on("mouseout", function (d) { /*this.text.style('display', 'none'); */
    });


    nodeEnter.append("circle")
        .attr("r", 1e-6)
      ...