JSFiddle - React, Tailwind, and code Playground

by gene

HTML

<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
    <button id="remove">remove</button>
    <button id="reinstate">reinstate</button>
    <button onclick="alert('foo')">alert</button>
    <div id="graph"></div>

CSS

.link {
  stroke: #000;
  stroke-width: 1.5px;
}

.node {
  fill: #666;
  stroke: #fff;
  stroke-width: 1.5px;
}

.node.a { fill: #1f77b4; }
.node.b { fill: #ff7f0e; }
.node.c { fill: #2ca02c; }

.node.modified { fill: 'red' ! important; }

JavaScript

bvar a = {id: "a", active:true}, 
    b = {id: "b", active:false}, 
    c = {id: "c", active:true};

var width = 500,
    height = 500;

var color = d3.scale.category10();

var nodes = [a, b, c],
    links = [{source: a, target: b}, 
             {source: a, target: c}, 
             {source: b, target: c}];

var force = d3.layout.force()
    .nodes(nodes)
    .links(links)
    .charge(-400)
    .linkDistance(120)
    .size([width, height])
    .on("tick", tick);

var svg = d3.select("#graph").append("svg")
    .attr("width", width)
    .attr("height", height);

var node = svg.selectAll(".node"),
    link = svg.selectAll(".link");



function remove() {
    b.active = false;
    showActive();
}

function reinstate() {
    b.active = true;
    showActive();
}

start();

function start() {
  link = link
 /*     .filter(function(d) { 
          var f =  d.source.active && d.target.active;
          if (f)
              console.log("filtered", d);
          return f;
      }) */
      .data(force.links(), function(d) { return d.source.id + "-" + d.target.id; });
  link.enter().insert("line", ".node").attr("class", "link");
  link.exit().remove();

  node = node.data(force.nodes(), function(d) { return d.id;});
  node.enter().append("circle").attr("class", function(d) { return "node " + d.id; }).attr("r", 8);
 // node.exit().remove();

  force.start();
}

function tick() {
    node.attr("cx", function(d) { return d.x; })
      .attr("cy", function(d) { return d.y; })

    link.attr("x1", function(d) { return d.source.x; })
      .attr("y1", function(d) { return d.source.y; })
      .attr("x2", function(d) { return d.target.x; })
      .attr("y2", function(d) { return d.target.y; });
}

function showActive() {
    console.log('Hide InActive');
    //link = link.data(force.links(), function(d) { return d.source.id + "-" + d.target.id; });
    
    // filter before data call
//    link = svg.selectAll(".link")
//        .filter(function(d) { return ( d.source.active &&...