D3 Examples - Bookmarklet

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<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
  </style>
</head>
​
<body>
  <script>
   
    var svg= d3.select("body").append("svg")
        .attr("width", 960)
        .attr ("height", 500)
        
   d3.json("data.json",function (error, data) {
     d3.select("svg").selectAll("rect")
     .data(data)
     .enter()
     .append("rect")
     .attr ("height", 50)
     .attr ("y", 100)
     .attr ("width", function(d) {
            return d.stop-d.start
     })
     .width ("x", function (d) {
       return (d.start)
     })
     .attr ("fill", function (d) {
       if (d.direction == "forward") {
         return "lime"
       }
       else if (d.direction == "reverse")
       
       
     });
  </script>
</body>
    