d3 force layout with brushing and selecting of nodes

forked from zrlram's block: d3 force layout with brushing and selecting of nodes

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<!DOCTYPE html>
<html>
  <head>
    <title>Force Brush</title>
    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/d3@2.10.3/d3.v2.js"></script>
    <style type="text/css">
      circle.node {
        stroke: #fff;
        stroke-width: 1.5px;
      }
​
      rect.extent {
        fill: #bbbbbb;
      }
​
      line.link {
        stroke: #999;
        stroke-opacity: .6;
      }
​
    </style>
​
​
  </head>
  <body>
    <div id="chart"></div>
    <script type="text/javascript" src="force_brush.js"></script>
  </body>
</html> 
    

Modified http://mbostock.github.com/d3/d3.v2.js to a secure url

https://mbostock.github.com/d3/d3.v2.js