A simple test to check when d3 calls enter and update functions.

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<!DOCTYPE HTML>
<html>
  <head>
    <meta charset="utf-8">
​
    <title>D3 Example</title>
​
    <!--[if lt IE 9]>
    <script src="https://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
    <![endif]-->
    
       <link rel="style" src="style.css">
  </head>
​
  <body>
    <script src="//d3js.org/d3.v3.min.js" charset="utf-8"></script>    
    <script src="example.js"> </script>
  </body>
​
</html>
​
    

Modified http://html5shiv.googlecode.com/svn/trunk/html5.js to a secure url

https://html5shiv.googlecode.com/svn/trunk/html5.js

https://d3js.org/d3.v3.min.js