D3 Barchart with axes and scales (Data: randomly generated)

Simple barchart in D3, with axes and scales

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>CMT212 Lab Week 2</title>
    <script src="//d3js.org/d3.v4.min.js" charset="utf-8"></script>
</head>
<body>
    <input type="button" onclick="update()" value="Update"/>
    <input type="range" value="50" min="0" max="100" id="maximum">
    <div id="vis">
    </div>
  <script src="script.js"></script>
  </body>
</html>
​
    

https://d3js.org/d3.v4.min.js