d3 | Redux action

Testing out a Redux action that makes a circle active on a click event, based on Philippe Rivière’s Redux + D3 in the browser block

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  
  <link href="https://unpkg.com/basscss@8.0.2/css/basscss.min.css" rel="stylesheet">
  <style>
    body { 
      background: #a634a0;
      font-size: 16px;
      font-family: -apple-system, BlinkMacSystemFont, Consolas, monaco, monospace;
    }
    button.btn {
      font-family : inherit;
      font-size: 16px;
      letter-spacing: 2px;
      font-weight: 700;
      font-weight: 500;
      cursor: pointer;
      display: inline-block;
      padding: .5rem 1rem;
      height: auto;
      border: 1px solid transparent;
      vertical-align: middle;
      -webkit-appearance: none;
      color: inherit;
      background-color: transparent;
      text-decoration: none;
    }
    button.btn-primary {
      color: #fff;
      background-color: #6b2167;
      border-radius: 3px;
    }
    button.btn-primary:hover {
      box-shadow: inset 0 0 0 20rem #952e90;
    }
  </style>
</head>
<body>
  <header class="pl2">
    <p>Click on circle to set state via a Redux action</p>
  </header>

<nav class="pl2">
    <button class="btn btn-primary">RESET</button>
  </nav>

</body>
</html>

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

https://cdnjs.cloudflare.com/ajax/libs/redux/3.7.2/redux.min.js