index.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <script src="https://cdn.jsdelivr.net/npm/processing-js@1.6.6/processing.min.js"></script>
  <link rel="stylesheet" href="index.css">
  <base href="data" target="_blank">
  <title>mosfet_sim</title>
</head>

<body>
<canvas data-processing-sources="
mosfet_sim.pde">
</canvas>
</body>
</html>