index.html

<!DOCTYPE html>
<html>

<head>
    <meta charset="UTF-8">
    <title>Hello World!!</title>
</head>

<body>
    <h1>Hello World!</h1>

    We are using Node.js <span id="node-version"></span>, Chromium <span id="chrome-version"></span>, Electron <span id="electron-version"></span>, and Serialport <span id="serialport-version"></span>

    <div id="error"></div>
    <div id="ports"></div>
</body>

<script src="./renderer.js"></script>

</html>