popup.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <link rel="stylesheet" href="styles/popup.css" />
    <title>Cross-Browser QRCode generator for Javascript</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <meta
      name="viewport"
      content="width=device-width,initial-scale=1,user-scalable=no"
    />
    <script type="text/javascript" src="js/jquery.min.js"></script>
    <script type="text/javascript" src="js/qrcode.js"></script>
  </head>
  <body>
    <p>You need to click this extension when you are on any Localhost page</p>
    <div
      id="qrcode"
      style="width: 100px; height: 100px; margin-top: 15px;"
    ></div>
    <br /><input
      id="text"
      type="text"
      value="www.google.com"
      style="width: 80%;"
    />

    <script type="text/javascript" src="js/popup.js"></script>
  </body>
</html>