subying-chrome-ex-qrcode-by-url
/
popup.html

<!doctype html>
<html>
  <head>
    <title>二维码</title>
    <script src="src/jquery-2.1.3.min.js"></script>
    <script src="src/jquery.qrcode.js"></script>
    <script src="popup.js"></script>
  </head>
  <body>
  	<div id="qrcode"></div>
  </body>
</html>