jquery ``` <script type="text/javascript" src="http://static.runoob.com/assets/jquery/2.0.3/jquery.min.js"></script> ``` [二维码生成插件qrcode](./二维码生成插件.md) ``` <script type="text/javascript" src="http://static.runoob.com/assets/qrcode/qrcode.min.js"></script> ```