版本：1.5.1
- https://cdn.bootcdn.net/ajax/libs/qrcode/1.5.1/qrcode.js
- https://cdn.bootcdn.net/ajax/libs/qrcode/1.5.1/qrcode.min.js
- https://cdn.bootcdn.net/ajax/libs/qrcode/1.5.1/qrcode.tosjis.js
- https://cdn.bootcdn.net/ajax/libs/qrcode/1.5.1/qrcode.tosjis.min.js