版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/qr-scanner/1.4.2/qr-scanner-worker.min.js
- https://cdn.bootcdn.net/ajax/libs/qr-scanner/1.4.2/qr-scanner.legacy.min.js
- https://cdn.bootcdn.net/ajax/libs/qr-scanner/1.4.2/qr-scanner.min.js
- https://cdn.bootcdn.net/ajax/libs/qr-scanner/1.4.2/qr-scanner.umd.min.js
- https://cdn.bootcdn.net/ajax/libs/qr-scanner/1.4.2/types/qr-scanner.d.ts