JavaScript解码器不多。

There aren't many JavaScript decoders.

最简单的方法是在您的服务器上运行 ZXing 或类似软件。然后，您可以POST图像并在响应中返回解码结果。

The easiest way is to run ZXing or similar on your server. You can then POST the image and get the decoded result back in the response.