QR code image only gets downloaded successfully on IOS or flagship devices.

[muhammadnaeemtahir]

I have recently finished this project using qrcodejs Free QR code generator.

Everything else is fine, but on devices i.e. Android, it throws an error Download fail or an undefined.html file gets downloaded.

[emmymayo]

Depending on your context you can try this

const downloadQR = () => {
let link = document.createElement('a');
link.download = 'qrcode.png';
link.href = document.querySelector('#qrcode canvas').toDataURL()
link.click();
}