Cordova - qrscanner

[cindyyy56]

Hello, I need help, I am creating an application that will scan qr code. I am using cordova and so I added the cordova qrscanner plugin. When I place "QRScanner" in my code, it does not work, the console tells me that "QRScanner is not defined". What should I do ?

QRScanner.prepare(camPrepare);
const btnScanner = document.querySelector(".btn1");
btnScanner.addEventListener("click", QRScanner.prepare(camPrepare));