I use EasyQRCodeJS, a library to generate Qr Codes.

The Qr code is displayed. However, I want to save the image in base 64 to use it later. The console shows the output in base64 format, but I can't store this value.

var storeBase64 = '';

var optionsQr = {

    text: 'Hello',

    width: 216,

    height: 216,

    correctLevel : QRCode.CorrectLevel.H,
    
    onRenderingEnd:function(options, dataURL) {
    
        console.info(dataURL); /* Ok */
        
        storeBase64 = dataURL; /* Nok */
        
    }
    
}

new QRCode(document.querySelector('#myqr'), optionsQr);

console.log(storeBase64); /* Nok */