downloading binary data as a file

download_binary.js

function download_binary(binaryData, fileName, mime)
{
    file = new Blob([binaryData], { type: mime });
    downloadUrl = URL.createObjectURL(file);

    // download the Blob
    anchor = document.createElement('a');
    anchor.download = fileName;
    anchor.href = downloadUrl;
    anchor.dataset.downloadurl = mime + ":" + fileName + ":" + downloadUrl;
    document.body.appendChild(anchor);
    anchor.click();
    document.body.removeChild(anchor);
}