Offering Downloading

Sometimes you want to let the user download/export some text or image.

Lists of type for Blobs: MDN Docs and iana media types

For any plaintext data formats, use ;charset=utf-8.

function download(text){
    const blob = new Blob([text], {type: 'image/svg+xml;charset=utf-8'});
    const svgUrl = URL.createObjectURL(blob);
    let downloadlink = document.createElement("a");
    downloadlink.href = svgUrl
    downloadlink.download = seed+".svg"
    document.body.appendChild(downloadlink);
    downloadlink.click();
    document.body.removeChild(downloadlink);
}