svg download

javascript

function loadScript(url) {
    var script = document.createElement("script");  // create a script DOM node
    script.src = url;  // set its src to the provided URL
    document.head.appendChild(script);  
}

loadScript('https://cdnjs.cloudflare.com/ajax/libs/FileSaver.js/1.3.3/FileSaver.min.js')

/*
pass in either myDOM, myid, or myclass, just one of them
also need to import saveas from
https://github.com/eligrey/FileSaver.js/blob/master/src/FileSaver.js
*/
function iwDowloadSVG(myDOM, iden={mytag: null, myid: null, myclass:null}) {
        var svgNode = myDOM
        if (iden.mytag) svgNode = document.getElementsByTagName(iden.mytag)[0]
        else if (iden.myid) svgNode = document.getElementById(iden.myid)
        else if (iden.myclass) svgNode = document.getElementsByClassName(iden.myclass)[0]
        svgNode.setAttribute("title", 'background');
        svgNode.setAttribute("version", 1.1);
        svgNode.setAttribute("xmlns", "http://www.w3.org/2000/svg");
        var svgStr = svgNode.outerHTML;
        var blob = new Blob([svgStr], {type: "image/svg+xml;charset=utf-8"});
        saveAs(blob, "background.svg");
}