Saving dynamically created SVG in a WinJS app via the Windows.Data.Xml.Dom API

svg-to-xml.js

Windows.Storage.ApplicationData.current.localFolder.createFileAsync("example.svg", Windows.Storage.CreationCollisionOption.replaceExisting)
    .then(function(storageFile) {

        var serializer = new XMLSerializer()
          , xmldoc = new Windows.Data.Xml.Dom.XmlDocument()
          , xmlLoadSettings = new Windows.Data.Xml.Dom.XmlLoadSettings()
          , svgnode = document.querySelector('.container > svg')
          , svgstr = serializer.serializeToString(svgnode)

        xmlLoadSettings.prohibitDtd = false;
        xmlLoadSettings.resolveExternals = true;

        xmldoc.loadXml(svgstr, xmlLoadSettings);
        xmldoc.saveToFileAsync(storageFile);
    })
    .done(function() {
        // hooray!
    });