IE11中的安全性错误

Question

我有一个高图（svg）我试图将其转换为图像base64格式。在Chrome中它在IE11中正常工作（抛出安全性错误）

  highchartsExport.nativeSVGtoImage($("#highchartcontainer").find("svg")[0],function(uri){
                    var data = $.param({'dataURL': uri, 'emailContent': $scope.content});
                    var config = {headers: {'Content-Type': 'application/pdf;'}}

在highchartsExport中：

 exp.nativeSVGtoImage = function(DOMObject,callback,format){
            if(!DOMObject.nodeName){
                throw new error("Se requiere un objeto DOM de tipo SVG. Obtener con document.getElementById o un selector de jQuery $(contenedor).find('svg')[0]");
            }

            var svgData = new XMLSerializer().serializeToString(DOMObject);
            var canvas = document.createElement("canvas");
            canvas.width = $(DOMObject).width();
            canvas.height = $(DOMObject).height();
            var ctx = canvas.getContext( "2d" );
            var img = new Image();//document.createElement("img");
            img.setAttribute( "src", "data:image/svg+xml;base64," + btoa(unescape(encodeURIComponent(svgData))) );
            img.onload = function() {
                ctx.drawImage( img, 0, 0 );

                 if(format === "jpeg" || format === "jpg"){
                     callback(canvas.toDataURL("image/jpeg"));
                 }else{
                     callback(canvas.toDataURL("image/png"));
                 }
            }; 
            return true;
        };

但它抛出的安全错误我试图设置交叉来源但仍然是同样的错误