adding text with whitespaces in svg text element
var legend = document.createElementNS("http://www.w3.org/2000/svg", "text");
    var tspan = document.createElementNS("http://www.w3.org/2000/svg", "tspan");
    // Set any attributes as desired
    legend.setAttribute("id","legend");
    legend.setAttribute("text-anchor", "middle");
    legend.setAttribute("alignment-baseline", "hanging");
    legend.setAttribute("xml:space","preserve");
    tspan.setAttribute("xml:space","preserve");
    tspan.setAttribute("id","tspanObj");
    var myText = document.createTextNode(legendTxt);
    tspan.appendChild(myText);
    legend.appendChild(tspan);
    legend.setAttribute("x", Math.round(this.options.windowWidth/2));
    legend.setAttribute("y", this.options.upperPadding+this.options.barH+this.options.legendDist);
    this.elements.jSvgElem.append(legend);

legend.setAttributeNS("http://www.w3.org/XML/1998/namespace", "xml:space","preserve");