Underscore mixin: SVGtoBase64

underscore-SVGtoBase64.js

// Underscore mixin: SVGtoBase64
// Usage: background-image: url(data:image/svg+xml;base64,[output]);
_.mixin({
  SVGtoBase64: function( svg ){
    // fallback (to the first item in the document);
    if( typeof svg != "string") svg = new XMLSerializer().serializeToString(document.getElementsByTagName("svg")[0]);
    var base64 = window.btoa( svg );
    // return the whole css line?
    return base64;
  }
});