levenokk

   content: url('data:image/svg+xml; utf8, <svg 
    xmlns="http://www.w3.org/2000/svg"
    xmlns:xlink="http://www.w3.org/1999/xlink"
    width="33px" height="20px">
   <path fill-rule="evenodd"  fill="rgb(47, 201, 239)"
    d="M23.464,0.977 L21.349,3.086 L27.271,8.991 L-0.008,8.991 L-0.008,11.974 L27.271,11.974 L21.349,17.880 L23.464,19.988 L32.998,10.482 L23.464,0.977 Z"/>
   </svg>');

levenokk

function getUrlParameter(url, parameter) {
  parameter = parameter.replace(/[\[]/, '\\[').replace(/[\]]/, '\\]');
  var regex = new RegExp('[\\?|&]' + parameter.toLowerCase() + '=([^&#]*)');
  var results = regex.exec('?' + url.toLowerCase().split('?')[1]);
  return results === null ? '' : decodeURIComponent(results[1].replace(/\+/g, ' '));
}

function setUrlParameter(url, key, value) {

  var baseUrl = url.split('?')[0],

levenokk

let allowCrossDomain = function(req, res, next) {
    res.header('Access-Control-Allow-Origin', "*");
    res.header('Access-Control-Allow-Headers', "*");
    next();
}
app.use(allowCrossDomain); // чтобы все могли обращаться