function to parse the querystring into a JSON object

parseQueryString.js

export function() {            
  var items = location.search.slice(1).split('&');
  var obj = {};
  items.forEach(function(item) {
    item = item.split('=');
    obj[item[0]] = decodeURIComponent(item[1] || '');
  });
  return JSON.parse(JSON.stringify(obj));
}