get URL params from string

getURLParams.js

function getURLParams(url, includeEmptyValues) {
  return decodeURIComponent(url || window.location.search.slice(1)).
    replace(/.*\?/, '').split('&').
    reduce((params, value) => { 
      value = value.split('=')
      if (includeEmptyValues || typeof value[1] !== 'undefined')
        params[value[0]] = value[1]; 
      return params;
    }, {});
}