dimaslanjaka / universal-framework

/**

 * get url parameter by name

 * @param name parameter name

 * @param url url target, null for current location.href

 */

function getParameterByName(name: string, url: string | null) {

  if (typeof URLSearchParams !== 'undefined') {

    if (!window.location.search) {

      url = window.location.href;

    }

    const urlParams = new URLSearchParams(url);

    return urlParams.get(name);

  }

  if (!url) {

    url = window.location.href;

  }

  name = name.replace(/[\[\]]/g, '\\$&');

  var regex = new RegExp('[?&]' + name + '(=([^&#]*)|&|#|$)'),

    results = regex.exec(url);

  if (!results) return null;

  if (!results[2]) return '';

  return decodeURIComponent(results[2].replace(/\+/g, ' '));

}