Событие: пользователь провёл на сайте заданное время | Event: the user spent the specified time on the site

timeMoreThenSpecifiedTime.js

/**
 * @description: Событие: пользователь провёл на сайте заданное время | Event: the user spent the specified time on the site
 * @version: v1.1, 09.08.2021
 * @author: Artem Kuznecov, web.master-artem.ru
 * @cacher: https://snippets.cacher.io/snippet/4a2daee81c7ea7033007
 **/
(function(){
  
  var targetMoreThenS = 30;
  var nameEvent = 'timeMoreThen30s';
  var ymID = 1111111;
  var openDateS = Math.round(new Date() / 1000);//seconds instead of milliseconds

  if ( !localStorage.getItem('timeOpenSiteS') ) {
    localStorage.setItem('timeOpenSiteS', openDateS);     
  }

  if ( !localStorage.getItem(nameEvent) ) {
    localStorage.setItem(nameEvent, false);     
  }

  if ( localStorage.getItem(nameEvent) == 'false' ) {
    var timeSDetectInterval = setInterval(function(e) {
      var curDateS = Math.round(new Date() / 1000);
      if (curDateS > (Number(localStorage.getItem('timeOpenSiteS')) + targetMoreThenS) ) {
        ym(ymID, 'reachGoal', nameEvent);
        localStorage.setItem(nameEvent, true);
        clearInterval(timeSDetectInterval);
      }
    }, 500);
  }

})();