do a thing over and over

(function loop() {
  var rand = Math.round(Math.random() * 1000 * 1000);
  console.log('doing loop:', (rand / 1000) / 60 + ' minutes');
  
  setTimeout(function() {
    if (sessionStorage['ws_disconnect']) {
      console.log('reconnect');
      delete sessionStorage['ws_disconnect'];
    } else {
      console.log('disconnect');
      sessionStorage['ws_disconnect'] = true;
    }
    
    loop();
  }, rand);
}());