waiting 100....
waiting 200....
waiting 300....
waiting 400....
waiting 500....
waiting 600....
waiting 700....
result: waited 100msresult: waited 200msresult: waited 300msresult: waited 400msresult: waited 500msresult: waited 600msresult: waited 700msresult: waited 800msresult: waited 900msresult: waited 1000ms