The question is: does setInterval wait for the end of the receiveComent function or does it call it every 500ml?

setInterval(receiveComent, 500)

    2 answers 2

    setInterval does not wait for the completion of the previous function call. If there is a danger of delaying the called function (for example, a long polling of the remote server), it is better to act based on setTimeout

     (function loop(){ setTimeout(function(){ // Здесь логика // ... // Рекурсивный вызов loop(); }, 1000); })();

      It calls whenever possible every 500ms.