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Multiple ajax calls on one page

I'm trying to create a chat app with jQuery without the need for setTimeout to minimize the number of ajax requests:

function checkChat(){    
  new jQuery.ajax({
        'url'     : './chat/check.php',
        'cache'   : false,
        'success' : function(messages) {
                      if( messages.length ) {
                          $("#empty_chat").append(messages);
                          //write to chat wall
                       }
                       checkChat();
                   }
   });
}

On a simple page that works great, but on a page where there are other ajax events (like navigation), the request is queued and nothing is displayed until the messages are empty.

The cursor is also in a waiting state.

Is there a way to solve this?

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2 answers


Not really, if you don't want to peek into a comet, you still have to poll for messages, and setTimeout is fine.

The recursion you set where checkChat () is called recursively must be set to setTimeout or you will overflow the lol stream

setTimeout(checkChat,2000);


and you need to remove the new operator and just do

jQuery.ajax or $ .ajax

Comet and jQuery

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The impact of queued AJAX requests is most likely due to limiting active requests to the same domains, which are the default for most browsers by default.



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