jQueryのajaxによるポーリング

ajaxPolling.js

var totalCount   = 0;
var interval     = 30000;
var delay        = 3500;
var eachInterval = 1500;

function ajaxPolling(){
  $.ajax({
    url: "target url"
    success:function(data){
      var eachCount = 0;

      $(data).find('css selector')
             .not(':contains(exclude target css selector)')
             .find('real target selector').each(function(){

        setTimeout(function(parameter){
          return function(){
            $.ajax({
              url: "Construction of the url with parameter"
            });

            console.log(new Date() + ':' + (++totalCount));
          }
        }(this.parameter), delay + eachInterval * ++eachCount);

    });

    setTimeout(ajaxPolling, interval);

  }});
}

ajaxPolling();