var count = 0;

     var codes = "";

     function refreshCache(urls){

         try {

             var url = urls.split(",");

             if(url.length <=0){

                 alert("刷新失败，请配置刷新地址！");

                 return;

             }

             count = 0;

             refesh(url);

        }catch(err){

            alert("请求失败。");

        }

     } 

  function refesh(url){

         var u = url[count];

         console.log("第"+count+"个"+u);

         $.ajax({

             url : u,

             type : 'POST',

             dataType: "jsonp",

             timeout: 2000,

             cache:false,

             async:false,

             jsonpCallback: "jsonpcallback",

             success : function(data, status, xhr) {

                 console.log(u+"回调被执行了... 参数为："+data);

                 if(data == '0000'){

                     console.log(u+"回调执行成功");

                     count++;

                     if(count <20 && count < url.length){

                         refesh(url);

                     }

                 }else{

                     console.log(u+"回调执行失败");

                     alert("刷新失败，请稍后再试");

                 }

             },

             error : function(xhr, error, exception) {

                 alert("请求失败。");

             }

         });

 　　}