Event Queuer while requesting data. When you have taks that cannot be done between the ajax request

EventQueuerwhilerequestingdata.js

var function_after_ajax = []; 
function fetchData() {
    $.ajax({
        url: url,
        method: 'GET/POST',
        dataType: 'json',
        data:params,
        success: onDataReceived
    });
    function onDataReceived() {
       //do stuff
       var fn; 
       while(fn = function_after_ajax.shift()) { fn(); }
       setTimeout(fetchData,  200);
     }
 }


 //use
 function_after_ajax.push(function() {
    //do_things                    
 });