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Detect all XMLHttpRequest calls are completed

If you can use jQuery you can use jQuery AJAX Deferred interface/methods and $.when method. $.ajax/$.post/$.get and other jQuery AJAX methods always return jQuery Deferred object:

$.get('anotherUrl')).then(function () {
    //all request complete

In native javascript you can use native Promise or any promise library:

Also good article about Promises -

Native Promise with XMLHttpRequest example:

function doAjaxRequest(method, url,
  var promise = new Promise();
  var xhr = new XMLHttpRequest();, url, true);

  // Register the event handler
  xhr.onload = function(){
    if(xhr.status === 200){
    } else{

  data = data || {};


  return promise;

Promise.all(doAjaxRequest('post', 'someUrl'),
doAjaxRequest('post', 'anotherUrl')).then(function
(values) {
    //all request complete

Categories : Javascript

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