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Is possible in on click function in jQuery wait for ajax complete and then do some code?

I want show modal after ajax is complete, here is my code:
$('.mymodalbtn').on('click', function (e) {
modalWindow = $(this).attr('data-target');
// alert(modalWindow);
$(document).ajaxStop(function () {
//0 === $.active
$(modalWindow).modal('show');
});
});
It is possible to do that? Now modal show after every ajax complete.
Thank you.

You can use .ajaxComplete() method of ajax request,which registers a handler to be called when Ajax request is completed.
Read more here.

Use complete event when your ajax call completed.
$('.mymodalbtn').on('click', function (e) {
modalWindow = $(this).attr('data-target');
$.ajax({
type: 'GET',
url: 'your_url',
success: function (responseData, textStatus) {
},
complete: function (textStatus) {
$(modalWindow).modal('show');
},
error: function (responseData)
{
}
});
});

I'm not sure about the way you're doing an ajax call, but I've been able to do it with the post super global
$_post(phpfile.php, $_post(phpfile.php, {variables to send}, function) you can use data as a parameter for the function and it will be anything that PHP echoes including error messages

Thank you for inspiration finally I do it this way.
global variable:
window.modal = "";
on click function:
$('.mymodalbtn').on('click', function (e) {
modalWindow = $(this).attr('data-target');
window.modal = modalWindow;
});
and ajax complete:
$(document).ajaxComplete(function (event, request, settings) {
if(window.modal != ""){
$(window.modal).modal('show');
window.modal = "";
}
});
Hope it is allright :-)

try to use setTimeout.
setTimeout(function(){
$('#mymodal').modal('show');
},4000);

Yes it is possible. You can use .ajaxStop() or .ajaxComplete() or in .ajaxSuccess()

Alert before Ajax request in a loop with JQuery

I am trying to have a loop that asks the user for a confirmation before doing a synchronous ajax request and it is not working in order. This is my code:
<script>
$(document ).ready(function() {
for(var i = 0; i < 3; i++) {
alert("iteration "+i);
$(".demo").easyOverlay("start");
$.ajax({
async: false,
url: "http://rest-service.guides.spring.io/greeting"
}).then(function(data) {
$('.demo').append(data.id);
$('.demo').append(data.content);
$(".demo").easyOverlay("stop");
});
}
});
</script>
The behaviour I am having with my code is like this:
Ask for the first confirmation.
Ask for the second confirmation.
Ask for the third confirmation.
Executed the three ajax calls one after the other.
It looks like for some reason all the ajax calls gets delayed until the alerts are all confirmed and I don't know why. I tried to achieve my same goal without using a loop and by repeating the code 3 times and I get the same exact strange behaviour.
Edit:
If i put the following line in 'then()' to check if the html is actually modified I can see in the console that the things actually happens in order and they just don't appears in the browser until I confirm every alert and that's what gives the impression that the order of execution is not correct. So I need to figure out why reflecting the changes done to the html is delayed and is not done immediately.
console.log($('.demo').html());

IMO jQuery.Deferred() object will be the most promising way.
The Deferred object, is a chainable utility object created by calling the jQuery.Deferred() method. It can register multiple callbacks into callback queues, invoke callback queues, and relay the success or failure state of any synchronous or asynchronous function.
deferred objects can be used for processing asynchronous events - you initiate an action and then register a callback which will be invoked when the action has completed. This includes AJAX, although there are plenty of other uses too.
Where asks for resolved
function callAjaxMethod(url, step) {
return $.Deferred(function() {
//Confirm box for use inputs
if(confirm(step))
{
//Ajax call
$.ajax(url).done(function(data){
//Do something
//Update your HTML if needed
});
}
setTimeout(function() {
//This will resolve your call again
this.resolve();
}.bind(this), 1000);
})
}
Deferred object
var defer = $.Deferred().resolve();
var counters = [1, 2, 3, 4, 5];
$.each(counters, function(key, value) {
defer = defer.then(function() {
return callAjaxMethod('URL', value);
});
});
It will call when all done
defer.then(function() {
//It will call when all done
});
Few of the documentation
Official jQuery.Deferred
Call ajax via jQuery deferred's
Article on Multiple jQuery promises
Hope this helps you :)
var $demo = $('#demo');
var ajaxURL = 'https://jsonplaceholder.typicode.com/posts';
function callAjaxMethod(url, step) {
return $.Deferred(function() {
//Confirm box for user inputs
if(confirm(step))
{
//Ajax call
$.ajax(url).done(function(data){
//Do something
//console.log(data);
//Update the HTML OK
$demo.append(step + ": Success" + "<br/>");
});
}
else
{
//Update the HTML when cancel
$demo.append("<font color='red'>"+ step +": Cancelled </font>" + "<br/>");
}
//Use timeout to get the resolved
setTimeout(function() {
this.resolve();
}.bind(this), 1000);
})
}
//Defer object
var defer = $.Deferred().resolve();
var counters = ['call 1', 'call 2', 'call 3', 'call 4', 'call 5'];
//Loop your calls
$.each(counters, function(key, value) {
defer = defer.then(function() {
return callAjaxMethod(ajaxURL, value);
});
});
defer.then(function() {
//It will call when all done
$(demo).append("<br/><br/>"+"ALL DONE");
});
div
{
color: blue;
font-size: 14px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="demo"></div>

That is because you should do the looping inside the Ajax request callback.
When you do it this way, the whole code is executed in a synchronic manner, whilst if you were to do so when the Ajax request callback is invoked, the requests and alerts would be executed like you would expect.
Edit:
Here is an example: (generic, you can customize it to your needs)
do(3)
function do(i) {
if (i === 0) return
$.ajax({...}).then(function() {
alert(...)
do(i-1)
})
}

Everytime ajax call fire it first ask for confirmation. If you allow then only ajax call fire and call for next ajax call and ask for confirmation and so on..
Please check below snippet for more understanding.
//call first time
doAjax(1,3)
//Function to call ajax repeatedly
function doAjax(arrCount,maxCount)
{
if (confirm("iteration "+arrCount)) {
$.ajax({
url: 'myUrl',
type: "POST",
data: {
// data stuff here
},
success: function (data) {
arrCount++;
//Next ajax call when current ajax call has been finished.
if(arrCount<=maxCount){
doAjax(arrCount,maxCount);
}
}
});
}
}

jQuery ajax asyncrhonous calling

I'm trying to make some actions after an ajax call done with jquery.
I have seen that if i use a function like this:
function DownloadData() {
$.ajax({
url: "/api/AlbumsRest",
accepts: "application/json",
cache: false,
success: function () {
/*binding stuff*/
},
error: function (XMLHttpRequest, textStatus, errorThrown) {
alert('Error' + textStatus);
}
});
}
The ajax request it's done in async mode. I don't want to change it because i don't want to freeze the page. But i would like to make some actions (animations, effects etc) after this ajax is completed.
So, my question is, how can i to know if i'm at the end of this request without using the success event
If i call DownloadData function like this:
function DownloadNextData() {
DownloadData();
SlideOutAnimation();
SlideInAnimation();
}
I need to make slides after async request has been made.
Some idea ?

Using jQuery Deferred Objects you should return the result of $.ajax() from DownloadData
function DownloadData() {
return $.ajax({...});
}
and then you can register a function outside of your AJAX handler that'll only get called once the AJAX call has completed:
function DownloadNextData() {
DownloadData().done(function() {
SlideOutAnimation();
SlideInAnimation();
});
}
behold - your animation processing is completely decoupled from your AJAX function :)
To simplify things, .done can also actually take a list of function references:
function DownloadNextData() {
DownloadData().done(SlideOutAnimation, SlideInAnimation);
}
Note that in this case you can't supply your own function arguments - they'll actually get passed the contents of the AJAX data.

function DownloadData() {
return $.ajax({
url: "/api/AlbumsRest",
accepts: "application/json"
});
}
function DownloadNextData() {
SlideOutAnimation();
SlideInAnimation();
}
DownloadData().done(DownloadNextData);

Try $.ajaxcomplete. here is the documentation for it http://api.jquery.com/ajaxComplete/

Elegant javascript - making function fire when 3 different AJAX requests have happened

I have three different AJAX queries that I want to hit various services. When they've all come back (or timed out) I'd like them to call a function.
I can imagine lots of ways of doing this, like having an intermediate function count when all the requests have come in, but is there a beautiful solution?

jQuery allows you to do what you want. See
http://www.erichynds.com/jquery/using-deferreds-in-jquery/
Naturally this only works if you are using jQuery, or can use jQuery.

If you are using jQuery 1.5 or later, you can use the jQuery.when method. For example:
$.when($.ajax("/page1.php"),
$.ajax("/page2.php")).done(function(a1, a2) {
/* a1 and a2 are arguments resolved for the
page1 and page2 ajax requests, respectively */
var jqXHR = a1[2]; /* arguments are [ "success", statusText, jqXHR ] */
if ( /Whip It/.test(jqXHR.responseText) ) {
alert("First page has 'Whip It' somewhere.");
}
});
Otherwise, see the Promises/A design pattern.

You can accomplish this easily with jQuery using the complete callback
var checked = 0;
$(function() {
$.ajax({ url: "1st ajax", complete: function(){ checked++; Check(); }});
$.ajax({ url: "2nd ajax", complete: function(){ checked++; Check(); }});
$.ajax({ url: "3rd ajax", complete: function(){ checked++; Check(); }});
}
function Check() {
if (checked >= 3) {
// all 3 have been successfully completed or timedout
}
}
or using then() deferred object to call the sequentially:
$.get("1st ajax").then(function(){
$.get("2nd ajax").then(function(){
$.get("3rd ajax").then(function(){
// call something
});
});
});
or using then() deferred object to call them without waiting with Check() method:
$.get("1st ajax").then(function(){ checked++; Check(); });
$.get("2nd ajax").then(function(){ checked++; Check(); });
$.get("3rd ajax").then(function(){ checked++; Check(); });

Hmm, maybe you could have a boolean value set to true once the last function called is executed fully? I suppose that this would pose a problem if the functions are being executed asynchronously, though.

Abort all jQuery AJAX requests globally

Is there a way to abort all Ajax requests globally without a handle on the request object?
The reason I ask is that we have quite a complex application where we are running a number of different Ajax requests in the background by using setTimeOut(). If the user clicks a certain button we need to halt all ongoing requests.

You need to call abort() method:
var request = $.ajax({
type: 'POST',
url: 'someurl',
success: function(result){..........}
});
After that you can abort the request:
request.abort();
This way you need to create a variable for your ajax request and then you can use the abort method on that to abort the request any time.
Also have a look at:
Aborting Ajax

You cannot abort all active Ajax requests if you are not tracking the handles to them.
But if you are tracking it, then yes you can do it, by looping through your handlers and calling .abort() on each one.

You can use this script:
// $.xhrPool and $.ajaxSetup are the solution
$.xhrPool = [];
$.xhrPool.abortAll = function() {
$(this).each(function(idx, jqXHR) {
jqXHR.abort();
});
$.xhrPool = [];
};
$.ajaxSetup({
beforeSend: function(jqXHR) {
$.xhrPool.push(jqXHR);
},
complete: function(jqXHR) {
var index = $.xhrPool.indexOf(jqXHR);
if (index > -1) {
$.xhrPool.splice(index, 1);
}
}
});
Check the result at http://jsfiddle.net/s4pbn/3/.

This answer to a related question is what worked for me:
https://stackoverflow.com/a/10701856/5114
Note the first line where the #grr says: "Using ajaxSetup is not correct"
You can adapt his answer to add your own function to window if you want to call it yourself rather than use window.onbeforeunload as they do.
// Most of this is copied from #grr verbatim:
(function($) {
var xhrPool = [];
$(document).ajaxSend(function(e, jqXHR, options){
xhrPool.push(jqXHR);
});
$(document).ajaxComplete(function(e, jqXHR, options) {
xhrPool = $.grep(xhrPool, function(x){return x!=jqXHR});
});
// I changed the name of the abort function here:
window.abortAllMyAjaxRequests = function() {
$.each(xhrPool, function(idx, jqXHR) {
jqXHR.abort();
});
};
})(jQuery);
Then you can call window.abortAllMyAjaxRequests(); to abort them all. Make sure you add a .fail(jqXHRFailCallback) to your ajax requests. The callback will get 'abort' as textStatus so you know what happened:
function jqXHRFailCallback(jqXHR, textStatus){
// textStatus === 'abort'
}