Return asynchronous result from AJAX called from dynamically loaded page

Question

Currently I have a page which I have loaded using jQuery as follows:

$('#content').load('mypage.html');

This is called inside site.js. Inside the loaded page, I have loaded a script which I am trying to return an asynchronous result from, so it does not freeze.

The page is as follows:

<div id="mycontent"></div>

<script type="text/javascript" src="js/getmycontent.js"></script>
<script type="text/javascript">
    $(function() {
        $('body').ajaxComplete(function() {

            var ids = {
                "h1": 123,
                "h2": 12345
            };

            //$('.loader-wrapper').show();

            // Iterate over id numbers
            $.each(ids, function(k, v) {
                var mylist;

                var call = getMyList(v).done(function(r) {
                    if(r) {
                        mylist = r.mylist;
                    } else {
                        mylist = null;
                    }
                }).fail(function(x) {
                    alert(x);
                });

                console.log(mylist);

            });

            //$('.loader-wrapper').hide();
        });
    });
</script>

Here is the getmycontent.js:

function getMyList(id) {
    var url = 'https://api.myurl.org/v1/lists/' + id;
    return $.ajax({
        url: url,
        type: 'get',
        dataType: 'json'
    });
}

The console doesn't log anything when I have the ajaxComplete function on body, but I was doing some reading and this is what someone suggested I do for dynamically loaded pages.

When I remove the ajaxComplete call, I get this in the console:

send @ jquery.min.js:2
ajax @ jquery.min.js:2
w._evalUrl @ jquery.min.js:2
Re @ jquery.min.js:2
append @ jquery.min.js:2
(anonymous) @ jquery.min.js:2
z @ jquery.min.js:2
html @ jquery.min.js:2
(anonymous) @ jquery.min.js:2
u @ jquery.min.js:2
fireWith @ jquery.min.js:2
k @ jquery.min.js:2
(anonymous) @ jquery.min.js:2
load (async)
send @ jquery.min.js:2
ajax @ jquery.min.js:2
w.fn.load @ jquery.min.js:2
(anonymous) @ site.js:20
dispatch @ jquery.min.js:2
y.handle @ jquery.min.js:2
6VM400:34 undefined

This is VM400 from the console:

$(function() {
        $('body').ajaxComplete(function() {

            var ids = {
                "h1": 123,
                "h2": 12345
            };

            //$('.loader-wrapper').show();

            // Iterate over id numbers
            $.each(ids, function(k, v) {
                var mylist;

                var call = getMyList(v).done(function(r) {
                    if(r) {
                        mylist = r.mylist;
                    } else {
                        mylist = null;
                    }
                }).fail(function(x) {
                    alert(x);
                });

                console.log(mylist);

            });

            //$('.loader-wrapper').hide();
        });
    });

Answer 1

This might be because of the following reason:

Additional Notes:

• As of jQuery 1.9, all the handlers for the jQuery global Ajax events, including those added with the .ajaxComplete() method, must be attached to document.
• If $.ajax() or $.ajaxSetup() is called with the global option set to false, the .ajaxComplete() method will not fire.

For more info about $.ajaxComplete() have a look at the documentation.

Answer 2

The issue has been resolved by changing the page.html and getmycontent.js files respectively. Using a callback allowed me to handle the data once it has been retrieved. See ASync Callback Promise.

page.html:

<div id="mycontent"></div>

<script type="text/javascript" src="js/getmycontent.js"></script>
<script type="text/javascript">
    function callback(result) { console.log(result) }

    $(function() {
            var ids = {
                "h1": 123,
                "h2": 12345
            };

            //$('.loader-wrapper').show();

            // Iterate over id numbers
            $.each(ids, function(k, v) {
                var call = getMyList(v, callback);
            });
    });
</script>

getmycontent.js:

function getMyList(id, callback) {
    var url = 'https://api.myurl.org/v1/lists/' + id;
    $.ajax({
        url: url,
        type: 'get',
        dataType: 'json',
        async: true,
        success: callback
    });
}