[javascript] jQuery has deprecated synchronous XMLHTTPRequest

No one of the previous answers (which all are correct) was suited to my situation: I don't use the async parameter in jQuery.ajax() and I don't include a script tag as part of the content that was being returned like:

<div> 
     SOME CONTENT HERE
</div>
<script src="/scripts/script.js"></script> 

My situation is that I am calling two AJAX requests consecutively with the aim to update two divs at the same time:

function f1() {
     $.ajax(...); // XMLHTTP request to url_1 and append result to div_1
}

function f2() {
     $.ajax(...); // XMLHTTP request to url_2 and append result to div_2
}

function anchor_f1(){
$('a.anchor1').click(function(){
     f1();
})
}

function anchor_f2(){
$('a.anchor2').click(function(){
     f2();
});
}

// the listener of anchor 3 the source of problem
function anchor_problem(){
$('a.anchor3').click(function(){
     f1();
     f2();
});
}

anchor_f1();
anchor_f2();
anchor_problem();

When I click on a.anchor3, it raises the warning flag.I resolved the issue by replacing f2 invoking by click() function:

function anchor_problem(){
$('a.anchor_problem').click(function(){
     f1();
     $('a.anchor_f2').click();
});
}

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