JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#" id="btn">Ajax Loop</a>
<div id="divID"></div>

JavaScript

// jQuery on an empty object, we are going to use this as our queue
var ajaxQueue = $({});
var currentRequest = null;
$.ajaxQueue = function( ajaxOpts ) {
    // Hold the original complete function.
    var oldComplete = ajaxOpts.complete;
    // Queue our ajax request.
    ajaxQueue.queue(function( next ) {
        // Create a complete callback to fire the next event in the queue.
        ajaxOpts.complete = function() {
            // Fire the original complete if it was there.
            if ( oldComplete ) {
                oldComplete.apply( this, arguments );
            }
            // Run the next query in the queue.
            next();
        };
        // Run the query.
        currentRequest = $.ajax( ajaxOpts );
    });
};

// Ajax Call
function ajaxCall() {
    $.ajaxQueue({
        type: "POST",
        url: '/echo/json/',
        async: true,
        cache: false,
        success: function( result ) {
            $('#divID').append($('<div/>').html('Result '+num).fadeIn(300));
            num++;
        }
    });
}
var num = 1;
// On Click Event
$("#btn").on("click", function(e) {
    e.preventDefault();
    ajaxQueue.clearQueue();
    if (currentRequest) {
        currentRequest.abort();
    }
    $('#divID').html(''); // Clear current results
    num = 1;
    for(var i=0; i<40; i++) {
        ajaxCall();
    }
});