JSFiddle - React, Tailwind, and code Playground

JavaScript

function makeRequest(i) {
    var ajaxTime = new Date().getTime();
    $.ajax({
        url: '/echo/json/',
        type: 'POST',
        data: {
            json: JSON.stringify({
                hello: 'world'
            }),
            delay: i
        }
    }).done(function () {
        var total = new Date().getTime() - ajaxTime;
        console.log('Elapsed time: ' + total);
    });
}

$(function () {
    var i;
    for (i = 0; i < 5; i++) {
        makeRequest(i);
    }
});