JSFiddle - React, Tailwind, and code Playground

JavaScript

$.when(
$.ajax({
    url: '/echo/html/',
    method: 'post',
    data: {
        html: '<p> Ajax data </p>'
    },
    success: function (resp) {
        $('body').append(resp)
    }
})).done(function () {
    $('body').append('All Done!')
});