JSFiddle - React, Tailwind, and code Playground

JavaScript

$.ajaxSetup({
    beforeSend: function(jqXHR, settings) {
        if ('/echo/json/'.indexOf(settings.url) !== -1) {
            $('body').text(settings.data);
        }
    }
});


$.ajax({
    url: '/echo/json/',
    type: 'POST',
    dataType: 'json',
    data: {
        a: 1,
        b: 2
    }
})