JSFiddle - React, Tailwind, and code Playground

JavaScript

(function() {
    var open_original = XMLHttpRequest.prototype.open;
    var send_original = XMLHttpRequest.prototype.send;
    
    XMLHttpRequest.prototype.open = function(method, url, async, unk1, unk2) {
        open_original.apply(this, arguments);
    };
    
    XMLHttpRequest.prototype.send = function(data) {
        this.onreadystatechange = function() {
            console.log('Works for me.');
        }
        send_original.apply(this, arguments);
    };
})();
var xmlhttp = new XMLHttpRequest();
xmlhttp.open('GET', '/echo/html/', true);
xmlhttp.send();