JSFiddle - React, Tailwind, and code Playground

HTML

<div id='foo'>Text</div>

JavaScript

XMLHttpRequest.prototype.open = (function(open) {
        return function(method,url,async) {
            document.getElementById('foo').innerHTML = 'outgoing url: ' + url;
            console.log('the outgoing url is',url);
            open.apply(this,arguments);
        };
})(XMLHttpRequest.prototype.open);


function loadXMLDoc() {
  var xmlhttp;
    
   if (window.XMLHttpRequest) {
    xmlhttp=new XMLHttpRequest();
  }
  else {
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
    
  xmlhttp.onreadystatechange=function() {
    if (xmlhttp.readyState==4 && xmlhttp.status==200) {
        //document.getElementById("myDiv").innerHTML=xmlhttp.responseText;
    }
  }
  xmlhttp.open("GET",'/echo/json',true);
  xmlhttp.send();
}

loadXMLDoc();