JSFiddle - React, Tailwind, and code Playground

by Jennifer Piccione

HTML

<p id="result">Before</p>

JavaScript

var req = new XMLHttpRequest();
var out = document.getElementById("result");

req.addEventListener("load", function(e) {
  if (req.status == 200) {
    console.log("response is: " + req.responseText);
    out.textContent = req.responseText;
  }   
});     

// Send an "echo" request to the server.
var postData = new FormData();
postData.append("html", "Echo From Server");

req.open("POST", "/echo/html/");
req.send(postData);