JSFiddle - React, Tailwind, and code Playground

HTML

<textarea id="result" style="width:100%; height:20em"></textarea>

JavaScript

var oReq = new XMLHttpRequest();

oReq.open("GET", 'https://www.w3.org/TR/PNG/iso_8859-1.txt', true);
oReq.onload = function(e) {
  var myText = oReq.responseText; 
  document.getElementById('result').value = myText;
}
oReq.send();