JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://www.w3schools.com/dom/loadxmldoc.js"></script>
<button id="dan" onclick="SHOW()">SHOW</button>
<p id="demo"></p>

JavaScript

xmlDoc=loadXMLDoc("http://www.w3schools.com/dom/books.xml");

function SHOW(){
    document.getElementById("demo").innerHTML = xmlDoc.getElementsByTagName("title")[0].childNodes[0].nodeValue;
}