JSFiddle - React, Tailwind, and code Playground

JavaScript

var xml = '<?xml version="1.0"?><foo>hello</foo>';
var url = 'data:application/xml;charset=utf-8,' + encodeURIComponent(xml);

var xhr = new XMLHttpRequest();
xhr.open('GET', url, true);
xhr.send(null);

if( xhr.readyState === 4 ){
    console.log( xhr.responseXML );
}