JSFiddle - React, Tailwind, and code Playground
JavaScript
var html = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>IIS 8.0 Detailed Error - 404.0 - Not Found</title> </head> <body>xxx some code here yy</body> </html>'
var parser = new DOMParser()
var doc = parser.parseFromString(html, "text/html")
console.log(doc.body.innerHTML)