parseHTML( src )

import { parseHTML } from 'k6/html';
import http from 'k6/http';

export default function () {
  const res = http.get('https://k6.io');
  const doc = parseHTML(res.body); // equivalent to res.html()
  const pageTitle = doc.find('head title').text();
  const langAttr = doc.find('html').attr('lang');
}