Parsing HTML received from AJAX request.

parse-html.js

var ajax = new XMLHttpRequest();

ajax.onreadystatechange = function() {
  if (ajax.status == 200 && ajax.readyState == 4) {
    var answer = document.createElement( 'html' );
    answer.innerHTML = ajax.responseText;
    console.log(answer.querySelector('.language-python').innerHTML);
  }
}

ajax.open("GET", "/docs/language-bindings/python", true);
ajax.send();