three.js/manual/resources/lesson.js

// Licensed under a BSD license. See license.html for license
/* eslint-disable strict */
'use strict';  // eslint-disable-line

(function(){

  if (window.frameElement) {
    // in iframe
    document.querySelectorAll('a').forEach(a => {
      // we have to send all links to the parent
      // otherwise we'll end up with 3rd party
      // sites under the frame.
      a.addEventListener('click', e => {
        // opening a new tab?
        if (a.target === '_blank') {
          return;
        }
        // change changing hashes?
        if (a.origin !== window.location.origin || a.pathname !== window.location.pathname) {
          e.preventDefault();
        }
        window.parent.setUrl(a.href);
      });
    });
    window.parent.setTitle(document.title);
  } else {
    if (window.location.protocol !== 'file:') {
      const re = /^(.*?\/manual\/)(.*?)$/;
      const [,baseURL, articlePath] = re.exec(window.location.href);
      const href = `${baseURL}#${articlePath.replace('.html', '')}`;
      window.location.replace(href);  // lgtm[js/client-side-unvalidated-url-redirection]
    }
  }

  if (window.prettyPrint) {
    window.prettyPrint();
  }

  // help translation services translate comments.
  document.querySelectorAll('span[class=com]').forEach(elem => {
    elem.classList.add('translate', 'yestranslate');
    elem.setAttribute('translate', 'yes');
  });

  if (window.threejsLessonUtils) {
    window.threejsLessonUtils.afterPrettify();
  }

}());

// ios needs this to allow touch events in an iframe
window.addEventListener('touchstart', {});