index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css" integrity="sha384-/Y6pD6FV/Vv2HJnA6t+vslU6fwYXjCFtcEpHbNJ0lyAFsXTsjBbfaDjzALeQsN6M" crossorigin="anonymous">

    <link href="https://fonts.googleapis.com/css?family=Encode+Sans:300,200" rel="stylesheet">

    <link rel="stylesheet" href="./assets/styles.css">
  </head>
  <body>
  	<div class="page-root container-fluid">
      <div class="row justify-content-center moneyshot">
        <div class="col-10">
          <p class="mascotBlock">
            <a href="https://github.com/garris/BackstopJS" class="lemur-link">
              <img id="theLemur" src="assets/lemurFace.png" class='lemurInYourFace' alt="">
            </a>
            <img id="lemurButt" src="assets/lemurButt.png" class='lemurButtInYourFace' alt="">
          </p>
          <p class="logoBlock">
            <img src="assets/BackstopJS3.svg" class='BackstopJS3' alt="BackstopJS 3">
          </p>
        </div>
        <h1>Visual regression testing for web apps.</h1>
      </div>
      <div class="row justify-content-center">
        <p class="supportsBlock col-10">
          Supports screen rendering with <a href="https://chromium.googlesource.com/chromium/src/+/lkgr/headless/README.md" class="chromy">Chrome-headless</a>, <a href="http://phantomjs.org/" class="casper">Phantom</a> and <a href="https://github.com/laurentj/slimerjs/" class="casper">SlimerJS</a>.
          Add your own interactions with <a href="https://github.com/OnetapInc/chromy" class="chromy">ChromyJS</a> and <a href="http://casperjs.org/" class="casper">CasperJS</a> scripting.
        </p>
      </div>
      <div class="row justify-content-center">
        <p class="getItBlock col-10">
          BackstopJS was created by <a href="https://www.linkedin.com/in/garrisshipon/">Garris Shipon</a> with contributions from <a href="https://github.com/garris/BackstopJS#credits">these amazing engineers</a>.
        </p>
        <p class="getItBlock col-10">
          Opensourced under the <a href="https://raw.githubusercontent.com/garris/BackstopJS/master/LICENSE">The MIT License</a>.
        </p>
        <p class="getItBlock col-10">
          <span class="cta"><a href="https://github.com/garris/BackstopJS" class="github-link"><img src="assets/github-icon.png" class="github-icon" alt="Get it on GitHub"></a></span>
          <span class="cta"><a href="https://github.com/garris/BackstopJS">Get it on github!</a></span>
        </p>
      </div>
    </div>
    <p id="noShow" style="display: none;">This is text that should not show.</p>
    <!-- Optional JavaScript -->
    <!-- jQuery first, then Popper.js, then Bootstrap JS -->
    <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js" integrity="sha384-b/U6ypiBEHpOf/4+1nzFpr53nxSS+GLCkfwBdFNTxtclqqenISfwAzpKaMNFNmj4" crossorigin="anonymous"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js" integrity="sha384-h0AbiXch4ZDo7tp9hKZ4TsHbi047NrKGLO3SEJAg45jXxnGIfYzk4Si90RDIqNm1" crossorigin="anonymous"></script>

  </body>
</html>

<script type="text/javascript">
  const READY_LAG_MS = 3000;
  const READY_TAG = '_the_lemur_is_ready_to_see_you';
  const LEMUR_CLASS_ACTION = 'hideLemur';
  const COOKIE_TEST = /cookie/i;
  const CLICK_TEST = /click/i;
  const DELAY_TEST = /delay/i;

  if (COOKIE_TEST.test(window.location.search)) {
    showCookies();
  }
  if (CLICK_TEST.test(window.location.search)) {
    modifyLemurBehavior();
  }
  if (DELAY_TEST.test(window.location.search)) {
    delayLemurification();
  }

  function modifyLemurBehavior () {
    document.body.addEventListener('click', evt => {
      if (evt.target.id === 'theLemur') {
        containTheLemur();
        evt.preventDefault();
        setTimeout(setReadyFlags, READY_LAG_MS + 1000);
      } else {
        releaseTheLemur();
      }
    });
    console.log('lemur behavior is modified');
  }

  function showCookies () {
    document.getElementsByClassName('logoBlock')[0].innerText = 'cookies > ' + document.cookie;
  }

  function setReadyFlags () {
    console.log(READY_TAG);
    document.body.classList.add(READY_TAG);
  }

  function releaseTheLemur () {
    document.body.classList.remove(LEMUR_CLASS_ACTION);
  }

  function containTheLemur () {
    document.body.classList.add(LEMUR_CLASS_ACTION);
  }

  function delayLemurification () {
    containTheLemur();
    setTimeout(releaseTheLemur, READY_LAG_MS);
    setTimeout(setReadyFlags, READY_LAG_MS + 1000);
  }
</script>