MediaWiki:Main Page.js

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const footer = document.querySelector('#footer');
const observer = new IntersectionObserver(entries => {
    entries.forEach(entry => {
        if (entry.isIntersecting) {
            document.body.classList.add('footer-visible');
        } else {
            document.body.classList.remove('footer-visible');
        }
    });
});

observer.observe(footer);

mw.hook('wikipage.content').add(function ($content) {
  const link = $content.find('a[href="/wiki/File:Doomguy.gif"]');

  link.removeAttr("href");

  link.on("click", function (e) {
    e.preventDefault();

    let audio = document.getElementById("SickTunes");

    if (!audio) {
      audio = document.createElement("audio");
      audio.id = "SickTunes";
      audio.src = "https://okayxairen.wiki/images/e/e0/E1M1_Roland.wav";
      audio.preload = "auto";
      audio.loop = "loop";
      document.body.appendChild(audio);
    }

    if (audio.paused) {
      audio.play();
    } else {
      audio.pause();
    }
  });
});