SA random attachment scroller

<html>
  <head>
    <script language="JavaScript">
      var wrapper, content, test;
      var more  = ''
      var imgIndex = 0;

      function getRandomAttachment() {
        min = Math.ceil(999999);
        max = Math.floor(100000);
        res = Math.floor(Math.random() * (max - min) + min);
        return `<img src="https://forums.somethingawful.com/attachment.php?attachmentid=${res}"></img>`
      }

      function scroller() {
        console.log('scroll height: ', window.scrollY)
        console.log('imgIndex: ', imgIndex)
        console.log('last image height: ', document.body.children[0].children[imgIndex].y)
        if (
          (window.innerHeight + window.scrollY) >= document.body.children[0].children[imgIndex].y - 2
        ) {
          console.log('hit bottom')
          content.innerHTML += getRandomAttachment();
          imgIndex += 1;
        }
      }
    </script>
  </head>

  <body>
      <div id="content" style="height: 100vh;"></div>

    <script language="JavaScript">
      content = document.getElementById("content");
      content.innerHTML = getRandomAttachment();

      if (window.addEventListener)
      window.addEventListener("scroll", scroller, false);
    </script>
  </body>
</html>