Attachment 369885 Details for Bug 197891 – Test case

Test case

intersection-observer-initial-observation.html (text/html), 489 bytes, created by Ali Juma on 2019-05-14 12:57:06 PDT

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Creator: Ali Juma

Created: 2019-05-14 12:57:06 PDT

Size: 489 bytes

patch

obsolete

<!DOCTYPE html>

<script>
function createObserver() {
  var obs = new IntersectionObserver(() => {
      document.getElementById("output").innerHTML = "Got an observation";
  });
  obs.observe(document.getElementById("target"));
}
window.onload = function() {
  setTimeout(createObserver, 2500);
};
</script>


<body>
  <div id="target"></div>
  <div id="output"></div>
  2.5 seconds after load, you should see some text appear even if you don't
  interact at all with the window.
</body>

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Attachments on bug 197891: 369885 | 369985