nth-last-child-of-in-shadow-root.html

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This WPT test may be referenced by the following Test IDs:
- /css/selectors/invalidation/nth-last-child-of-in-shadow-root.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset="utf-8">

<title>CSS Selectors Invalidation: :nth-last-child(... of class) within shadow root</title>

<link rel="author" title="Zach Hoffman" href="mailto:zach@zrhoffman.net">

<link rel="author" title="Steinar H. Gunderson" href="mailto:sesse@chromium.org">

<link rel="match" href="nth-last-child-of-in-shadow-root-ref.html">

<link rel="help" href="https://drafts.csswg.org/selectors-4/#child-index">

<div id="host">

  <template shadowrootmode="open">

    <style>

      div:nth-last-child(even of .foo) {

        color: green;

    </style>

    <div class="foo">Should be green</div>

    <div class="foo">No green</div>

    <div class="foo" id="toggler">No green</div>

  </template>

</div>

<script>

  host.offsetTop;

  host.shadowRoot.getElementById("toggler").classList.toggle("foo");

</script>