wpt/css/css-highlight-api/painting/custom-highlight-painting-002.html at master · web-platform-tests/wpt · GitHub

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<!DOCTYPE html>
<meta charset="UTF-8">
<title>CSS Highlight API Test: </title>
<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/">
<link rel="match" href="custom-highlight-painting-002-ref.html">
<meta name="assert" value="Latest Highlight added to CSS.highlights has higher priority than the previous ones if there were no priorities explicitly set">
<style>
  div::highlight(bar) {
    color: red;
  }
  div::highlight(foo) {
    color: green;
  }
</style>
<body><div>abc</div>
<script>
  let div = document.body.firstChild;
  let r = new Range();
  r.setStart(div, 0);
  r.setEnd(div, 1);
  let h = new Highlight(r);
  CSS.highlights.set('foo', h);
  CSS.highlights.set('bar', h);
</script>