Source code
Revision control
Copy as Markdown
Other Tools
Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-highlight-api/painting/custom-highlight-painting-two-highlights-same-range-001.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html class="reftest-wait">
<meta charset="UTF-8">
<title>CSS Highlight API Test: highlight registered after a rendering update over an already-highlighted range</title>
<link rel="match" href="custom-highlight-painting-two-highlights-same-range-001-ref.html">
<meta name="assert" value="A highlight registered after a rendering update is painted even when its range is already used by a previously registered highlight.">
<script src="/common/reftest-wait.js"></script>
<style>
::highlight(highlight-a) {
background-color: red;
}
::highlight(highlight-b) {
background-color: lime;
text-decoration-line: underline;
}
</style>
<body><p id="text">This text is highlighted by two CSS Highlights.</p>
<script>
/*
highlight-b is registered after a rendering update has already resolved the
positions of highlight-a, which shares its range. highlight-b has to be
painted over highlight-a, so no red may be visible.
*/
const range = new Range();
range.selectNodeContents(document.getElementById("text"));
const highlightA = new Highlight(range);
const highlightB = new Highlight(range);
CSS.highlights.set("highlight-a", highlightA);
requestAnimationFrame(() => requestAnimationFrame(() => {
CSS.highlights.set("highlight-b", highlightB);
requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
}));
</script>
</html>