File: custom-highlight-painting-prioritization-003.html

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<!DOCTYPE html>
<meta charset="UTF-8">
<title>CSS Highlight API Test: Non-conflicting attributes</title>
<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/#priorities">
<link rel="match" href="custom-highlight-painting-prioritization-003-ref.html">
<meta name="assert" value="Non-conflicting attributes for highlights will be painted even if lower priority">
<style>
    ::highlight(highlight-1) {
        background-color: blue;
        color: white;
    }
    ::highlight(highlight-2) {
        background-color: yellow;
    }
</style>
<body>
    <p>This is an example of two overlapping highlights</p>
</body>
<script>
    const text = document.querySelector("p").firstChild;

    // Create two overlapping highlights
    const range1 = new Range();
    range1.setStart(text, 5);
    range1.setEnd(text, 10);

    const range2 = new Range();
    range2.setStart(text, 10);
    range2.setEnd(text, 18);

    const highlight1 = new Highlight(range1);
    const highlight2 = new Highlight(range2);

    CSS.highlights.set("highlight-1", highlight1);
    CSS.highlights.set("highlight-2", highlight2);
</script>