34 lines
1.1 KiB
HTML
34 lines
1.1 KiB
HTML
<!doctype HTML>
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<html>
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<meta charset="utf8">
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<title>Content Visibility: slot moved after container is hidden</title>
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<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
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<link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility">
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<meta name="assert" content="ensure that hidden slotted element can be updated">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<body style="margin: 0">
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<div id=host>
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<input id=slotted style="margin: 0">
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<script>
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async_test((t) => {
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let container = document.createElement("div");
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container.innerHTML = "<slot></slot>";
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let shadowRoot = host.attachShadow({ mode: "open" });
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shadowRoot.innerHTML = "<style>.hidden { content-visibility: hidden }</style>";
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shadowRoot.appendChild(container);
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t.step(async () => {
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container.classList.add("hidden");
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requestAnimationFrame(() => {
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assert_equals(slotted.offsetTop, 0);
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container.innerHTML = "<div style='height: 20px;'></div><slot></slot>";
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t.done();
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});
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});
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});
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</script>
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