27 lines
1.2 KiB
HTML
27 lines
1.2 KiB
HTML
<!doctype html>
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<meta charset="utf-8">
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<title>CSS Shadow Parts - Invalidation Change Part Name on pseudo</title>
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<link rel="help" href="https://drafts.csswg.org/css-shadow-parts/">
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<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
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<link rel="author" href="https://mozilla.org" title="Mozilla">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="support/shadow-helper.js"></script>
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<style>#c-e::part(partp)::before { color: red; }</style>
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<script>installCustomElement("custom-element", "custom-element-template");</script>
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<template id="custom-element-template">
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<style>span::before { content: ""; color: green; }</style>
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<span id="part" part="partp">This text</span>
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</template>
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The following text should be green:
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<div><custom-element id="c-e"></custom-element></div>
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<script>
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"use strict";
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test(function() {
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const part = getElementByShadowIds(document, ["c-e", "part"]);
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const before = getComputedStyle(part, "::before").color;
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part.setAttribute("part", "somethingelse");
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const after = getComputedStyle(part, "::before").color;
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assert_not_equals(before, after);
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}, "Part in selected host changed color");
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</script>
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