34 lines
1.3 KiB
HTML
34 lines
1.3 KiB
HTML
<!doctype html>
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<meta charset="utf-8">
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<title>CSSStyleDeclaration index getter v. attributes</title>
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<link rel="help" href="https://drafts.csswg.org/cssom/#the-cssstyledeclaration-interface">
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<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/2529">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<div id="testElement"></div>
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<script>
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/* per spec, the indexed getter gives all supported longhand properties, whereas
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attributes are created for all supported properties; this implies the indexed
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getter gives a subset of the attributes */
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const decl = window.getComputedStyle(document.getElementById("testElement"));
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const declItems = Array.from(decl).sort();
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const shorthands = ['border-top', 'border-right', 'border-bottom', 'border-left', 'border', 'font'];
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const non_shorthands = ['margin-top', 'font-size', 'max-width', 'width'];
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for (const prop of shorthands) {
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test(() => {
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assert_true(prop in decl, "getComputedStyle attribute");
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assert_false(declItems.includes(prop), "getComputedStyle indexed getter");
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}, prop);
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}
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for (const prop of non_shorthands) {
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test(() => {
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assert_true(prop in decl, "getComputedStyle attribute");
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assert_true(declItems.includes(prop), "getComputedStyle indexed getter");
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}, prop);
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}
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</script>
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