29 lines
1.2 KiB
HTML
29 lines
1.2 KiB
HTML
<!doctype html>
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<title>CSS Test: CSSStyleSheet modifications after removal</title>
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<link rel="help" href="https://drafts.csswg.org/cssom/#the-cssstylesheet-interface">
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<link rel="help" href="https://drafts.csswg.org/cssom/#the-cssrule-interface">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<iframe id="frm"></iframe>
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<iframe id="frm2"></iframe>
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<script>
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test(() => {
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frm.contentDocument.body.innerHTML = "<style>div {color:red}</style>";
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let sheet = frm.contentDocument.querySelector("style").sheet;
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assert_equals(sheet.cssRules.length, 1);
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frm.remove();
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document.body.offsetTop;
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sheet.insertRule("span {color: green}", 0);
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assert_equals(sheet.cssRules.length, 2);
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}, "Modify sheet from removed iframe");
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test(() => {
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frm2.contentWindow.eval("let sheet = new CSSStyleSheet(); document.adoptedStyleSheets = [ sheet ];");
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let sheet = frm2.contentDocument.adoptedStyleSheets[0];
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assert_equals(sheet.cssRules.length, 0);
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frm2.remove();
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document.body.offsetTop;
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sheet.insertRule("span {color: green}", 0);
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assert_equals(sheet.cssRules.length, 1);
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}, "Modify constructed sheet from removed iframe");
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</script>
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