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Per the CSSOM specification, throw a NotFoundError DOMException when the specified medium is not found in the collection. Invalid input that fails to parse continues to return silently per step 2.
32 lines
877 B
HTML
32 lines
877 B
HTML
<!DOCTYPE html>
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<style>
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@media screen, print { body { color: red; } }
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</style>
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<script src="../include.js"></script>
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<script>
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test(() => {
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let sheet = document.styleSheets[0];
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let mediaList = sheet.cssRules[0].media;
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println(`Initial: ${mediaList.mediaText}`);
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println(`Length: ${mediaList.length}`);
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mediaList.deleteMedium("print");
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println(`After removing print: ${mediaList.mediaText}`);
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println(`Length: ${mediaList.length}`);
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try {
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mediaList.deleteMedium("print");
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} catch (e) {
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println(`Remove nonexistent throws: ${e.name}`);
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}
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println(`Unchanged: ${mediaList.mediaText}`);
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try {
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mediaList.deleteMedium("not-a-real-type");
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} catch (e) {
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println(`Remove unknown throws: ${e.name}`);
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}
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});
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</script>
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