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38 lines
1.2 KiB
HTML
38 lines
1.2 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8" />
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<title>Page Visibility API is Read Only</title>
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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 type="text/javascript" src="resources/pagevistestharness.js"></script>
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<script type="text/javascript">
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setup({ explicit_done: true });
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function onload_test()
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{
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//check for feature definition first before attempting to overwrite
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pv_test();
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//Check document.hidden
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document.hidden = "new value";
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test_true(document.hidden !== "new value", 'document.hidden is read only.');
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//Check document.visibilityState
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document.visibilityState = "new value";
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test_true(document.visibilityState !== "new value",
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"document.visibilityState is read only.");
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done();
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}
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</script>
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</head>
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<body onload="onload_test();">
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<h1>Description</h1>
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<p>This test validates that the Page Visibility attributes are read only.</p>
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<div id="log"></div>
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</body>
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</html>
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