<!DOCTYPE HTML> <meta charset=utf-8> <title>ElementTiming: element is only exposed for fully active documents.</title> <body> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <iframe src="resources/iframe-stores-entry.html" id="ifr"></iframe> <script> let t = async_test('Only expose element attribute for fully active documents'); t.step(() => { assert_implements(window.PerformanceElementTiming, "PerformanceElementTiming is not implemented"); }); window.triggerTest = t.step_func_done(elementEntry => { assert_not_equals(elementEntry.element, null); const iframe = document.getElementById('ifr'); iframe.remove(); assert_equals(elementEntry.element, null); }); </script> </body>