event-global-is-still-set-when-reporting-exception-onerror.html (1721B)
1 <!DOCTYPE html> 2 <meta charset="utf-8"> 3 <title>window.onerror handler restores window.event after it reports an exception</title> 4 <link rel="help" href="https://dom.spec.whatwg.org/#concept-event-listener-inner-invoke"> 5 <script src="/resources/testharness.js"></script> 6 <script src="/resources/testharnessreport.js"></script> 7 8 <body> 9 <iframe src="resources/empty-document.html"></iframe> 10 <iframe src="resources/empty-document.html"></iframe> 11 12 <script> 13 setup({ allow_uncaught_exception: true }); 14 15 async_test(t => { 16 window.onload = t.step_func_done(onLoadEvent => { 17 frames[0].onerror = new frames[1].Function(` 18 top.eventDuringSecondOnError = top.window.event; 19 top.frames[0].eventDuringSecondOnError = top.frames[0].event; 20 top.frames[1].eventDuringSecondOnError = top.frames[1].event; 21 `); 22 23 window.onerror = new frames[0].Function(` 24 top.eventDuringFirstOnError = top.window.event; 25 top.frames[0].eventDuringFirstOnError = top.frames[0].event; 26 top.frames[1].eventDuringFirstOnError = top.frames[1].event; 27 28 foo; // cause second onerror 29 `); 30 31 const myEvent = new ErrorEvent("error", { error: new Error("myError") }); 32 window.dispatchEvent(myEvent); 33 34 assert_equals(top.eventDuringFirstOnError, onLoadEvent); 35 assert_equals(frames[0].eventDuringFirstOnError, myEvent); 36 assert_equals(frames[1].eventDuringFirstOnError, undefined); 37 38 assert_equals(top.eventDuringSecondOnError, onLoadEvent); 39 assert_equals(frames[0].eventDuringSecondOnError, myEvent); 40 assert_equals(frames[1].eventDuringSecondOnError.error.name, "ReferenceError"); 41 }); 42 }); 43 </script>