File: event-handler-non-content-document-idl-attributes.html

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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<link rel="help" href="https://html.spec.whatwg.org/multipage/webappapis.html#handler-onreadystatechange">
<link rel="help" href="https://html.spec.whatwg.org/multipage/webappapis.html#handler-onvisibilitychange">
<script>
  var handlerExecuted = false;
  ["div", "body", "frameset"].forEach(elementName => {
    ["readystatechange", "visibilitychange"].forEach(eventName => {
      let attributeName = `on${eventName}`;
      test(t => {
        t.add_cleanup(_ => { handlerExecuted = false });
        let element = document.createElement(elementName);
        element.setAttribute(attributeName, "handlerExecuted = true;")
        element.dispatchEvent(new Event(eventName, {bubbles: false}));
        assert_false(handlerExecuted);
      },`${elementName}.on${eventName} is not an event handler content attribute`);
    });
  });
</script>