| <!DOCTYPE html> |
| <meta charset=utf-8> |
| <title>EventTarget.dispatchEvent: return value</title> |
| <link rel="help" href="https://dom.spec.whatwg.org/#concept-event-dispatch"> |
| <link rel="help" href="https://dom.spec.whatwg.org/#dom-event-preventdefault"> |
| <link rel="help" href="https://dom.spec.whatwg.org/#dom-event-defaultprevented"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <div id=log></div> |
| <table id="table" border="1" style="display: none"> |
| <tbody id="table-body"> |
| <tr id="table-row"> |
| <td id="table-cell">Shady Grove</td> |
| <td>Aeolian</td> |
| </tr> |
| <tr id="parent"> |
| <td id="target">Over the river, Charlie</td> |
| <td>Dorian</td> |
| </tr> |
| </tbody> |
| </table> |
| <script> |
| test(function() { |
| var event_type = "foo"; |
| var target = document.getElementById("target"); |
| var parent = document.getElementById("parent"); |
| var default_prevented; |
| |
| parent.addEventListener(event_type, function(e) {}, true); |
| target.addEventListener(event_type, function(e) { |
| evt.preventDefault(); |
| default_prevented = evt.defaultPrevented; |
| }, true); |
| target.addEventListener(event_type, function(e) {}, true); |
| |
| var evt = document.createEvent("Event"); |
| evt.initEvent(event_type, true, true); |
| |
| assert_true(parent.dispatchEvent(evt)); |
| assert_false(target.dispatchEvent(evt)); |
| assert_true(default_prevented); |
| }, "Return value of EventTarget.dispatchEvent."); |
| </script> |
