test_bug1298970.html

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<!DOCTYPE HTML>

<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=1298970

-->

<head>

  <title>Test for Bug 1298970</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

</head>

<body>

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1298970">Mozilla Bug 1298970</a>

<p id="display"></p>

<div id="inner"></div>

<script class="testbody" type="text/javascript">

/** Test for Bug 1298970 **/

var target = document.getElementById("inner");

var event = new Event("test", { bubbles: true, cancelable: true });

is(event.cancelBubble, false, "Event.cancelBubble should be false by default");

target.addEventListener("test", (e) => {

  e.stopPropagation();

  is(e.cancelBubble, true, "Event.cancelBubble should be true after stopPropagation");

}, true);

target.dispatchEvent(event);

</script>

</body>

</html>