| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>EventTarget.addEventListener</title> |
| <link rel="author" title="Ms2ger" href="mailto:Ms2ger@gmail.com"> |
| <link rel="help" href="https://dom.spec.whatwg.org/#dom-eventtarget-addeventlistener"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <div id="log"></div> |
| <script> |
| // Step 1. |
| test(function() { |
| assert_equals(document.addEventListener("x", null, false), undefined); |
| assert_equals(document.addEventListener("x", null, true), undefined); |
| assert_equals(document.addEventListener("x", null), undefined); |
| }, "Adding a null event listener should succeed"); |
| </script> |
