| <!DOCTYPE HTML> |
| <meta charset=utf-8> |
| <title>Element Timing: entry does not change its id or identifier value</title> |
| <body> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="resources/element-timing-helpers.js"></script> |
| <p elementtiming='my_identifier' id='my_id'>Text</p> |
| <script> |
| async_test(function (t) { |
| assert_implements(window.PerformanceElementTiming, "PerformanceElementTiming is not implemented"); |
| const observer = new PerformanceObserver( |
| t.step_func_done(function(entryList) { |
| assert_equals(entryList.getEntries().length, 1); |
| const entry = entryList.getEntries()[0]; |
| assert_equals(entry.id, 'my_id'); |
| assert_equals(entry.identifier, 'my_identifier'); |
| const element = document.getElementById('my_id'); |
| element.id = 'other_id'; |
| element.setAttribute('elementtiming', 'other_identifier'); |
| assert_equals(entry.id, 'my_id'); |
| assert_equals(entry.identifier, 'my_identifier'); |
| }) |
| ); |
| observer.observe({type: 'element', buffered: true}); |
| }, 'PerformanceElementTiming id and identifier do not change when Element changes.'); |
| </script> |
| </body> |