| Quellcodebibliothek Statistik Leitseite products/Sources/formale Sprachen/C/Firefox/testing/web-platform/tests/element-timing/ (Firefox Browser Version 153.0.1©) Datei vom 27.6.2026 mit Größe 1 kB |
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Quelle object.htmlSprache: HTML |
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<!DOCTYPE HTML> <head> <meta charset=utf-8> <title>Element Timing: observe an object containing an image</title> <style> body { margin: 20px; } </style> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <script src="resources/element-timing-helpers.js"></script> <script> async_test(function (t) { let beforeRender; let object; assert_implements(window.PerformanceElementTiming, "PerformanceElementTiming is not const observer = new PerformanceObserver( t.step_func_done(function(entryList) { assert_equals(entryList.getEntries().length, 1); const entry = entryList.getEntries()[0]; const pathname = window.location.origin + '/images/green-100x50.png'; checkElement(entry, pathname, 'my_object', 'rectangle', beforeRender, object); checkRect(entry, [20, 120, 20, 70]); checkNaturalSize(entry, 100, 50); }) ); observer.observe({entryTypes: ['element']}); // We add the object during onload to be sure that the observer is // registered in time for it to observe the element timing. window.onload = () => { // Add object of width equal to 100 and height equal to 50. object = document.createElement('object'); object.type = 'image/png'; object.id = 'rectangle'; object.data = '/images/green-100x50.png'; object.setAttribute('elementtiming', 'my_object'); document.body.appendChild(object); beforeRender = performance.now(); }; }, 'Element with an object containing an image.'); </script> </head>
¤ Dauer der Verarbeitung: 0.11 Sekunden (vorverarbeitet am 2026-08-25) ¤*© Formatika GbR, Deutschland |
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2026-08-25