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37 lines
1.2 KiB
HTML
37 lines
1.2 KiB
HTML
<!DOCTYPE HTML>
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<meta charset=utf-8>
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<title>Element Timing: observe element with background image</title>
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<body>
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<style>
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body {
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margin: 0;
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}
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#target {
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width: 100px;
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height: 50px;
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background-image: url('/images/black-rectangle.png');
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}
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</style>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="resources/element-timing-helpers.js"></script>
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<script>
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let beforeRender = performance.now();
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async_test(function (t) {
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const observer = new PerformanceObserver(
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t.step_func_done(function(entryList) {
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assert_equals(entryList.getEntries().length, 1);
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const entry = entryList.getEntries()[0];
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const index = window.location.href.lastIndexOf('/');
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const pathname = window.location.href.substring(0, index - 14) +
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'images/black-rectangle.png';
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checkElement(entry, pathname, 'my_div', 'target', beforeRender);
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checkRect(entry, [0, 100, 0, 50]);
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checkNaturalSize(entry, 100, 50);
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})
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);
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observer.observe({entryTypes: ['element']});
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}, 'Element with elementtiming attribute and background image is observable.');
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</script>
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<div id='target' elementtiming='my_div'></div>
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</body>
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