46 lines
1.4 KiB
HTML
46 lines
1.4 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>CSS Transitions Test: Transitioning before load event</title>
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<meta name="assert" content="Test checks that transitions are run even before the load event fires">
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<!-- NOTE: This test covers unspecified behavior and should probably be
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removed. It this behavior *were* specified, it would probably be
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specified here: -->
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<link rel="help" title="5. Transition Events" href="https://drafts.csswg.org/css-transitions/#starting">
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<link rel="author" title="Rodney Rehm" href="http://rodneyrehm.de/en/">
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<script src="/resources/testharness.js" type="text/javascript"></script>
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<script src="/resources/testharnessreport.js" type="text/javascript"></script>
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<script src="./support/helper.js" type="text/javascript"></script>
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</head>
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<body>
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<script>
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// Make sure a transition can run before the load event fires.
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let loadEventFired = false;
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window.addEventListener('load', () => {
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loadEventFired = true;
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}, false);
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async_test(t => {
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const div = addDiv(t, { style: 'transition: height .01s linear; ' +
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'height: 1px' });
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getComputedStyle(div).height;
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div.style.height = '100px';
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div.addEventListener('transitionrun', t.step_func_done(() => {
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assert_false(
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loadEventFired,
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'load event should not have fired yet'
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);
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document.getElementById('cat').src = '';
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}));
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});
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</script>
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<img src="support/cat.png?pipe=trickle(d1)" id="cat">
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</body>
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</html>
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