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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>View Timeline attached to an SVG graphics element</title>
</head>
<style type="text/css">
@keyframes bg {
from { background-color: blue; }
to { background-color: green; }
}
#colorize {
animation: bg steps(2, jump-none) both;
animation-timeline: view();
animation-range: contain;
background-color: red;
color: white;
}
.spacer {
height: 80vh;
}
</style>
<body>
<div class="spacer"></div>
<div id="content">
<p>Hello <span id="colorize">world</span></p>
</div>
<div class="spacer"></div>
</body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/web-animations/testcommon.js"></script>
<script>
promise_test(async t => {
const scroller = document.scrollingElement;
const anim = document.getAnimations()[0];
await anim.ready;
assert_equals(getComputedStyle(anim.effect.target)
.backgroundColor, 'rgb(0, 0, 255)');
scroller.scrollTop =
scroller.scrollHeight - scroller.clientHeight;
await waitForNextFrame();
assert_equals(getComputedStyle(anim.effect.target)
.backgroundColor, 'rgb(0, 128, 0)');
}, 'View timeline attached to SVG graphics element');
</script>
</html>
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