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Test Info:

  • This WPT test may be referenced by the following Test IDs:
<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/utils.js"></script>
<div id="container">
<div id="target"></div>
</div>
<script>
test(() => {
CSS.registerProperty({
name: "--my-length",
syntax: "<length>",
inherits: true,
initialValue: "0px"
});
target.style.marginLeft = "var(--my-length)";
const duration = 1000;
const animation = container.animate({ "--my-length": "100px" }, duration);
animation.pause();
animation.currentTime = duration / 4;
assert_equals(getComputedStyle(target).marginLeft, "25px");
}, "Animating an inherited CSS variable on a parent is reflected on a standard property using that variable as a value on a child");
</script>