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Test Info: Warnings
- This test has a WPT meta file that expects 1 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /css/css-anchor-position/position-try-dynamic.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<title>CSS Anchor Positioning Test: Dynamically change position via position-try-fallbacks property</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
body { margin: 0; }
@position-try --fallback1 {
left: anchor(--a1 right);
}
#anchor {
anchor-name: --a1;
width: 100px;
height: 100px;
}
#anchored {
position: absolute;
left: 999999px; /* Force fallback */
width: 100px;
height: 100px;
}
</style>
<div id="anchor"></div>
<div id="anchored"></div>
<script>
test(() => {
assert_equals(anchored.offsetLeft, 999999);
}, "Initial static left position is 0");
test(() => {
anchored.style.positionTryFallbacks = "--fallback1";
assert_equals(anchored.offsetLeft, 100);
}, "Left position set to right edge of anchor with @position-try");
</script>