Source code
Revision control
Copy as Markdown
Other Tools
Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-position/sticky/position-sticky-change-top.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html class='reftest-wait'>
<title>Sticky elements should invalidate when top/left/bottom/right changes</title>
<link rel="match" href="position-sticky-change-top-ref.html" />
<meta name="assert" content="This test checks that sticky elements are invalidated correctly when top/left/bottom/right change "/>
<script src="/common/reftest-wait.js"></script>
<script src="../resources/ref-rectangle.js"></script>
<!--
It is important for this test that the sticky element is viewport-bound, and
that multiple animation frames pass before changing the style.
-->
<style>
.marker {
background: red;
position: absolute;
top: 200px;
height: 100px;
width: 100px;
}
.sticky {
/* Triggers promotion without creating stacking context. */
backface-visibility: hidden;
background: green;
position: sticky;
top: 0;
width: 100px;
height: 100px;
}
.spacer {
height: 200vh;
}
</style>
<div class="marker"></div>
<div class="sticky"></div>
<div class="spacer"></div>
<script>
requestAnimationFrame(() => {
requestAnimationFrame(() => {
document.querySelector('.sticky').style.setProperty('top', '200px');
createIndicatorForStickyElements(document.querySelectorAll('.sticky'));
takeScreenshot();
});
});
</script>
</html>