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- This WPT test may be referenced by the following Test IDs:
- /css/css-display/display-contents-blockify-dynamic.html - WPT Dashboard Interop Dashboard
<!doctype html>
<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
<link rel="author" href="mailto:obrufau@igalia.com" title="Oriol Brufau">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
.grid { display: grid }
</style>
<div style="display: grid">
<span id="grid-child">
<span></span>
</div>
</div>
<script>
function display(el) {
return getComputedStyle(el).display;
}
test(function() {
let child = document.getElementById("grid-child");
let grandChild = child.firstElementChild;
assert_equals(display(child), "block", "Grid child should get blockified");
assert_equals(display(grandChild), "inline", "Grid grand-child should not get initially blockified");
child.style.display = "contents";
assert_equals(display(child), "contents", "No reason for it not to become display: contents");
assert_equals(display(grandChild), "block", "Grid grand-child with display: contents parent should get blockified");
child.style.display = "";
assert_equals(display(child), "block", "Grid child should get blockified");
assert_equals(display(grandChild), "inline", "Grid grand-child should get un-blockified when its parent's display stops being `contents`");
}, "Dynamic changes to `display` causing blockification of children are handled correctly");
</script>