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<!DOCTYPE html>
<html>
<head>
<style>
dialog {
height: 150px;
width: 150px;
}
::backdrop {
display: none;
}
.red {
background-color: red;
top: 200px;
}
#bottomDialog {
background-color: blue;
top: 50px;
}
#topDialog {
background-color: green;
top: 100px;
left: 50px;
}
</style>
</head>
<body>
This tests top layer element stacking order after dynamically calling show/close and removal from the DOM tree.
The test passes if you see a green rectangle stacked on top of a blue rectangle, and see no red rectangles.
<dialog id="topDialog"></dialog>
<dialog id="bottomDialog"></dialog>
<dialog id="removedDialog" class="red">
<dialog id="removedDialogChild" class="red"></dialog>
</dialog>
<script>
document.getElementById('topDialog').showModal();
var removedDialog = document.getElementById('removedDialog');
removedDialog.showModal();
document.getElementById('bottomDialog').showModal();
document.getElementById('removedDialogChild').showModal();
removedDialog.parentNode.removeChild(removedDialog);
document.getElementById('topDialog').close();
document.getElementById('topDialog').showModal();
</script>
</body>
</html>
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