delete-after-justifyleft-in-closed-editable-dialog.html

Enable keyboard shortcuts

<!doctype html>

<html>

<head>

<meta charset="utf-8">

<script>

addEventListener("load", () => {

  const dialog = document.querySelector("dialog");

  dialog.showModal();

  dialog.close();

  document.execCommand("justifyLeft");

  document.execCommand("delete");

});

</script>

</head>

<body><dialog contenteditable>

</dialog></body>

</html>