<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Title</title>
<script src="https://code.jquery.com/jquery-3.7.0.min.js"></script>
<style>
</style>
</head>
<body>
<ul>
<li id = "content">HTML</li>
</ul>
</body>
<script>
//1.before
// $("#content").before(`<li>before</li>`);
//2. insertbefore
// $(`<li>intertbeforecontent</li>`).insertBefore("#content");
//3. after();
// $("#content").after(`<li>aftercontent</li>`);
//4.insertafter()
$(`<li>insertafter</li>`).insertAfter("#content");
</script>
</html>
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