HTML Code

<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="utf-8">

  <title>insertBefore move h2 demo</title>

  <style>

    body { font-family: sans-serif; padding: 16px; max-width: 520px; }

    h2 { color: #1d4ed8; margin: 8px 0; }

    .container { background: #e0e7ff; padding: 12px; border-radius: 6px; margin: 10px 0; }

    button { margin-top: 12px; padding: 10px 16px; background: #7c3aed; color: #fff; border: none; border-radius: 6px; cursor: pointer; }

    #hint { color: #64748b; font-size: 14px; margin-top: 10px; }

  </style>

</head>

<body>

  <div class="container">Hello<br>Goodbye</div>

  <h2>Greetings</h2>

  <button type="button">Move h2 before .container</button>

  <p id="hint">h2 moves from bottom to precede .container.</p>

  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>

  <script>

    $("button").on("click", function() {

      $("h2").insertBefore($(".container"));

      $("#hint").text("h2 relocated as sibling before .container.");

    });

  </script>

</body>

</html>

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jQuery .insertBefore() — move h2 before container (Try It)