HTML Code

<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="utf-8">

  <title>insertBefore label demo</title>

  <style>

    body { font-family: sans-serif; padding: 16px; max-width: 420px; }

    label { display: block; margin: 8px 0 4px; font-weight: 600; }

    input { padding: 8px; width: 100%; box-sizing: border-box; }

    #email-wrap { margin-top: 8px; }

    button { margin-top: 12px; padding: 10px 16px; background: #2563eb; color: #fff; border: none; border-radius: 6px; cursor: pointer; }

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

  </style>

</head>

<body>

  <div id="email-wrap">

    <input type="email" id="email" placeholder="you@example.com">

  </div>

  <button type="button">Insert label before field</button>

  <p id="hint">Build label, then insertBefore #email-wrap.</p>

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

  <script>

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

      $("label[for='email']").remove();

      $("<label for='email'>").text("Email address").insertBefore("#email-wrap");

      $("#hint").text("Label inserted as sibling before #email-wrap.");

    });

  </script>

</body>

</html>

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jQuery .insertBefore() — build then insert label (Try It)