results.html

<!DOCTYPE html>
<html>
<head>
    <title>Search Results</title>

    <script src="//code.jquery.com/jquery-1.12.0.min.js"></script>
    <script type="text/javascript">
      $(document).ready(function () {
        var query = new URL(window.location.href).searchParams.get('query');
        $("#query").text(query);
        if (query === 'happiness') {
          $('#many-results').show();
        } else {
          $('#no-results').show();
        }
      });
    </script>
    <style>
        .dynamic-content {
            display: none;
        }
    </style>
</head>
<body>

<div align="middle">
    <p>
        Search for <strong><span id="query"></span></strong>
    </p>
    <p id="no-results" class="dynamic-content">
        No results... :-(
    </p>
    <p id="many-results" class="dynamic-content">
        Plenty of results! :-)
    </p>
</div>

</body>
</html>