HTML Code

<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="utf-8">

  <title>has vs contains</title>

  <style>

    body { font-family: sans-serif; padding: 16px; max-width: 28rem; }

    div { padding: 10px; margin: 6px 0; border: 1px solid #e2e8f0; border-radius: 6px; }

    #output { margin-top: 12px; padding: 12px; background: #fef3c7; font-family: monospace; white-space: pre-wrap; }

  </style>

</head>

<body>

  <div><p>Hello in a paragraph</p></div>

  <div>Hello again! (with no paragraph)</div>

  <div id="output"></div>

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

  <script>

    $("#output").text(

      ":has(p) → " + $("div:has(p)").length + "\n:contains('Hello') → " + $("div:contains('Hello')").length

    );

    $("div:has(p)").css("outline", "3px solid #2563eb");

  </script>

</body>

</html>

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:has(p) vs :contains('Hello') (Try It)