HTML Code

<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="utf-8">

  <title>file vs attribute</title>

  <style>

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

    #output { margin-top: 12px; padding: 12px; background: #e0f2fe; border: 1px solid #0284c7; }

  </style>

</head>

<body>

  <input type="file" id="a">

  <input type="file" id="b">

  <input type="text">

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

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

  <script>

    var pseudo = $("input:file").length;

    var attr = $('input[type="file"]').length;

    $("#output").html(":file → " + pseudo + "<br>[type=file] → " + attr);

  </script>

</body>

</html>

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:file vs input[type="file"] (Try It)