JavaScript Tutorial

jQuery.isWindow()

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>jQuery.isWindow demo</title>
  <script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
Is 'window' a window? <b></b>
<script>
    $( "b" ).append( "" + $.isWindow( window ) );
</script>
</body>
</html>