<!DOCTYPE html>
<html lang="en-US">
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> </head>
<body>
<h1>jQuery isWindow() Method</h1>
<p>Is 'window' a window? <b id="myWin"></b></p>
<p>Is 'document' a window? <b id="myDoc"></b></p>
<script>
$(document).ready(function(){
$("#myWin").append("" +$.isWindow(window));
$("#myDoc").append("" +$.isWindow(document));
});
</script> </body>
</html>