<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script>
$(document).ready(function(){
    $("button").click(function(){
        var txt = "";
        txt += "Document width/height: " + $(document).width();
        txt += "x" + $(document).height() + "\n";
        txt += "Window width/height: " + $(window).width();
        txt += "x" + $(window).height();
        alert(txt);
    });
});
</script>
</head>
<body>

<button>Display dimensions of document and window</button>


&nbsp;

&nbsp;
<h2>এর জন্য কোড নিম্নে দেয়া হলো:</h2>

<hr />

<pre>&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
&lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"&gt;&lt;/script&gt;
&lt;script&gt;
$(document).ready(function(){
    $("button").click(function(){
        var txt = "";
        txt += "Document width/height: " + $(document).width();
        txt += "x" + $(document).height() + "\n";
        txt += "Window width/height: " + $(window).width();
        txt += "x" + $(window).height();
        alert(txt);
    });
});
&lt;/script&gt;
&lt;/head&gt;
&lt;body&gt;

&lt;button&gt;Display dimensions of document and window&lt;/button&gt;

&lt;/body&gt;
&lt;/html&gt;</pre>

<hr />

&nbsp;

&nbsp;
</body>
</html>