28.html

<html>
<head>
    </head>
    <body>
    
    <button onclick="window1()">Get Outer browser area</button>
    
    <button onclick="window2()">Get Inner browser area</button>
    
    <button onclick="history1()">Get History browser area</button>
        
        <script type="text/javascript">
                function window2()
                {
                alert("Height = "+window.innerHeight+"& Width = "+window.innerWidth);
                }
            function window1()
                {
                alert("Height = "+window.outerHeight+"& Width = "+window.outerWidth);
                }
            
            function history1()
                {
                alert("History length = "+window.History.length);
                }
            
        </script>
            
            
            
            
    </body>
</html>