Microsoft Ajax

<script type="text/javascript" src="/script/MicrosoftAjax.js"></script>





<script type="text/javascript">

    function onclickBtn1()
    {
        var wRequest = new Sys.Net.WebRequest();
        wRequest.set_url("/test.aspx?id=3");
        wRequest.add_completed(
            function(executor, eventArgs)
            {
                alert(executor.get_responseData());
             });
        wRequest.invoke();
    }
</script>