Teste

<!DOCTYPE HTML>
<html lang="en-US">
<head>
    <meta charset="UTF-8">
    <title></title>
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"> </script>
    <script type="text/javascript">
        $(function() {
            $(document).ready(function(){
                $("#botao").click(function(){
                    $.ajax({
                        type: "GET",
                        url: "ajax.js",
                        dataType: "script",
                        success: function(resultado){
                            alert(resultado);
                        }


                    });

                    return false;
                });
            });
        });
    </script>
</head>
<body>
    <button id="botao">aaaaaaaaaaaaaa</button>
</body>
</html>