Iam getting Handling JSON objects alone in web page,my script file is not working

Iam getting Handling JSON objects alone in web page,my script file is not working

My index file(index.html)

<!DOCTYPE html>
<html>
<head>
    <title></title>
    <script type="text/javascript" src="js/jquery-1.8.3.min.js"></script>
    <script type="text/javascript" src="js/script.js"></script>

</head>
<body>
<p>Handling JSON Objects</p>
<span id="acc-list"></span>
</body>
</html>

My Script file(script.js)
$(document).ready(function () {
    alert("welcome");
    var data_url = "data/data.json";
    $.ajax({
        type: "GET",
        url: data_url,
        dataType: "json",
        success: function (msg) {
            var data = msg;
            var mesge = $(this).text(message.name);
            $("#acc-list").html(mesge);

        },

        error: function (err) {
            console.log(err);
        }

    })

});

my JSON (data.json)
{
    "Employee": [
        {
            "Firstname": "apple",
            "Lastname": "fruits"
        },
        {
            "City" : "anna nagar",
            "District" : "chennai"
        }
    ]
}