Javascript get windows username.
In this tutorial,I will explain how to get windows username using javascript.

Example1:Retrieve Windows Username with JavaScript Scripting
<html>
<head>
    <script language="javascript">
        function GetWindowsUserName()
        {
            var win = new ActiveXObject("WScript.Shell");
            var username=(win.ExpandEnvironmentStrings("%USERNAME%"));
alert(username);
        }
    </script>
</head>
<body OnLoad="GetWindowsUserName();">
</body>
</html>

Example2:Getting windows username in javascript


<script language="javascript" type="text/javascript">
var win = new ActiveXObject("WScript.Network");
alert (win.UserName);
</script>

Note:This code snippet will work only in Internet Explorer because Internet Explorer deals with ActiveX Controls.