JS复制文件(转)

<script type="text/javascript">
    var fso, f;   
    function copyFile()
    {   
        fso = new ActiveXObject("Scripting.FileSystemObject");   
        f = fso.CreateTextFile("c://testfile.txt", true);   
        f.WriteLine("This is a test.");   
        f.Close();   
        f = fso.GetFile("c://aaa//111.txt");   
        f.Copy("c://bbb//111.txt");   
    }  
</script>