Razor视图下服务器代码给Javascript变量赋值

namespace Razor.Controllers
{
    public class JSController : Controller
    {
        public ActionResult Index()
        {
            List<string> FriendsId = new List<string> { "S1", "S2", "S3", "S4" };
            ViewBag.FriendsId = FriendsId;
            return View();
        }
    }
}

@{
    ViewBag.Title = "Index";
}
<h2>Index</h2>
<script type="text/javascript">
var array = new Array();
@{   
 string message=""; 
}
@for (int i = 0; i < 3; i++) {
    message += "array[" + i + "]=\"" + ViewBag.FriendsId[i] + "\";";
}
@MvcHtmlString.Create(message);
alert(array[0]);
</script>