How to call URL action in MVC with javascript function?

Question

I´m trying to render url action with javascript in an MVC project. I capture an event on my page which calls this function but I´m not sure how to call this certain URL.

Can anyone help me please? :)

function onDropDownChange(e) {
    var url = '/Home/Index/' + e.value;
    //What now...?
}

-----------Edited-----------------------

Here´s my controller action:

    public ActionResult Index(int? id)
    {
        var tmpToday = DateTime.Now;
        var today = new DateTime(tmpToday.Year, tmpToday.Month, tmpToday.Day, 0, 0, 0);

        if (id != null)
        {
            var num = id.GetValueOrDefault();
            var rentableUnits = new List<Unit>();
            _unitLogic.GetAllRentableUnitsByArea(num, rentableUnits);

            var allAvailabilities = new ShowAvailability[rentableUnits.Count];

            for (int i = 0; i < rentableUnits.Count; i++)
            {
                var sTime = GetFirstDayOfMonth(today);
                var eTime = GetLastDayOfMonth(today);
                allAvailabilities[i] = new ShowAvailability(sTime, eTime.AddHours(23.0).AddMinutes(59.0), rentableUnits);
                today = today.AddMonths(1);
            }

            var showAvailability = new List<ShowAvailability>(allAvailabilities);

            return View(new HomeFormViewModel(showAvailability));
        }
        else
        {
            var allAvailabilities = new ShowAvailability[12];

            for (int i = 0; i < 12; i++)
            {
                var sTime = GetFirstDayOfMonth(today);
                var eTime = GetLastDayOfMonth(today);
                allAvailabilities[i] = new ShowAvailability(sTime, eTime.AddHours(23.0).AddMinutes(59.0));
                today = today.AddMonths(1);
            }

            var showAvailability = new List<ShowAvailability>(allAvailabilities);

            return View(new HomeFormViewModel(showAvailability));
        }
    }

#

I´m using Telerik extension for my DropDownList which fires the javascript function, this is in fact a Razor View:

 @(Html.Telerik().DropDownList()
     .Name("DropDownList")
     .Items(area =>
         {
             area.Add().Text("Öll svæði").Value("0").Selected(true);
             foreach (Unit a in Model.Areas)
                {
                     area.Add().Text(a.Name).Value(a.UnitID.ToString());
                }
         })
     .HtmlAttributes(new { style = "width: 130px;" })
     .ClientEvents(clev => clev.OnChange("onDropDownChange"))
     )

Here´s the script:

function onDropDownChange(e) {
    var url = '/Home/Index/' + e.value;
    $.ajax({
            type: "GET",
            url: url,
            data: {},
            dataType: "html"
        });
}

Answer 1

Try using the following on the JavaScript side:

window.location.href = '@Url.Action("Index", "Controller")';

If you want to pass parameters to the @Url.Action, you can do this:

var reportDate = $("#inputDateId").val();//parameter
var url = '@Url.Action("Index", "Controller", new {dateRequested = "findme"})';
window.location.href = url.replace('findme', reportDate);