How to call a webapi using an absolute URL?

$('#btnSubmit').click(function (e) {
    $("#getResult").val("");
    debugger;
    var lon = getControlValue('txt_Lon');
    var lat = getControlValue('txt_Lat');
    var server_ = 'http://myServer/';
    server_ = server_ + "api/myController/GetLatlon?lon=" + lon + "&lat=" + lat;

    $.ajax({
        contentType: 'application/json',
        type: "GET",
        url: server_,
        success: function (result, textStatus, jqXHR) {
            debugger;
            setTextBoxValue('getResult', result.eligible);
        },
        error: function (jqXHR, textStatus, errorThrown) {
            $("#getResult").val(jqXHR.statusText);
        }
    });
});