A small collection of code for capturing client side javascript errors.

Error Controller

public class ErrorController : Controller
    {
        [HttpPost]
        public JsonResult Record(ErrorInputModel model)
        {
            var ex  = new ClientErrorException(model.ToString());

            var signal = ErrorSignal.FromCurrentContext();
            signal.Raise(ex);

            var result = new JsonResult {Data = JsonConvert.SerializeObject(new {Success = true})};
            return result;
        }
    }

    public class ErrorInputModel
    {
        public string ErrorText { get; set; }
        public string Url { get; set; }
        public int? LineNumber { get; set; }

        public override string ToString()
        {
            return string.Format("Error Text: {0}, Url: {1}, Line Number: {2}", this.ErrorText, this.Url,
                                 (LineNumber.HasValue ? LineNumber.Value.ToString() : "Unkown"));
        }
    }

    public class ClientErrorException : Exception
    {
        public ClientErrorException(string message) : base(message){}
    }