使用ajax传递及接收数据

前端代码：

    <input id="txtNum1" name="txtNum1" type="text" width="130" />
    <select id="fh" name="fh">
        <option id="jia" value="+">+</option>
        <option id="jian" value="-">-</option>
        <option id="chen" value="*">*</option>
        <option id="chu" value="/">/</option>
    </select>
    <input id="txtNum2" name="txtNum2" type="text" width="130" />
    <input id="btnSubmit" type="button" value="=" />
    <input id="txtResult" type="text" width="130" />

@section scripts{
    <script>
        $(function () {
            $("#btnSubmit").bind("click", function () {
                debugger
                $.ajax({
                    @*url: '@Url.Action("JS")',*@
                    url: "/Home/JS",
                    data: {
                        "num1": $("#txtNum1").val(),
                        "num2" : $("#txtNum2").val(),
                        "fh":$("#fh").val()
                    },
                    dataType: "json",
                    type: "post",
                    success: function (data){
                        $("#txtResult").val(data.Result);
                    },
                    error: function (e, a){
                        alert(a);
                    }
                })
            })
        })
    </script>
}

后台action代码：

[HttpPost]
        public JsonResult JS(string num1, string num2,string fh)
        {
            int result = 0;
            try
            {
                switch (fh)
                {
                    case "+":
                        result = Convert.ToInt32(num1) + Convert.ToInt32(num2); break;
                    case "-":
                        result = Convert.ToInt32(num1) - Convert.ToInt32(num2); break;
                    case "*":
                        result = Convert.ToInt32(num1) * Convert.ToInt32(num2); break;
                    case "/":
                        result = Convert.ToInt32(num1) / Convert.ToInt32(num2); break;
                    default:
                        break;
                }
            }
            catch (Exception ex)
            {
                log.Error("Error", new Exception(ex.Message));
                return Json("");
            }
            var data = new { Result = result };
            return Json(data);
        }