为.val（）获取空

I have inputs and selects. For some reason, some of them are giving me a null. Here is the code:

<script type="text/javascript">
$(function () {
    $('#add').on('click', function () {
        $('table').append('<tr>' +
                '<td><button class=\'save\'>Save</button></td>' +
                '<td><input name=\'name\' id=\'companyName\' /></td>' +
                '<td><input name=\'currency\' id=\'currency\' /></td>' +
                '<td><input name=\'ISOCode\' id=\'ISOCode\' /></td>' +
                '<td><input name=\'CalcDeadLine\' id=\'CalcDeadLine\' /></td>' +
                '<td><select name=\'mealAlgorithm\' id=\'mealAlgorithm\'><option value="True">Yes</option><option value="False">No</option></select></td>' +
                '<td><input name=\'breakfast\' id=\'breakfast\' /></td>' +
                '<td><input name=\'halfBoard\' id=\'halfBoard\' /></td>' +
                '<td><input name=\'fullBoard\' id=\'fullBoard\' /></td>' +
                '<td><input name=\'adminID\' id=\'adminID\' /></td>' +
                '<td><input name=\'language\' id=\'language\' /></td>' +
                '<td><input name=\'approvalcid\' id=\'cid\' /></td>' +
                '<td><select name=\'useSMS\' id=\'useSMS\'><option value="True">Yes</option><option value="False">No</option></select></td>' +
                '<td><select name=\'active\' id=\'active\'><option value="True">Yes</option><option value="False">No</option></select></td>');

        $('#add').hide();
    })
});

$(".save").live("click", function () {
    var name = $("#companyName").val();
    var currency = $("#currency").val();
    var isoCode = $("#ISOCode").val();
    var calcDeadLine = $("#CalcDeadLine").val();
    var mealAlgorithm = $("#mealAlgorithm").val();
    var noMeal = 111;
    var breakfast = $("#breakfast").val();
    var halfBoard = $("#halfBoard").val();
    var fullBoard = $("#fullBoard").val();
    var adminID = $("#adminID").val();
    var language = $("#language").val();
    var cid = $("#cid").val();
    var useSms = $("#useSMS").val();
    var active = $("#active").val();

    $.ajax({
        type: "GET",
        contentType: "application/json; charset=utf-8",
        url: '@Url.Action("SaveCompany", "Admin")',
        data: {
            "CompanyName": name, "Currency": currency, "ISOCompanyCode": isoCode, "CalcDeadline": calcDeadLine,
            "UseMealAlgorithm": mealAlgorithm, "NoMeal": noMeal, "Breakfast": breakfast, "HalfBoard": halfBoard,
            "FullBoard": fullBoard, "AdminUserID": adminID, "ApprovalCulture": language, "ApprovalLcid": cid,
            "UseSMS": useSms, "Active": active},
        dataType: "json",
        beforeSend: function () {
        },
        success: function (data) {
            if (data.result == true) {
                $("#GridCompany").html("Record has been saved!");
            }
            else {
                alert("There is some error.");
            }
        }
    })
})

In url of post everything is ok, it has true/false and every parameter with every value fulfilled.

In my controller I have

[HttpGet]
    public JsonResult SaveCompany(string name, string currency, string isoCode, int calcDeadline, bool? mealAlgorithm,
        int noMeal, int breakfast, int halfBoard, int fullBoard, string adminUserId, string approvalCulture,
        int? approvalCid, bool? useSms, bool? active)
    {
        bool result = false;

        try
        {
            result = _companyRepository.SaveCompany(name, currency, isoCode, calcDeadline, mealAlgorithm, noMeal,
                breakfast, halfBoard, fullBoard, adminUserId, approvalCulture, approvalCid, useSms, active);
        }
        catch(Exception ex)
        {
        }

        return Json(new { result }, JsonRequestBehavior.AllowGet);
    }

Nulls are isoCode, mealAlgorithm, approvalCid.

The problem is the wrong names of the fields. In the AJAX you pass ISOCompanyCode but in the Action you're waiting for isoCode The same is for the other two fields (you have different names). Use the same names and it'll fix your problem.