在嵌套JSON对象的情况下，从返回的JSON中获取数据时遇到了问题。

HTML代码如下所示：

<div>
    <h2>List Employee</h2>
    <br />
    <table class="table table-bordered" >
        <thead>
            <tr>
                <td>Id</td>
                <td>Name</td>
                <td>Age</td>
            </tr>
        </thead>
        <tbody data-bind="foreach: Employees">
            <tr>
                <td data-bind="text: Id"></td>
                <td data-bind="text: Name"></td>
                <td data-bind="text: Age"></td>
            </tr>
        </tbody>
    </table>
</div>

然后击倒JS

function ProductViewModel() {
    var self = this;
    self.Employees = ko.observableArray();`

    $.ajax({
        url: '/Home/GetEmployee',
        cache: false,
        type: 'GET',
        contentType: 'application/json; charset=utf-8',
        data: {},
        success: function (data) {
            self.Employees(ko.mapping.fromJS(data));
        }
    })
} 
var viewModel = new ProductViewModel();
ko.applyBindings(viewModel);`

控制器：

public JsonResult GetEmployee()
{
    var employee = db.Employee.ToList();
    return Json(new { data = employee }, JsonRequestBehavior.AllowGet);
}

Json对象：

`{"data":[{"Id":1,"Name":"Andrew","Age":25},{"Id":2,"Name":"John","Age":28},{"Id":3,"Name":"Layla","Age":24},{"Id":4,"Name":"Mia","Age":26}]}`

结果错误：

任何人都可以改善我的代码，请...