Knockout将新行添加到记录映射插件的列表中

我正在使用映射插件来更新视图模型，如下所示：

        $.ajax({
            type: "POST",
            url: url,
            data: data,
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            success: function (json) {
                if (json.Page == 1) {
                    ko.mapping.fromJS(json, {}, self);
                } else {
                    self.List().push(ko.mapping.fromJS(json.List));
                }
                console.log(ko.toJSON(self.List()));
            },
        });

但是，对于第2页（DB中的下几个项），它没有更新List（）可观察数组（在ajax调用完成时只添加NEW项），而是在控制台输出中添加了一个新的List=>Notice"["元素：

AJAX响应（json）

｛"DiscountType"："Transaction"，"List"：[｛"ActivationDate"："/Date（1427215761818）/"，"CustomerName"："Another two 2"，"CustomerNumber"：4328，"Percent"：20，"HasDiscount"：true｝，｛

控制台输出：

[｛"ActivationDate"："/Date（1388556000000）/"，"CustomerName"："Test1股份有限公司"，"Customer Number"：10032，"Percent"：20，"HasDiscount"：true｝，｛百分比"：20，"HasDiscount"：真｝{"ActivationDate"："/Date（14280797661818）/"，"CustomerName"："Another tree"，"Customer Number"：1212，"Percent"：20，"HasDiscount"：true｝]]

我做错了什么？

要推送返回数组的各个元素，请执行类似的操作

success: function (json) {
    if (json.Page == 1) {
        ko.mapping.fromJS(json, {}, self);
    }
    else {
        json.List.forEach( 
            function(element) {
               self.List.push( ko.mapping.fromJS(element) );
            } );
        }
    console.log(ko.toJSON(self.List()));
        }

var vm = function() {
  var self = this;
  self.List = ko.observableArray([]);
  self.initiate = function() {
    json = JSON.parse('{"DiscountType":"Transaction","List":[{"ActivationDate":"/Date(1427215761818)/","CustomerName":"Another two 2","CustomerNumber":4328,"Percent":20,"HasDiscount":true},{"ActivationDate":"/Date(1428079761818)/","CustomerName":"Another tree","CustomerNumber":1212,"Percent":20,"HasDiscount":true}],"Page":2}');
    json.List.forEach(function(entry) {
      self.List.push(ko.mapping.fromJS(entry));
    });
  };
};
vm = new vm();
ko.applyBindings(vm);
vm.initiate();

<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.2.0/knockout-min.js"></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/knockout.mapping/2.4.1/knockout.mapping.min.js'></script>
<html>
<div data-bind='foreach: List'>
  <div data-bind='text: ActivationDate'></div>
</div>
</html>

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