MVVM架构~knockoutjs系列之为Ajax传递Ko数组对象

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一些要说的

这是一个很有意思的题目，在ＫＯ里，有对象和数组对象两种，但这两种对象对外表现都是一个function，如果希望得到他的值，需要进行函数式调用，如ko_a()，它的结果为一个具体值或者数组或者函数，而ko_a则表示一个KO对象。

今天主要说一下如何在ajax方法里向后台传递对象和数组等参数，一般说来，我们为后台传递的是字符串和数字，而如果希望传递对象，则需要使用$.param这个方法，下面具体用代码说一下。

一些要做的

一般后以的代码理想是这样的

   public JsonResult GeneratorOrder(int[] idArr)//一些需要被产生订单的购物车记录ＩＤ
        {
            //TODO:Generator Order
            return Json(idArr);
        }

而这样的后台接口来说，我们前台ajax的参数需要做一个$.param的处理，如下

　　　　　　　　 $.ajax({
                    type: "post",
                    url: "/order/GeneratorOrder",
                    data: $.param( self.SelCart(),true),    //! 把数组直接作为$.param的参数是不可以的
                    dataType: "json",
                    success: function (data) {
                        Boxy.alert("To payPage of products:" + JSON.stringify(data));
                    }
                });

而事实上，上面的代码运行结果却是错误的，因为$.param方法只支持对象，不支持直接的数组，而数组如果在对象里，是可以被支持的，这也很有意思，所以，上面代码我们需要修改一下

　　　　　　　　 $.ajax({
                    type: "post",
                    url: "/order/GeneratorOrder",
                    data: $.param({ idArr: self.SelCart() },true),    //! 注意要传递第二个参数
                    dataType: "json",
                    success: function (data) {
                        Boxy.alert("To payPage of products:" + JSON.stringify(data));
                    }
                });

下面的运行结果是我们希望看到的

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