推json敲出可观察的数组

I have radio buttons which are observable and depending on the value i want to trigger a GETJSON method to return my data and then push it to an observable array that i am displaying as a list. The error i am getting is Cannot read property 'push' of undefined. Here is my Fiddle

我有可观察的单选按钮，根据我想要触发GETJSON方法的值来返回我的数据，然后将其推送到我正在显示为列表的可观察数组。我得到的错误是无法读取undefined的属性'push'。这是我的小提琴

How do i get this Data to my observable Array after the radio button is clicked triggering the getjson method?

在单击单选按钮触发getjson方法后，如何将此数据输入到我的可观察数组？

self.currentAnswer = ko.observable();
    self.recipientList = ko.observableArray([]);
self.currentAnswer.subscribe(function (newValue) {
    if (newValue == 'Internal') {
        $.getJSON('GetInfo', function (data) {
            var result = $.parseJSON(data);

            self.recipientList.push(result);


        });

2 个解决方案

#1

Things to consider:

需要考虑的事项：

$.getJSON() will parse the JSON for you, you never need to do that yourself. This is also true for $.get(). (*)
$ .getJSON（）将为您解析JSON，您自己永远不需要这样做。 $ .get（）也是如此。（*）
Knockout observables are functions. You can use them as callbacks. (**)
Knockout observables是函数。您可以将它们用作回调。（**）

With this knowledge:

有了这些知识：

self.recipientList = ko.observableArray();
self.currentAnswer = ko.observable();
self.currentAnswer.subscribe(function (newValue) {
    if (newValue == 'Internal') {
        $.get('GetInfo').done(self.recipientList);
    }
});

(*) If you do not get parsed JSON in your success callback, fix the Content-Type header of your response.

（*）如果在成功回调中没有解析JSON，请修复响应的Content-Type标头。

(**) If you call an observable and pass a value as first argument, it will store that value. Coincidentally jQuery calls Ajax success callbacks passing the returned value as the first parameter. Perfect fit.

（**）如果调用一个observable并将值作为第一个参数传递，它将存储该值。巧合的是，jQuery调用Ajax成功回调，将返回值作为第一个参数传递。完美契合。

2 个解决方案

#1

更多相关文章

随机推荐