javascript 在淘汰赛中从 JSON 对象创建 ko.observableArray
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/9797096/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Create ko.observableArray from JSON Object in knockout
提问by Maxali
I just started using knockout.js and it works great with normal bidings. I have a problem with observableArray.
我刚开始使用knockout.js，它在正常投标中效果很好。我对 observableArray 有问题。
I want to create an observableArray and assign to it a JSON data from Google Feed API. Here is the JSON format https://developers.google.com/feed/v1/devguide#resultJson
我想创建一个 observableArray 并将来自 Google Feed API 的 JSON 数据分配给它。这是 JSON 格式https://developers.google.com/feed/v1/devguide#resultJson
google.load("feeds", "1"); // Loads Google Feed API
function FeedViewModel()
{
// Data
var self = this;
self.allEntries = null;
// Example property, and it works
self.feedHead = ko.observable("BBC News");
var feed = new google.feeds.Feed("feeds.feedburner.com/BBCNews");
feed.setResultFormat(google.feeds.Feed.JSON_FORMAT);
feed.includeHistoricalEntries();
feed.setNumEntries(30);
// Loads feed results
feed.load(function (result) {
if (!result.error) {
self.allEntries = ko.observableArray(result.feed.entries);
// accessing the title from here is OK
alert(self.allEntries()[1].title);
}
});
}
In the above example, accessing the array from the ViewModel is OK but I need to display it in the view (to the browser) using foreach:allEntries
在上面的例子中，从 ViewModel 访问数组是可以的，但我需要使用 foreach:allEntries 在视图中显示它（到浏览器）
<h2 data-bind="text: feedHead">Latest News</h2>
<!-- ko foreach:allEntries -->
<div class="lists">
<a href="#" data-bind="text: title"></a>
</div>
<!-- /ko -->
But nothing the ko foreach loop returns nothing. The observable feedHead is OK.
但是 ko foreach 循环什么都不返回。可观察的 feedHead 没问题。
Also I dont have any JS error. Any help..
我也没有任何 JS 错误。任何帮助..
回答by Keith Nicholas
Try declaring ( where you have the // Data )
尝试声明（您拥有 // Data 的位置）
self.allEntries = ko.observableArray([]);
then in the load...
然后在负载...
self.allEntries(result.feed.entries);
