Javascript 中的 Windows 8 Metro SyndicateClient.retrieveFeedAsync 实际上不是异步的？

发布于 2024-12-29 18:32:19 字数 487 浏览 3 评论 0原文

我正在尝试 Microsoft 网站上的 JS Metro 示例代码。但是，我发现retrieveFeedAsync 不起作用。我的代码是从他们的网站复制/粘贴的，如下所示：

var syn = new Windows.Web.Syndication.SyndicationClient();
var url = new Windows.Foundation.Uri("Some RSS");
console.log("1********************onactive");
syn.retrieveFeedAsync(url).then(processPosts, downloadError);
console.log("2********************onactive");

从 JS 控制台，我注意到第二条日志行从未显示，而它应该显示，因为retrieveFeedAsync 应该给出一个“promise”对象并立即返回。

有人遇到过类似的问题吗？

原文

I'm trying out the JS Metro Sample Code form Microsoft site. However, I discovered that somehow the retrieveFeedAsync didn't work. My code was copied/pasted from their site as follows:

var syn = new Windows.Web.Syndication.SyndicationClient();
var url = new Windows.Foundation.Uri("Some RSS");
console.log("1********************onactive");
syn.retrieveFeedAsync(url).then(processPosts, downloadError);
console.log("2********************onactive");

From the JS console, I noticed that the 2nd log line never got displayed, while it's supposed to because retrieveFeedAsync should give a "promise" object and return immediately.

Anyone had similar issues?

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妄想挽回 2025-01-05 18:32:19

你见过第二个console.log吗？

使用下面的代码，我看到请求是异步的，日志中事件的顺序是：之前、之后、成功。这是我期望的异步请求的顺序。

var syn = new Windows.Web.Syndication.SyndicationClient();
var url = new Windows.Foundation.Uri("http://feeds.bbci.co.uk/news/rss.xml");
console.log("Before");
syn.retrieveFeedAsync(url).then(function (data){ console.log("Success:\n"); console.dir(data); }, function (error){ console.dir(error); });
console.log("After");

Do you ever see the 2nd console.log?

Using the code below I'm seeing the request is async and the order of the events in the log is: before, after, success. Which is the order I would expect for an async request.

var syn = new Windows.Web.Syndication.SyndicationClient();
var url = new Windows.Foundation.Uri("http://feeds.bbci.co.uk/news/rss.xml");
console.log("Before");
syn.retrieveFeedAsync(url).then(function (data){ console.log("Success:\n"); console.dir(data); }, function (error){ console.dir(error); });
console.log("After");

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