在JavaScript中解析XML时读取属性
我有以下XML:在JavaScript中解析XML时读取属性,javascript,xml,windows-8,microsoft-metro,winjs,Javascript,Xml,Windows 8,Microsoft Metro,Winjs,我有以下XML: <item> <media:content url="..." height="130" width="130" type="image/jpeg" /> <media:credit role="provider"></media:credit> <media:text type="html"></media:text> <tit
<item>
<media:content url="..." height="130" width="130" type="image/jpeg" />
<media:credit role="provider"></media:credit>
<media:text type="html"></media:text>
<title></title>
<link></link>
<description></description>
<pubDate></pubDate>
<category></category>
<guid isPermaLink="false"></guid>
</item>
以及以下代码:
WinJS.xhr({ url: ... }).then(function (rss) {
var items = rss.responseXML.querySelectorAll("item");
for (var n = 0; n < items.length; n++) {
var article = {};
article.title = items[n].querySelector("title").textContent;
var thumbs = items[n].querySelectorAll("media");
article.content = items[n].querySelector("text").textContent;
article.description = items[n].querySelector("description").textContent;
if (thumbs.length > 1) {
article.thumbnail = thumbs[0].attributes.getNamedItem("content");
}
else {
var firstindex = article.content.indexOf("<img");
if (firstindex !== -1) {
var secondindex = article.content.indexOf("src=", firstindex) + 5;
var thirdindex = article.content.indexOf("\"", secondindex);
article.thumbnail = article.content.slice(secondindex, thirdindex);
}
}
if (article.thumbnail) {
list.push({ group: BasketballGroups[0], title: article.title, description: article.description, content: article.content, backgroundImage: article.thumbnail });
}
}
});
我在以下行中不断遇到错误:article.content=items[n]。querySelectortext.textContent;->JavaScript运行时错误:无法获取未定义或空引用的属性“textContent”
这是一个Windows8JavaScript应用程序
我做错了什么?是否有其他方法可以从中选择文本元素?这意味着您的一个节点中没有节点。我如何选择元素?document.querySelectormedia\\:text maybe?PS:应该在我以前的注释中。现在我得到JavaScript运行时错误:无法在以下行获取未定义或空引用的属性“textContent”:article.content=items[n]。querySelectormedia\\\:text.textContent;双重检查,媒体\\:文本也不起作用。