如何使用jQuery测试XML

How can I test for XML using jQuery?

如何使用jQuery测试XML ?

I have a bookmarklet that needs to know whether the current page is XML. How can I check for this?

我有一个bookmarklet，它需要知道当前页面是否为XML。我怎么检查?

I imagine I will pass in the document and check for the following:

我想我会把文件传给你，检查一下:

<?xml version="1.0" encoding="UTF-8"?>

But not sure.

但不确定。

1 个解决方案

#1

Not sure if you want to load the page again, but you could run it through jQuery.parseXML(), which will throw an exception for invalid XML, so you could just try to parse the page and if no exception is thrown then it is (valid) XML.

不确定是否要再次加载页面，但是可以通过jQuery.parseXML()运行它，它会对无效的XML抛出异常，因此可以尝试解析页面，如果没有抛出异常，那么它就是(有效的)XML。

For example:

例如:

var xml = "<rss version='2.0'><brokenxml></rss>";
try {
    xmlDoc = $.parseXML(xml);
} catch (err) {
    // was not XML
}