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I use jQuery to parse an RSS feed. I can successfully get the RSS feed using AJAX:
$.get("podcast.xml", function (data) {
xml = $(data);
}, "xml");
Now I can get the title of the podcast by using xml.find("channel > title").text(). How can I select the <itunes:image> tag in my RSS feed?
The command xml.find("channel > itunes:image") does not work, because : separates in CSS the tag name and the pseudo class. I also tried xml.find("channel > image") but it does not work.
How can I handle XML namespaces in CSS Selectors or in jQuery?
334
The most basic concept of jQuery is to "select some elements and do something with them." jQuery supports most CSS3 selectors, as well as some non-standard selectors.
XML Namespaces - The xmlns Attribute When using prefixes in XML, a namespace for the prefix must be defined. The namespace can be defined by an xmlns attribute in the start tag of an element. The namespace declaration has the following syntax. xmlns:prefix="URI".
An XML namespace is a collection of names that can be used as element or attribute names in an XML document. The namespace qualifies element names uniquely on the Web in order to avoid conflicts between elements with the same name.
One of the primary motivations for defining an XML namespace is to avoid naming conflicts when using and re-using multiple vocabularies. XML Schema is used to create a vocabulary for an XML instance, and uses namespaces heavily.
CSS allows you to specify namespaces for use with selectors within stylesheets.
However, jQuery doesn't support this since you have no way of declaring the XML namespace in the first place (as jQuery has nothing to do with CSS besides borrowing from its selector syntax), so you have to treat the colon as a literal character instead by escaping it like so:
xml.find("channel > itunes\\:image")
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