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Can anyone explaing me this line in detail?
// Find all the RSS link elements.
var result = doc.evaluate(
'//*[local-name()="rss" or local-name()="feed" or local-name()="RDF"]',
doc, null, 0, null);
Best Regards,
Cetin
It’s doing an XPath query to find if the current document is an RSS feed by checking for the presence of certain XML elements. (Mozilla has a great run-down on XPath in JavaScript here)
Here are some examples:
Take look at the RSS Feed for this question:
It’s looking for that
<feed>element.Or for example the slashdot.org main feed:
It’s looking for that
<rdf:RDF>element.