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IRI (Internationalized Resource Identifier) is an extension of the URI. It does not return data, it is an identifier. There is also no "RDF" IRI/URI; all the URIs you list are "http" or "https" URIs. Parsing such a URI would mean splitting it into parts like "http", "www.w3.org", and "/1999/02/22-rdf-syntax-ns".

Usually the web server is configured to produce semantic data (in Turtle, RDF/XML, JSON-LD, RDFa etc.; you'd use content negotiation to get one of the formats you understand) when you navigate to URIs actually denoting a vocabulary, but it doesn't have to.

There are libraries for JS for working with RDF, but if you want to do this in a web page, with client-side JavaScript, you are out of luck ‒ JavaScript doesn't allow you to retrieve the content of a cross-domain page.

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Thank you very much for your reply! That's what I want to do: text Develop an RDF Brower(an HTML Project), use javascript to parse the "https" URIs of any address (as above), and show it in the form of list, RDF graph, etc. I use Apache Jena to parse RDF in java projects, and I will try rdfjs in this html projects. Best regards
@chenkun So you are interested in something like this, i.e. to parse a URI and represent it in RDF?
Yes, I'm looking forward to making an html project that everyone can embed directly into any web project.
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This question has been resolved.

I use rdflib.js to parse HTTP RDF IRI:

But javascript can't parse CORS requests:

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