Javascript library to browse/query a vo registry?

[alberto micol]

Dear Registry and Applications WGs,

Do you know if a javascript library to browse/query a vo registry exists?

The reason why I’m asking follows...
At ESO we’d like to offer to the users of the ESO science portal (web application) 
the ability to search a vo registry for astronomical catalogs relevant to their scientific use cases.
Once the catalog is found, its endpoint can then be exercised to query the catalog, and display results within the science portal.

Many thanks,
Alberto

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