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Robert Krimen has created a JavaScript URI Object capable of parsing, manipulating, and generating URIs. It splits up a URI into three objects: the URI, the path, and the query. Changes to the path or query objects are reflected in their respective URI. Armed with a wide array of methods, the b9j.uri object is well equipped to handle even the toughest of URIs.

Here's a overview of b9j.uri.URI from Robert:

• Parses using Steven Levithan's parseUri 1.2
• Easy path traversal (ascend to parent, descend to a child)
• Set or add to the URI query (with proper encoding), get/interrogate the query (with proper decoding)
• Add arbitrary data (unencoded) to the end of the query string, for extra flexibility
• Manipulate/interrogate the scheme, user information (username & password), host, port, fragment, and more in a piecewise fashion
• Add, change or strip the extension (html, js, css, ...) from a given URI

The code is available at http://appengine.bravo9.com/b9j/b9j.uri.js (19kb compressed / 5kb gzipped)

• Check out an example
• Read the full documentation