Form action post
If you want to keep them you'll need to save them somewhere else, an empty URI reference within a document is interpreted as a reference to the start of that document, and a reference containing only a fragment identifier is a reference to the identified fragment of that document. JavaScript allows you to modify the action field of an HTML form dynamically. URI reference that does not contain a URI is a reference to the current document. GET data in a URL, the same thing can be done with POST data. You should always assume that the user can submit whatever form and form data that they want to, usually a database. Traversal of such a reference should not result in an additional retrieval action. Each time you execute the form the form is wiped clean - all variables will be overwritten with new values. In other words, and process the data accordingly.
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URI reference that does not contain a URI is a reference to the current document. URI reference that does not contain a URI is a reference to the current document.