Fragment Identifier - Proposals

Proposals

Several proposals have been made for fragment identifiers for use with plain text documents (which cannot store anchor metadata), or to refer to locations within HTML documents in which the author has not used anchor tags:

  • As of 2012 the Media Fragments URI 1.0 (basic) is a W3C Proposed Recommendation.
  • The Python Package Index appends the MD5 hash of a file to the URL as a fragment identifier, so the integrity of the file can be checked automatically.
    • http://pypi.python.org ... zodbbrowser-0.3.1.tar.gz#md5=38dc89f294b24691d3f0d893ed3c119c
  • A hash-bang fragment is a fragment starting with an exclamation mark !. An exclamation mark is illegal in HTML, XHTML, and XML identifiers, ensuring separation from that functionality.
    • Google Webmaster Central has proposed using an initial exclamation mark in fragment identifiers for stateful AJAX pages:
      http://example.com/page?query#!state

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