html5风景首页,The HTML Landscape

Overview

This document describes the perceptible differences between three HTML

specifications:

WHATWG HTML LS —

The HTML Living Standard as maintained by the WHATWG

W3C HTML 5.1 —

The HTML Nightly document, targeted for standardisation by W3C in 2016.

W3C HTML 5.0 —

The HTML 5.0 document, currently in Candidate Recommendation and targeted for

standardisation by W3C in 2014.

This document does not currently take into account

extension

specifications (longdesc, 2D context...) currently being developed by the HTML WG.

They may be included in future updates after discussion in the working group.

"Perceptible" differences are substantive changes but not editorial details. (Example:

an attribute that's not present in one specification would be listed along with whatever

other pieces of the specification that it affects, but its absence from the appendix

would not be accounted for.)

This document is updated on a regular basis based on the stream of commits made in the

git repository. A more thorough update pass is made about every 6 months to ensure that

nothing has been overlooked. Patches and bug reports are welcome at any time.

All differences are categorised as: "user agent" (for those that change UA behaviour),

"validity" (that affect the validity of a document but not its behaviour), "author

advice" (for non-normative advice given to authors but isn't typically validated for,

usually because it's not possible), and "opinion" (the impact is unclear or hard to

assess but the difference stems from disagreement nevertheless).

Each difference has a rationale for its existence. The rationale is intended to be

succinct (no need to rehash discussions taking place elsewhere) and to simply state its

cause.

You can contribute to this document over at

https://github.com/w3c/html-landscape,

patches welcome!