是否弃用了 contents、`rel` 属性的词汇表等属性值?

Are attribute values like contents, glossary for `rel` attribute deprecated?

我一直在阅读 this tutorial. When I cross cheked it with MDN page on link_types 我发现 contents、glossarycopyright 等值没有被提及在 MDN 页面上。对于 copyright 似乎有 license 值的替代方法。

我正在阅读过时的教程吗?值 contents、glossarycopyright 是否已弃用?

有关这方面的当前信息,请参阅 existing rel values page in the Microformats Wiki

该页面是 HTML 规范本身引用的 the official list of rel values that are valid in addition the ones defined in HTML spec itself:

Extensions to the predefined set of link types may be registered in the microformats wiki existing-rel-values page.

所以你看那里,你会看到 contentsglossarycopyright 是全部列为有效 rel 值。

For copyright there seems to be an alternative of license value.

是的,它们基本上是同义词,其中 rel=license 是最新的,rel=copyright 是旧的 ——尽管没有正式弃用。但考虑到 rel=license is among the link types actually defined in the HTML spec itself,现在 推荐 改用 rel=license——但即使这样也不是正式的 mandated/required。 (如果你愿意,你仍然可以安全地使用 rel=copyright。)

2016-03-06更新

所以,我上面所说的 rel=copyright 没有被正式弃用的 (now-deleted/struck-through) 部分实际上是错误的。事实上,HTML 标准说它“不得在文档中使用”。

如果您查看 Link types section of the spec and scroll just past the table there, you’ll see the following sentence []:

Some of the types described below list synonyms for these values. These are to be handled as specified by user agents, but must not be used in documents.

然后,如果您查看 the section for rel=license 的末尾,您会看到上面写着:

Synonyms: For historical reasons, user agents must also treat the keyword "copyright" like the license keyword.

这意味着规范规定 rel=copyright 不得在文档中使用。

所以我也很快就会changing the HTML Checker behavior to emit an error for rel=copyright