HTML DOCTYPE的意思|示意

A mortal web designer who attaches a DOCTYPE tag to their web page saying, "this is standard HTML," is committing an act of hubris.

一个web设计者挂了一个DOCTYPE标签到他的网页上，说，“这是标准的HTML”，这是一种很傲慢的举止。

First, the only trigger for a browser to parse in standards mode is a DOCTYPE as the first line of an HTML or XHTML document, as Listing 1 shows.

首先，让浏览器用标准模式解析的惟一条件是HTML或XHTML文档的第一行包含DOCTYPE，如清单1所示。

Change your document to use the HTML 4.01 Strict DOCTYPE, and then validate your document, fixing each error reported.

将文档改为采用HTML 4.01 Strict DOCTYPE，然后验证文档并修改报告出的错误。

This is the canonical doctype for HTML 5 Web pages.

这是用于HTML 5 web页面的规范doctype。

So if you've got a doctype that claims XHTML 1.0 strict, and your page really is HTML 4.01 transitional, the Validator will tell you that.

所以如果您已经获得声称是XHTML 1.0严格版的doctype，而此页面实际上是HTML 4.01过渡版，Validator将会告诉您这些。

This has many examples in the wild, such as HTML DOCTYPE, some USES of XMLNS, a version identifier inside your PDF document.

这样的例子有很多，如HTML DOCTYPE, XMLNS的某些使用或PD F文档中的某个版本标识。