当我用 XHTML 写入页面时。 我有3种类型 doctype - strict , transitional 和 frameset 。
HTML5里有吗?
不,HTML5只是HTML5,没有子集。
html5 doc 类型
<!DOCTYPE html>
当您使用新的 < 坚固> HTML5 DOCTYPE 时,它会触发浏览器,使页面达到 < 坚固 > 标准达标模式 。
<坚固>标准达标模式
向这个 < a href=>""http://www.motive.co.nz/glossary/quirks-mode.php" rel="noreferr" >link
否, HTML5 doctype
<!DOCTYPE html>
具有独特性,因为它被选为能够翻转所有当前浏览器(甚至 IE6, afaik) 的最短的 doctype (string) 在标准模式 (可以用上/混合大小写)
HTML 5 需要一种用于遗留兼容性的 doc 类型。 它有一个短的 doc类型 < code\ lt;! DOCTYPE html> 和一个长的 docty 类型
只有一个:
<!DOCTYPE html>
标准 < a href="" "http://dev.w3.org/html5/spec/syntax.html#the-doctype" rel=“nofolpt”>在HTML HTML 序列化 HTML 5 (即作为text/html ) 中要求的序言 。
<!DOCTYPE html>
一些 HTML 生成器, 特别是 XSLT, 难以创建上述 doc 类型 。 它们可能使用
<!DOCTYPE html SYSTEM "about:legacy-compat">
在HTML5的 XML 序列化中(即当被作为 application/xhtml+xml 使用时), doctype 可以是上述两种类型之一,也可以完全省略。
请注意,这些变异并非严格、过渡或框架设置。 HTML 5 中有效或无效的内容对上述每种变异都是相同的---- 暂且不考虑 HTML 和 XML 语法之间的差异。
HTML5只有一个,即:
<!DOCTYPE html>
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