一切都在< ul>必须包装在< li>中？ [英] Does everything inside a <ul> have to be wrapped in an <li>?

问题描述

我需要一些有关HTML中嵌套列表的指导。

I need some guidance about nested lists in HTML.

我有一个布局，我希望像下面那样构建。嵌套未被< li> 包装的元素是否可怕？我确信它违反了标准，但不知道它有什么不良影响。

I have a layout that I would like to be built like below. Is it a terrible thing to nest an element not wrapped by an <li>? I'm fairly sure that it is against standards, but don't know what ill effect it has.

<ul>
  <li>
    <h1>header 1</h1>
    <li>
       <ul>
         <li>nested</li>
         <li>list</li>
       </ul>
    </li>
  </li>
  <li>
    <h1>header 2</h1>
    <li>
       <ul>
         <li>nested</li>
         <li>list</li>
       </ul>
    </li>
  </li>
</ul>

推荐答案

LI 是允许作为 UL 的子元素的唯一元素。以下是 UL $ b

LI is the only element allowed as child elements of UL. Here’s a snippet of the UL element definition:

<!ELEMENT UL - - (LI)+                 -- unordered list -->

另外：

And:

这两种类型的列表都由由 LI 元素定义的列表项序列组成（其结束标记可以省略）。

Both types of lists are made up of sequences of list items defined by the LI element (whose end tag may be omitted).

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