如何使用静态字符串为分层有序列表项编号添加前缀

由尔如此冷淡发布于 2020-04-09 06:35:23

I can set a constant string for for each section, and need to preserve original hierarchical structure of nested OL tags. I need something as:

1. First section

  1.1. Some text here, and some fruits:
        1.1.1. Apples
        1.1.2. Oranges
  1.2. Some more text here...

2. Second section

  2.1. Some second text here, and some fruits:
        2.1.1. Bannanas
        2.1.2. Mangos
  2.2. Some more second text here...

我可以在其中对部分编号进行硬编码，但是自动CSS却需要其他所有...我尝试这样做，但无法按预期工作：样式（CSS）阻止了HTML块，

li:not(:last-child) {
	padding-bottom: 9pt;
}
ol ol > li:first-child {
	padding-top: 9pt;
}

/* hierarchical ordering:  */
ol {
	padding-left: 12pt;	
	counter-reset: item
}
li {
  display: block
}
li:before {
  content: counters(item, ".") ". ";
  counter-increment: item
}
section > ol li::before {
	position: relative;
	left:-4pt;
}
/* hard coding section numbers to avoid risks on bad browsers */
#sec1 > ol > li::before  { content: "1." counter(item) "."; }
#sec2 > ol > li::before  { content: "2." counter(item) "."; }
#sec3 > ol > li::before  { content: "3." counter(item) "."; }

<section id="sec1">
  <h1>1. First section</h1>
  <ol>
    <li>Some text here, and some fruits:
      <ol>
        <li>Apples</li>
        <li>Oranges</li>
      </ol>
    </li>
    <li>Some more text here..</li>
  </ol>
</section>

<section id="sec2">
  <h1>2. Second section</h1>
  <ol>
    <li>Some second text here, and some frits:
      <ol>
        <li>Bannanas</li>
        <li>Mangos</li>
      </ol>
    </li>
    <li>Some more second text here..</li>
  </ol>
</section>

笔记

similar to "How to prefix a word in a list number", "Insert CSS parent section counter for nested lists" and "How can I prefix ordered list item numbers with a static string using CSS?" but not duplicated.
need clean HTML5 + CSS, no Javascript.
Need to use modern Firefox and Chrome browsers only (no Microsoft).
Thanks @j08691 for formating this question text.

牵绊情愫

2020-04-09 06:35:23

您需要做的就是为不同级别的嵌套建立不同的计数器。唯一的问题是，您需要事先知道要进行多少级操作，因为CSS不能迭代推断出嵌套的深度。

使用标记，您将需要3级嵌套：

level0item will be the counter for sections
level1item will be the top <ol>
level2item will be for the first-level nested <ol>

然后，您可以简单地在其子元素中增加这些计数器。请参阅下面的概念验证：

li:not(:last-child) {
	padding-bottom: 9pt;
}
ol ol > li:first-child {
	padding-top: 9pt;
}

body {
  counter-reset: level0item;
}

section h1::before {
  content: counter(level0item)". ";
  counter-increment: level0item;
}

/* hierarchical ordering:  */
section > ol {
	padding-left: 12pt;	
	counter-reset: level1item;
}
section > ol ol {
  counter-reset: level2item;
}
li {
  display: block;
}
section > ol li::before {
	position: relative;
	left:-4pt;
}

section > ol > li::before {
  content: counter(level0item)"." counter(level1item) ".";
  counter-increment: level1item;
}
section > ol ol > li::before {
  content: counter(level0item) "." counter(level1item) "." counter(level2item);
  counter-increment: level2item;
}

<section>
  <h1>First section</h1>
  <ol>
    <li>Some text here, and some fruits:
      <ol>
        <li>Apples</li>
        <li>Oranges</li>
      </ol>
    </li>
    <li>Some more text here..</li>
  </ol>
</section>

<section>
  <h1>Second section</h1>
  <ol>
    <li>Some second text here, and some frits:
      <ol>
        <li>Bannanas</li>
        <li>Mangos</li>
      </ol>
    </li>
    <li>Some second text here, and some frits:
      <ol>
        <li>Bannanas</li>
        <li>Mangos</li>
      </ol>
    </li>
    <li>Some second text here, and some frits:
      <ol>
        <li>Bannanas</li>
        <li>Mangos</li>
      </ol>
    </li>
  </ol>
</section>

刺青

2020-04-09 06:35:23

I removed unnecessary codes and changed h1s to h2s.

body {
  counter-reset: item;
}
h2:before {
  counter-increment: item;
  content: counter(item) ". ";
}
ol {
  list-style-type: none;
  counter-reset: item;
}
li:before {
  counter-increment: item;
  content: counters(item, ".") ". ";
}

<section>
  <h2>First section</h1>
    <ol>
      <li>Some text here, and some fruits:
        <ol>
          <li>Apples</li>
          <li>Oranges</li>
        </ol>
      </li>
      <li>Some more text here..</li>
    </ol>
</section>

<section>
  <h2>Second section</h1>
    <ol>
      <li>Some second text here, and some frits:
        <ol>
          <li>Bannanas</li>
          <li>Mangos</li>
        </ol>
      </li>
      <li>Some more second text here..</li>
    </ol>
</section>

Your counter counts only li elements. You need to count h2s with the same counter too.

尔如此冷淡

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