使用第 n 类型的计数器

Question

是否可以使用 nth-type 这样的计数器：

td:nth-of-type(counter(section)):before { 
     content: "Date"counter(section); 
     counter-increment: section;
}

计数器初始化为

#myTable  tr { 
    border: 1px solid #ccc; 
    counter-reset: section;counter-increment: section;
}

我想做的是这个 - 检查 tr 是否有 class iR，如果有，结构如下所示：

table.myTable td:nth-of-type(1):before { content: "Date"; }
table.myTable td:nth-of-type(2):before { content: "Fajr"; }
table.myTable td:nth-of-type(3):before { content: "Fr"; }
table.myTable td :nth-of-type(4):before { content: "Se"; }
table.myTable td:nth-of-type(5):before { content: "Dr"; }
table.myTable td:nth-of-type(6):before { content: " "; }
table.myTable td:nth-of-type(7):before { content: "A"; }
table.myTable td:nth-of-type(8):before { content: " "; }
table.myTable td:nth-of-type(9):before { content: "Mb"; }
table.myTable td:nth-of-type(10):before { content: " "; }
table.myTable td:nth-of-type(11):before { content: "I"; }
table.myTable td:nth-of-type(12):before { content: ""; }

没有就变成这样

table.myTable td:nth-of-type(1):before { content: "Date"; }
table.myTable td:nth-of-type(2):before { content: "Fr"; }
table.myTable td :nth-of-type(3):before { content: "Se"; }
table.myTable td:nth-of-type(4):before { content: "Dr"; }
table.myTable td:nth-of-type(5):before { content: "A"; }
table.myTable td:nth-of-type(6):before { content: "Mb"; }
table.myTable td:nth-of-type(7):before { content: "I"; }

这是我正在尝试做的 jsfiddle https://jsfiddle.net/wj5gnafm/1/

Answer 1

根据现在提供的 fiddle，您甚至不需要 counter。您应该能够通过使用我在原始答案中提到的 class 和否定选择器来实现这一点。下面是一个示例片段。

td {
  border: 1px solid;
}
table tr.iRow td:nth-of-type(1):before {
  content: 'Date ';
}
table tr.iRow td:nth-of-type(2):before {
  content: 'Fr ';
}
table tr.iRow td:nth-of-type(3):before {
  content: '';
}
table tr.iRow td:nth-of-type(4):before {
  content: 'Se ';
}
table tr.iRow td:nth-of-type(5):before {
  content: 'Dr ';
}
table tr.iRow td:nth-of-type(6):before {
  content: '';
}
table tr.iRow td:nth-of-type(7):before {
  content: 'A ';
}
table tr.iRow td:nth-of-type(8):before {
  content: '';
}
table tr.iRow td:nth-of-type(9):before {
  content: 'Mb ';
}
table tr.iRow td:nth-of-type(10):before {
  content: '';
}
table tr.iRow td:nth-of-type(11):before {
  content: 'I ';
}
table tr.iRow td:nth-of-type(12):before {
  content: '';
}
table tr:not(.iRow) td:nth-of-type(1):before {
  content: 'Date ';
}
table tr:not(.iRow) td:nth-of-type(2):before {
  content: 'Fr ';
}
table tr:not(.iRow) td:nth-of-type(3):before {
  content: 'Se ';
}
table tr:not(.iRow) td:nth-of-type(4):before {
  content: 'Dr ';
}
table tr:not(.iRow) td:nth-of-type(5):before {
  content: 'A ';
}
table tr:not(.iRow) td:nth-of-type(6):before {
  content: 'Mb ';
}
table tr:not(.iRow) td:nth-of-type(7):before {
  content: 'I ';
}

<table>
  <tr class='iRow'>
    <td>A</td>
    <td>B</td>
    <td>C</td>
    <td>D</td>
    <td>E</td>
    <td>F</td>
    <td>G</td>
    <td>H</td>
    <td>I</td>
    <td>J</td>
    <td>K</td>
    <td>L</td>
  </tr>
  <tr>
    <td>A</td>
    <td>B</td>
    <td>C</td>
    <td>D</td>
    <td>E</td>
    <td>E</td>
    <td>E</td>
  </tr>
</table>

原问题的答案：

正如我在对问题的评论中提到的，您不能将计数器的值作为参数传递给 nth-of-type（或任何其他 nth-*）选择器。

只有在存在所需的 class 时（通过使用 class 选择器）执行 counter-increment 并使用 :not([classname]) 递增其他柜台。

显示值时，使用选择器中的class或class-否定，然后根据需要显示值。下面是一个示例片段。

table {
  counter-reset: section, section-other;
}
table, tr, td {
  border: 1px solid;
}
table tr.iRow {
  counter-increment: section;
  background: sandybrown; /* just for distinction */
}
table .iRow td:nth-of-type(1):before {
  content: "Foo." counter(section)" ";
}
table .iRow td:nth-of-type(2):before {
  content: "Bar." counter(section)" ";
}
table .iRow td:nth-of-type(3):before {
  content: "Baz." counter(section)" ";
}
table tr:not(.iRow) {
  counter-increment: section-other;
  background: wheat; /* just for distinction */
}
table tr:not(.iRow) td:nth-of-type(1):before {
  content: "ooF." counter(section-other)" ";
}
table tr:not(.iRow) td:nth-of-type(2):before {
  content: "raB." counter(section-other)" ";
}
table tr:not(.iRow) td:nth-of-type(3):before {
  content: "zaB." counter(section-other)" ";
}

<table>
  <tr class='iRow'>
    <td>A</td><td>B</td><td>C</td>
  </tr>
  <tr class='iRow'>
    <td>A</td><td>B</td><td>C</td>
  </tr>
  <tr>
    <td>A</td><td>B</td><td>C</td>  
  </tr>
  <tr class='iRow'>
    <td>A</td><td>B</td><td>C</td>  
  </tr>
  <tr>
    <td>A</td><td>B</td><td>C</td>  
  </tr>
  <tr class='iRow'>
    <td>A</td><td>B</td><td>C</td>  
  </tr>
  <tr>
    <td>A</td><td>B</td><td>C</td>  
  </tr>
  <tr>
    <td>A</td><td>B</td><td>C</td>  
  </tr>
</table>

使用第 n 类型的计数器

Using counter with nth type

css

css-counter