我可以使用CSS对表格列着色而不对单个单元格进行着色

Question

有没有办法将列的颜色跨越一直向下.请参阅下面的示例:

<table border="1">
  <tr>
    <th>Motor</th>
    <th colspan="3">Engine</th>
    <th>Car</th>
    <th colspan="2">Body</th>
  </tr>
  <tr>
    <td>1</td>
    <td>2</td>
    <td>3</td>
    <td>4</td>
    <td>5</td>
    <td>6</td>
    <td>7</td>
  </tr>
  <tr>
    <td>7</td>
    <td>1</td>
    <td>2</td>
    <td>3</td>
    <td>4</td>
    <td>5</td>
    <td>6</td>
  </tr>
</table>

我正在寻找一种更好的方法(更少的代码,非个人着色)来着色,例如,"引擎"和"身体"跨度,包括它们下面的所有单元格 #DDD

<style>
  .color {
    background-color: #DDD
  }
</style>
<table border="1">
  <tr>
    <th>Motor</th>
    <th colspan="3" class="color">Engine</th>
    <th>Car</th>
    <th colspan="2" class="color">Body</th>
  </tr>
  <tr>
    <td>1</td>
    <td class="color">2</td>
    <td class="color">3</td>
    <td class="color">4</td>
    <td>5</td>
    <td class="color">6</td>
    <td class="color">7</td>
  </tr>
  <tr>
    <td>7</td>
    <td class="color">1</td>
    <td class="color">2</td>
    <td class="color">3</td>
    <td>4</td>
    <td class="color">5</td>
    <td class="color">6</td>
  </tr>
</table>

Answer 1

是的,你可以...使用<col>元素:

.grey {
  background-color: rgba(128,128,128,.25);
}
.red {
  background-color: rgba(255,0,0,.25);
}
.blue {
  background-color: rgba(0,0,255,.25);
}

<table>
  <colgroup>
    <col class="grey" />
    <col class="red" span="3" />
    <col class="blue" />
  </colgroup>
  <thead>
    <tr>
      <th>#</th>
      <th colspan="3">color 1</th>
      <th>color 2</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <th>1</th>
      <td>red</td>
      <td>red</td>
      <td>red</td>
      <td>blue</td>
    </tr>
    <tr>
      <th>2</th>
      <td>red</td>
      <td>red</td>
      <td>red</td>      
      <td>blue</td>
    </tr>
  </tbody>
</table>

_{注意:您可以使用该span属性使col定义应用于多个列.
另见:<colgroup>}

Answer 2

您可以使用nth-child选择器:

tr td:nth-child(2),
tr td:nth-child(3) {
  background: #ccc;
}

<table>
  <tr>
    <th colspan="2">headline 1</th>
    <th>headline 2</th>
  </tr>
  <tr>
    <td>column 1</td>
    <td>column 2</td>
    <td>column 3</td>
  </tr>
  <tr>
    <td>column 1</td>
    <td>column 2</td>
    <td>column 3</td>
  </tr>
  <tr>
    <td>column 1</td>
    <td>column 2</td>
    <td>column 3</td>
  </tr>
</table>

Answer 3

对单元格进行样式化通常最简单(如果需要,可以按列),但可以以不同方式对列进行样式设置.一种简单的方法是将列包装在colgroup元素中并在其上设置样式.例:

<style>
.x {
    background-color: #DDD
}
</style>
<table border="1">
<col>
<colgroup class=x>
  <col>
  <col>
  <col>
</colgroup>
<col>
<colgroup class=x>
  <col>
  <col>
</colgroup>
  <tr>
    <th>Motor</th>
    <th colspan="3" class="color">Engine</th>
    <th>Car</th>
    <th colspan="2" class="color">Body</th>
  </tr>
  <tr>
    <td>1</td>
    <td class="color">2</td>
    <td class="color">3</td>
    <td class="color">4</td>
    <td>5</td>
    <td class="color">6</td>
    <td class="color">7</td>
  </tr>
  <tr>
    <td>7</td>
    <td class="color">1</td>
    <td class="color">2</td>
    <td class="color">3</td>
    <td>4</td>
    <td class="color">5</td>
    <td class="color">6</td>
  </tr>
</table>

Answer 4

我会为此使用nth-childcss 伪类：

tr td:nth-child(2), tr th:nth-child(2), tr td:nth-child(3), tr td:nth-child(4), tr th:nth-child(4), tr td:nth-child(6), tr td:nth-child(7){
    background-color: #DDD;
}

tr td:nth-child(2), tr th:nth-child(2), tr td:nth-child(3), tr td:nth-child(4), tr th:nth-child(4), tr td:nth-child(6), tr td:nth-child(7){
    background-color: #DDD;
}

tr td:nth-child(2),
tr th:nth-child(2),
tr td:nth-child(3),
tr td:nth-child(4),
tr th:nth-child(4),
tr td:nth-child(6),
tr td:nth-child(7) {
  background-color: #DDD;
}

Answer 5

以下工具是第n个子选择器,应该可以工作......

<style type="text/css">
    th:nth-child(2),
    th:nth-child(4)
    {
        background-color: rgba(255, 0, 0, 1.0);
    }

    td:nth-child(2), 
    td:nth-child(3),
    td:nth-child(4),
    td:nth-child(6),
    td:nth-child(7)
    {
        background-color: rgba(255, 0, 0, 0.5);
    }
</style>

Answer 6

您可以使用CSS3:http: //jsfiddle.net/snuggles08/bm98g8v8/

<style>
  .table td:nth-of-type(1) {
    background: red;
  }
  .table td:nth-of-type(5) {
    background: blue;
  }
  .table td:nth-of-type(3) {
    background: green;
  }
  .table td:nth-of-type(7) {
    background: lime;
  }
  .table td:nth-of-type(2) {
    background: skyblue;
  }
  .table td:nth-of-type(4) {
    background: darkred;
  }
  .table td:nth-of-type(6) {
    background: navy;
  }
</style>
Styled table:
<table border="1" class="table">
  <tbody>
    <tr>
      <td>1</td>
      <td>2</td>
      <td>3</td>
      <td>4</td>
      <td>5</td>
      <td>6</td>
      <td>7</td>
    </tr>
    <tr>
      <td>7</td>
      <td>1</td>
      <td>2</td>
      <td>3</td>
      <td>4</td>
      <td>5</td>
      <td>6</td>
    </tr>
  </tbody>
</table>
<hr>Unstyled table:
<table border="1" class="table2">
  <tbody>
    <tr>
      <td>1</td>
      <td>2</td>
      <td>3</td>
      <td>4</td>
      <td>5</td>
      <td>6</td>
      <td>7</td>
    </tr>
    <tr>
      <td>7</td>
      <td>1</td>
      <td>2</td>
      <td>3</td>
      <td>4</td>
      <td>5</td>
      <td>6</td>
    </tr>
  </tbody>
</table>