如何在CSS中选择具有特定类名的元素的“最后一个子元素?

问题描述 投票:2回答:2

我有一个HTML表,我想要最后一行,但不包括类为.table-bottom的行,并删除其border-bottom

<table cellpadding="0" cellspacing="0" style="width:752px;" class="table">
    <tr class="table-top"><th style="width:40px;">ID</th> <th>Post title</th> <th>Date</th> <th>Owner</th> <th style="width:100px;">Actions</th></tr>
    <tr class="table-middle"><td>1</td> <td>Test</td> <td>16.7.2013</td> <td>Admin</td> <td>Delete</td></tr>
    <tr class="table-middle"><td>2</td> <td>Test 2</td> <td>3.8.2013</td> <td>Admin</td> <td>Delete</td></tr>
    <tr class="table-bottom"><td colspan="5"></td></tr>
</table>
.table tr th {
color:#929191;
font-weight:bold;
font-size:14px;
text-align:left;
padding-left:19px;
border-right:1px solid #d7d7d7;
border-bottom:1px solid #d7d7d7;
}
.table tr th:last-child {
border-right:none;
}
.table tr td {
color:#929191;
font-weight:bold;
font-size:12px;
padding:19px;
border-right:1px solid #d7d7d7;
border-bottom:1px solid #d7d7d7;
}
.table tr td:last-child {
border-right:none;
}
.table .table-middle:last-of-type td {
border-bottom:none;
background:red;
}
.table tr.table-middle td:first-child {
text-align:center;
}
.table tr th:first-child {
text-align:center;
padding-left:0px;
}
.table tr.table-bottom td {
border-right:none;
border-bottom:none;
}

但是.table .table-middle:last-of-type td选择器不起作用。

这里是Fiddle

任何想法?

html css css-selectors
2个回答
4
投票

简短回答:除非更改HTML结构,否则CSS无法做到。

更多详细信息:

:last-of-type伪类,表示元素,它是其父元素的子元素列表中其类型的最后一个同级。

考虑此选择器::last-of-type

.table-middle:last-of-type正确指向元素时,具有.table-middle类的元素不是其.table-middle的最后一个同级,因为type的术语是指HTML元素本身,而不是type的组合。


这是可行的解决方案:

HTML

element.class

CSS

<table cellpadding="0" cellspacing="0" style="width:752px;" class="table">
    <thead>
        <tr>
            <th style="width:40px;">ID</th>
            <th>Post title</th>
            <th>Date</th>
            <th>Owner</th>
            <th style="width:100px;">Actions</th>
        </tr>
    </thead>
    <tfoot>
        <tr>
            <td colspan="5"></td>
        </tr>
    </tfoot>
    <tbody>
        <tr>
            <td>1</td>
            <td>Test</td>
            <td>16.7.2013</td>
            <td>Admin</td>
            <td>Delete</td>
        </tr>
        <tr>
            <td>2</td>
            <td>Test 2</td>
            <td>3.8.2013</td>
            <td>Admin</td>
            <td>Delete</td>
        </tr>        
    </tbody>
</table>

这里是.table tbody tr:last-child td { border-bottom:none; background:red; }


2
投票

您可以完全不使用类来简化它:

HTML:

Fiddle

CSS:

<table>
    <tr>
        <td>...</td>
        <td>...</td>
        <td>...</td>
        <td>...</td>
        <td>...</td>
    </tr>
    <tr>
        <td>...</td>
        <td>...</td>
        <td>...</td>
        <td>...</td>
        <td>...</td>
    </tr>
    <tr>
        <td>...</td>
        <td>...</td>
        <td>...</td>
        <td>...</td>
        <td>...</td>
    </tr>
    <tr>
        <td>...</td>
        <td>...</td>
        <td>...</td>
        <td>...</td>
        <td>...</td>
    </tr>
</table>

也检查table { width: 500px; } table td { /* style for all the cells between the top and bottom row */ background: red; } table tr:first-child td { /* style for the cells in the top row */ background: green; } table tr:last-child td { /* style for the cells in the bottom row */ background: blue; } table tr:first-child td:first-child, /* first row, first cell */ table tr:first-child td:last-child, /* first row, last cell */ table tr:last-child td:first-child, /* last row, first cell */ table tr:last-child td:last-child { /* last row, last cell */ background: yellow; }

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