将鼠标悬停在表格上时如何突出显示表格的行和列？

时间：2019-01-15 17:15:29

标签： css html-table hover background-color

我想做与本示例http://jsfiddle.net/ThinkingStiff/rUhCa/中完全相同的事情。但是，当我尝试更改表格的背景颜色时，悬停和突出显示将停止工作。

HTML 

<table>
    <tr>
        <th></th>
        <th class="col">50kg</th>
        <th class="col">55kg</th>
        <th class="col">60kg</th>

    </tr>

    <tr>
        <th class="row">160cm</th>
        <td>20</td>
        <td>21</td>
        <td>23</td>
    </tr>


</table>

CSS 

table {
   border-spacing: 0;
   border-collapse: collapse;
   overflow: hidden;
   z-index: 1;
}

td, th, .row, .col {
   cursor: pointer;
   padding: 10px;
   position: relative;
}

td:hover::before,
.row:hover::before { 
   background-color: #ffa;
   content: '\00a0';  
   height: 100%;
   left: -5000px;
   position: absolute;  
   top: 0;
   width: 10000px;   
   z-index: -1;        
}

td:hover::after,
.col:hover::after { 
   background-color: #ffa;
   content: '\00a0';  
   height: 10000px;    
   left: 0;
   position: absolute;  
   top: -5000px;
   width: 100%;
   z-index: -1;        
}

2 个答案:

答案 0 :(得分：1)

假设这是您要查找的东西。当z-index: -1具有背景颜色时，您设置的table将隐藏背景荧光笔，因为它的z索引值比负值高。但是您真的根本不需要它们。您应该使用RGBA颜色-它指定一种颜色的不透明度以进行突出显示。希望能有所帮助！

table {
   border-spacing: 0;
   border-collapse: collapse;
   overflow: hidden;
   background-color: tomato;
}

td, th {
   padding: 10px;
   position: relative;
}

tr:hover{
   background-color: rgba(255, 255, 0, 0.5);
}

td:hover::after,th:hover::after { 
   background-color: rgba(255, 255, 0, 0.5);
   content: '\00a0';  
   height: 10000px;    
   left: 0;
   position: absolute;  
   top: -5000px;
   width: 100%;   
}
<table>
    <tr>
        <th></th>
        <th>50kg</th>
        <th>55kg</th>
        <th>60kg</th>
        <th>65kg</th>
        <th>70kg</th>
    </tr>

    <tr>
        <th class="row">160cm</th>
        <td>20</td>
        <td>21</td>
        <td>23</td>
        <td>25</td>
        <td>27</td>
    </tr>

    <tr>
        <th class="row">165cm</th>
        <td>18</td>
        <td>20</td>
        <td>22</td>
        <td>24</td>
        <td>26</td>
    </tr>

    <tr>
        <th class="row">170cm</th>
        <td>17</td>
        <td>19</td>
        <td>21</td>
        <td>23</td>
        <td>25</td>
    </tr>

    <tr>
        <th class="row">175cm</th>
        <td>16</td>
        <td>18</td>
        <td>20</td>
        <td>22</td>
        <td>24</td>
    </tr>

</table>


























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































<script>

/* by: thinkingstiff.com
license: http://creativecommons.org/licenses/by-nc-sa/3.0/us/ */

var headerUri = 'http://stackoverflow.com/q/848840/918414',
    headerCaption = 'cols, colgroups and css :hover psuedoclass';
    
document.body.insertAdjacentHTML( 
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      '<a href="' + headerUri + '" '
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    + 'onmouseover="this.style.opacity=\'.95\'" '
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    + 'style="'
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        + 'background-image: -ms-linear-gradient( top, rgba( 255, 255, 255, .3), rgba( 255, 255, 255, 0) );'
        + 'border: 1px solid black;'
        + 'border-radius: 2px;'
        + 'color: white;'
        + 'display: block;'
        + 'font: normal 15px/26px Helvetica, Verdana, Tahoma;'
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        + 'text-shadow: -1px -1px black;'
        + 'top: 0px;'
        + 'white-space: nowrap;'
        + 'z-index: 9999;'
    + '"><img '
    + 'style="' 
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        + 'float: left;'
        + 'margin-right: 8px;" '
    + 'src="http://thinkingstiff.com/images/stackoverflow.png" />'
    + headerCaption
    + '</a>'
    );

document.body.insertAdjacentHTML( 
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    + 'onmouseout="this.style.opacity=\'1\'" '
    + 'style="'
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        + 'background-image: linear-gradient( top, rgba( 255, 255, 255, .3), rgba( 255, 255, 255, 0) );'
        + 'background-image: -webkit-linear-gradient( top, rgba( 255, 255, 255, .3), rgba( 255, 255, 255, 0) );'
        + 'background-image: -moz-linear-gradient( top, rgba( 255, 255, 255, .3), rgba( 255, 255, 255, 0) );'
        + 'background-image: -o-linear-gradient( top, rgba( 255, 255, 255, .3), rgba( 255, 255, 255, 0) );'
        + 'background-image: -ms-linear-gradient( top, rgba( 255, 255, 255, .3), rgba( 255, 255, 255, 0) );'
        + 'border: 1px solid black;'
        + 'border-radius: 2px;'
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        + 'color: white;'
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        + 'font-family: Helvetica, Verdana, Tahoma;'
        + 'opacity: 1;'
        + 'padding: 4px 8px;'
        + 'position: fixed;'
        + 'right: 0;'
        + 'text-decoration: none;'
        + 'text-shadow: -1px -1px black;'
        + 'z-index: 999;'
    + '">thinkingstiff.com</a>' 
    ); 

document.head.insertAdjacentHTML( 'beforeEnd',
    '<style>'
    + 'body { margin-top: 40px !important; }'
    + '</style>'
    );
    
    
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-23915674-6']);
_gaq.push(['_trackPageview']);

(function() {
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();
    
</script>

答案 1 :(得分：0)

您可以通过添加伪元素和修改附加代码来解决。

table {
        width:100%;
        border-spacing: 0;
        border-collapse: collapse;
        overflow: hidden;
        z-index: 1;
    }
    
    td, th {
        cursor: pointer;
        padding: 10px;
        position: relative;
    }
    
    td:hover::before { 
        background-color: #ffa;
        content: '\00a0';  
        height: 100%;
        left: -5000px;
        position: absolute;  
        top: 0;
        width: 10000px;   
        z-index: -1;        
    }
    
    td:hover::after { 
        background-color: #ffa;
        content: '\00a0';  
        height: 10000px;    
        left: 0;
        position: absolute;  
        top: -5000px;
        width: 100%;
        z-index: -1;        
    }

 tr:nth-child(odd){
       background-color: rgba(1, 1, 0, 0.2);
}

 tr:nth-child(even){
       background-color: rgba(200, 1, 200, 0.2);
}
<table>
        <tr>
            <th></th>
            <th>50kg</th>
            <th>55kg</th>
            <th>60kg</th>
            <th>65kg</th>
            <th>70kg</th>
        </tr>

        <tr>
            <th class="row">160cm</th>
            <td>20</td>
            <td>21</td>
            <td>23</td>
            <td>25</td>
            <td>27</td>
        </tr>

        <tr>
            <th class="row">165cm</th>
            <td>18</td>
            <td>20</td>
            <td>22</td>
            <td>24</td>
            <td>26</td>
        </tr>

        <tr>
            <th class="row">170cm</th>
            <td>17</td>
            <td>19</td>
            <td>21</td>
            <td>23</td>
            <td>25</td>
        </tr>

        <tr>
            <th class="row">175cm</th>
            <td>16</td>
            <td>18</td>
            <td>20</td>
            <td>22</td>
            <td>24</td>
        </tr>

    </table>


























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































    <script>

    /* by: thinkingstiff.com
    license: http://creativecommons.org/licenses/by-nc-sa/3.0/us/ */

    var headerUri = 'http://stackoverflow.com/q/848840/918414',
        headerCaption = 'cols, colgroups and css :hover psuedoclass';
        
    document.body.insertAdjacentHTML( 
        'afterBegin',
          '<a href="' + headerUri + '" '
        + 'target="_top" '
        + 'onmouseover="this.style.opacity=\'.95\'" '
        + 'onmouseout="this.style.opacity=\'1\'" '
        + 'style="'
            + 'background-color: black;'
            + 'background-image: linear-gradient( top, rgba( 255, 255, 255, .3), rgba( 255, 255, 255, 0) );'
            + 'background-image: -webkit-linear-gradient( top, rgba( 255, 255, 255, .3), rgba( 255, 255, 255, 0) );'
            + 'background-image: -moz-linear-gradient( top, rgba( 255, 255, 255, .3), rgba( 255, 255, 255, 0) );'
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            + 'background-image: -ms-linear-gradient( top, rgba( 255, 255, 255, .3), rgba( 255, 255, 255, 0) );'
            + 'border: 1px solid black;'
            + 'border-radius: 2px;'
            + 'color: white;'
            + 'display: block;'
            + 'font: normal 15px/26px Helvetica, Verdana, Tahoma;'
            + 'height: 26px;'
            + 'left: 0px;'
            + 'opacity: 1;'
            + 'overflow: hidden;'
            + 'padding: 2px 8px;'
            + 'position: fixed;'
            + 'right: 0px;'
            + 'text-decoration: none;'
            + 'text-overflow: ellipsis;'
            + 'text-shadow: -1px -1px black;'
            + 'top: 0px;'
            + 'white-space: nowrap;'
            + 'z-index: 9999;'
        + '"><img '
        + 'style="' 
            + 'display: block;'
            + 'float: left;'
            + 'margin-right: 8px;" '
        + 'src="http://thinkingstiff.com/images/stackoverflow.png" />'
        + headerCaption
        + '</a>'
        );

    document.body.insertAdjacentHTML( 
        'afterBegin', 
        '<a href="http://thinkingstiff.com" '
        + 'target="_top" '
        + 'onmouseover="this.style.opacity=\'.95\'" '
        + 'onmouseout="this.style.opacity=\'1\'" '
        + 'style="'
            + 'background-color: black;'
            + 'background-image: linear-gradient( top, rgba( 255, 255, 255, .3), rgba( 255, 255, 255, 0) );'
            + 'background-image: -webkit-linear-gradient( top, rgba( 255, 255, 255, .3), rgba( 255, 255, 255, 0) );'
            + 'background-image: -moz-linear-gradient( top, rgba( 255, 255, 255, .3), rgba( 255, 255, 255, 0) );'
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            + 'background-image: -ms-linear-gradient( top, rgba( 255, 255, 255, .3), rgba( 255, 255, 255, 0) );'
            + 'border: 1px solid black;'
            + 'border-radius: 2px;'
            + 'bottom: 0;'
            + 'color: white;'
            + 'display: block;'
            + 'font-family: Helvetica, Verdana, Tahoma;'
            + 'opacity: 1;'
            + 'padding: 4px 8px;'
            + 'position: fixed;'
            + 'right: 0;'
            + 'text-decoration: none;'
            + 'text-shadow: -1px -1px black;'
            + 'z-index: 999;'
        + '">thinkingstiff.com</a>' 
        ); 

    document.head.insertAdjacentHTML( 'beforeEnd',
        '<style>'
        + 'body { margin-top: 40px !important; }'
        + '</style>'
        );
        
        
    var _gaq = _gaq || [];
    _gaq.push(['_setAccount', 'UA-23915674-6']);
    _gaq.push(['_trackPageview']);

    (function() {
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    </script>

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