纯css实现table固定首行、首列以及最后一列冻结

转载:纯css实现table固定首行、首列以及最后一列冻结 - IT民工郑小江 - 博客园 (cnblogs.com)

postion的sticky粘性定位
  粘性定位可以被认为是相对定位和固定定位的混合。元素在跨越特定阈值前为相对定位,之后为固定定位。

sticky元素会“固定”在离它最近的一个拥有“滚动机制”的祖先上(当该祖先的overflow是hidden、scroll、auto、overlay时),即便这个祖先不是最近的真实可滚动祖先。

 

table-layout的fixed
  table-layout css属性定义了用于布局表格单元格,行和列的算法。值可以是:auto、fixed。

 

auto

      表格和单元格的宽度取决于其包含的内容。

fixed

  表格宽度通过表格的宽度来设置,某一列的宽度仅由该列首行的单元格决定,其他行单元格的宽度不会影响整列的宽度。

   分析:在表格中,某些列需要指定不同的宽度,所以表格的table-layout css属性需要设置为fixed。

 

页面代码

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<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title></title>
        <style>
            .table_wrap {
                width: 100%;
                height: 100px;
                overflow: auto;
                border-bottom:1px solid #61dafb;
            }
 
            table {
                table-layout: fixed;
                width: 100%;
                border-collapse: separate;
                border-spacing: 0;
                border: 1px solid #DDDDDD;
            }
 
            /* 表格th/td样式 */
            td,th {
                width: 150px;
                box-sizing: border-box;
                border-right: 1px solid #DDDDDD;
                border-bottom: 1px solid #DDDDDD;
                /*超出长度...*/
                overflow: hidden;
                white-space: nowrap;
                text-overflow: ellipsis;
                height: 30px;
 
            }
 
            /* 表头固定 */
            thead tr th {
                position: sticky;
                top: 0;
                background: #F4F4F5;
                height: 30px;
            }
 
            /* 首列固定/最后一列固定*/
            th:first-child,
            th:last-child,
            td:first-child,
            td:last-child {
                position: sticky;
                left: 0;
                background: #F4F4F5;
                text-align: center;
                right: 0px;
                border-left: 1px solid #DDDDDD ;
                width: 100px;
            }
 
            /* 表头首列和最后一列强制最顶层 */
            th:last-child,
            th:first-child {
                z-index: 3;
                /*左上角单元格z-index,切记要设置,不然表格纵向横向滚动时会被该单元格右方或者下方的单元格遮挡*/
                background: #F4F4F5;
            }
        </style>
    </head>
    <body>
        <div className="table_wrap">
            <table>
                <thead>
                    <tr>
                        <th>序号</th>
                        <th>栏目1</th>
                        <th>栏目2</th>
                        <th>栏目3</th>
                        <th>栏目4</th>
                        <th>操作</th>
                    </tr>
                </thead>
                <tbody>
                    <tr>
                        <td>1</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>2</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>3</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>4</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>5</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>6</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>7</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>8</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>9</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>10</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>11</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>12</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>13</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>14</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>15</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>16</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>17</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>18</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>19</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>20</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>21</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>22</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>23</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>24</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>25</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>26</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>27</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
                    <tr>
                        <td>28</td>
                        <td>2</td>
                        <td>3</td>
                        <td>4</td>
                        <td>5</td>
                        <td><a href="#">修改</a></td>
                    </tr>
 
                </tbody>
 
            </table>
 
        </div>
 
    </body>
</html>

  

posted @   奇迹之耀  阅读(3565)  评论(0编辑  收藏  举报
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