表头固定内容可滚动表格的3种实现方法
有时候，我们在开发前端页面过程中，可能会用到这种表格：表头固定不动，表格内容（<tbody>）需要竖直滚动。
像这样的：
还有这样的：
通过研究，我大致总结了以下三种实现办法供大家参考，如果有错误之处敬请指正，也欢迎拍砖！！
一、表格总宽度自动，每列宽度设置统一用<colgroup>设置
这种实现方法最简单，只需要用两个表格，一个表格作为表头，另一个表格用<div>包裹并设置该<div>的高度固定，高度溢出可滚动即可。两个表格的列宽用相同的<colgroup>固定列宽值，需要注意的是滚动条会占用一定的宽度，一般是：17px，所以在表头需要特别处理一下，不然表格就不能对齐了。大家看代码，最简单的办法是表头单独空一列和下面的表格滚动条对齐。
<div class="tableWrap" style="margin:20px;"> <label>可滚动表格——表格宽度自动每列宽度设置<col></label> <table class="table-thead"> <colgroup> <col width="50"> <col width="100"> <col width="150"> <col width="17"> </colgroup> <thead> <tr> <th>序号</th> <th>账户名称</th> <th>账户编号</th> <th></th> </tr> </thead> </table> <div class="comTbody"> <table class="table-tbody" style="border-top: 0;"> <colgroup> <col width="50"> <col width="100"> <col width="150"> </colgroup> <tbody> <tr> <td>1</td> <td>中国电信</td> <td>12312312313132</td> </tr> <tr> <td>1</td> <td>中国电信</td> <td>12312312313132</td> </tr> <tr> <td>1</td> <td>中国电信</td> <td>12312312313132</td> </tr> <tr> <td>1</td> <td>中国电信</td> <td>12312312313132</td> </tr> <tr> <td>1</td> <td>中国电信</td> <td>12312312313132</td> </tr> </tbody> </table> </div> </div>
第一种方法是我自己为了快速实现采用的办法，过后我想起来经常看到的数据表格（dataGrid），也是表头固定，内容可以滚动，比如嘴上那两张图片分别是：kendo UI——grid、easyUI——dataGrid 。这样的表格看起来挺漂亮的，我研究了一下，发现它们两种有各自的实现方式。这两种表格在实际运用中因为绑定了很多JS事件，所以表格嵌套的层级很多，下面我为了更清晰的展示给大家，简化了嵌套。
二、表格宽度100%，列宽度统一用<colgroup>设置————参考Kendo UI——grid
<label>可滚动表格——表格宽度100%，列宽度设置<col></label> <div class="table-wrap"> <div class="table-head"> <div class="table-head-wrap"> <table class="grid"> <colgroup> <col style="width:80px"> <col> <col> <col style="width:150px"> </colgroup> <thead> <tr> <th> <span class="tab-link">序号</span> </th> <th> <span class="tab-link">姓名</span> </th> <th> <span class="tab-link">年龄</span> </th> <th> <span class="tab-link">地址</span> </th> </tr> </thead> </table> </div> </div> <div class="table-content"> <table class="grid"> <colgroup> <col style="width:80px"> <col> <col> <col style="width:150px"> </colgroup> <tbody> <tr> <td> <div>001</div> </td> <td> <div>小明</div> </td> <td> <div>23</div> </td> <td> <div>上海</div> </td> </tr> <tr> <td> <div>001</div> </td> <td> <div>小明</div> </td> <td> <div>23</div> </td> <td> <div>上海</div> </td> </tr> <tr> <td> <div>001</div> </td> <td> <div>小明</div> </td> <td> <div>23</div> </td> <td> <div>上海</div> </td> </tr> <tr> <td> <div>001</div> </td> <td> <div>小明</div> </td> <td> <div>23</div> </td> <td> <div>上海</div> </td> </tr> <tr> <td> <div>001</div> </td> <td> <div>小明</div> </td> <td> <div>23</div> </td> <td> <div>上海</div> </td> </tr> </tbody> </table> </div> </div>
这里表格添加了一个样式：table-layout: fixed; 列宽由表格宽度和列宽度设定。这种方法适用于，表格宽度固定。
三、表格宽度自动，列宽度精确固定设置————参考easyUI——dataGrid
<div class="data-grid"> <div class="data-view"> <div class="grid-head"> <div class="grid-head-inner"> <table class="data-table"> <tbody> <tr class="data-table-row"> <td> <div class="datagrid-cell cell-c1"> <div>Item ID</div> </div> </td> <td> <div class="datagrid-cell cell-c2"> <div>Product</div> </div> </td> <td> <div class="datagrid-cell cell-c3"> <div>List Price</div> </div> </td> <td> <div class="datagrid-cell cell-c4"> <div>Unit Cost</div> </div> </td> <td> <div class="datagrid-cell cell-c5"> <div>Attribute</div> </div> </td> </tr> </tbody> </table> </div> </div> <div class="grid-body"> <table class="datagrid-btable"> <tbody> <tr> <td> <div class="datagrid-cell cell-c1"> <span>EST-1</span> </div> </td> <td> <div class="datagrid-cell cell-c2"> <span>FI-SW-01</span> </div> </td> <td> <div class="datagrid-cell cell-c3"> <span>36.5</span> </div> </td> <td> <div class="datagrid-cell cell-c4"> <span>10</span> </div> </td> <td> <div class="datagrid-cell cell-c5"> <span>Large</span> </div> </td> </tr> <tr> <td> <div class="datagrid-cell cell-c1"> <span>EST-1</span> </div> </td> <td> <div class="datagrid-cell cell-c2"> <span>FI-SW-01</span> </div> </td> <td> <div class="datagrid-cell cell-c3"> <span>36.5</span> </div> </td> <td> <div class="datagrid-cell cell-c4"> <span>10</span> </div> </td> <td> <div class="datagrid-cell cell-c5"> <span>Large</span> </div> </td> </tr> <tr> <td> <div class="datagrid-cell cell-c1"> <span>EST-1</span> </div> </td> <td> <div class="datagrid-cell cell-c2"> <span>FI-SW-01</span> </div> </td> <td> <div class="datagrid-cell cell-c3"> <span>36.5</span> </div> </td> <td> <div class="datagrid-cell cell-c4"> <span>10</span> </div> </td> <td> <div class="datagrid-cell cell-c5"> <span>Large</span> </div> </td> </tr> <tr> <td> <div class="datagrid-cell cell-c1"> <span>EST-1</span> </div> </td> <td> <div class="datagrid-cell cell-c2"> <span>FI-SW-01</span> </div> </td> <td> <div class="datagrid-cell cell-c3"> <span>36.5</span> </div> </td> <td> <div class="datagrid-cell cell-c4"> <span>10</span> </div> </td> <td> <div class="datagrid-cell cell-c5"> <span>Large</span> </div> </td> </tr> <tr> <td> <div class="datagrid-cell cell-c1"> <span>EST-1</span> </div> </td> <td> <div class="datagrid-cell cell-c2"> <span>FI-SW-01</span> </div> </td> <td> <div class="datagrid-cell cell-c3"> <span>36.5</span> </div> </td> <td> <div class="datagrid-cell cell-c4"> <span>10</span> </div> </td> <td> <div class="datagrid-cell cell-c5"> <span>Large</span> </div> </td> </tr> <tr> <td> <div class="datagrid-cell cell-c1"> <span>EST-1</span> </div> </td> <td> <div class="datagrid-cell cell-c2"> <span>FI-SW-01</span> </div> </td> <td> <div class="datagrid-cell cell-c3"> <span>36.5</span> </div> </td> <td> <div class="datagrid-cell cell-c4"> <span>10</span> </div> </td> <td> <div class="datagrid-cell cell-c5"> <span>Large</span> </div> </td> </tr> <tr> <td> <div class="datagrid-cell cell-c1"> <span>EST-1</span> </div> </td> <td> <div class="datagrid-cell cell-c2"> <span>FI-SW-01</span> </div> </td> <td> <div class="datagrid-cell cell-c3"> <span>36.5</span> </div> </td> <td> <div class="datagrid-cell cell-c4"> <span>10</span> </div> </td> <td> <div class="datagrid-cell cell-c5"> <span>Large</span> </div> </td> </tr> </tbody> </table> </div> </div> </div>
这种方法适用于每列宽度固定的表格。
这里是我写的源码：点我下载
