在我看来，最好的jQuery插件之一是DataTables。

它也有一个扩展的固定头，它是非常容易实现。

摘自网站:

HTML:

<table id="example" class="display" cellspacing="0" width="100%">
    <thead>
        <tr>
            <th>Name</th>
            <th>Position</th>
            <th>Office</th>
            <th>Age</th>
            <th>Start date</th>
            <th>Salary</th>
        </tr>
    </thead>

    <tfoot>
        <tr>
            <th>Name</th>
            <th>Position</th>
            <th>Office</th>
            <th>Age</th>
            <th>Start date</th>
            <th>Salary</th>
        </tr>
    </tfoot>

    <tbody>
        <tr>
            <td>Tiger Nixon</td>
            <td>System Architect</td>
            <td>Edinburgh</td>
            <td>61</td>
            <td>2011/04/25</td>
            <td>$320,800</td>
        </tr>
        <tr>
            <td>Garrett Winters</td>
            <td>Accountant</td>
            <td>Tokyo</td>
            <td>63</td>
            <td>2011/07/25</td>
            <td>$170,750</td>
        </tr>
        <tr>
            <td>Ashton Cox</td>
            <td>Junior Technical Author</td>
            <td>San Francisco</td>
            <td>66</td>
            <td>2009/01/12</td>
            <td>$86,000</td>
        </tr>
  </tbody>
</table>

JavaScript:

$(document).ready(function() {
    var table = $('#example').DataTable();

    new $.fn.dataTable.FixedHeader( table );
} );

但是你可以用最简单的方法来创建一个scrollable <tbody>:

//configure table with fixed header and scrolling rows
$('#example').DataTable({
    scrollY: 400,
    scrollCollapse: true,
    paging: false,
    searching: false,
    ordering: false,
    info: false
});

更新

对于更新的和仍然维护的库尝试jquery。而不是floatThead(正如Bob Jordan在评论中提到的)。

旧的答案

这是一个很古老的答案，下面提到的图书馆已经不再维护了。

我在GitHub上使用StickyTableHeaders，它像魅力一样工作!

我必须添加这个css，使头部不透明。

table#stickyHeader thead {
  border-top: none;
  border-bottom: none;
  background-color: #FFF;
}

table { overflow-y: auto; height: 50vh; /* !!! HEIGHT MUST BE IN [ vh ] !!! */ } thead th { background-color: white; position: sticky; top: 0; } <table> <thead> <tr><th>TH 1</th><th>TH 2</th></tr> </thead> <tbody> <tr><td>A1</td><td>A2</td></tr> <tr><td>B1</td><td>B2</td></tr> <tr><td>C1</td><td>C2</td></tr> <tr><td>D1</td><td>D2</td></tr> <tr><td>E1</td><td>E2</td></tr> <tr><td>F1</td><td>F2</td></tr> <tr><td>G1</td><td>G2</td></tr> <tr><td>H1</td><td>H2</td></tr> <tr><td>I1</td><td>I2</td></tr> <tr><td>J1</td><td>J2</td></tr> <tr><td>K1</td><td>K2</td></tr> <tr><td>L1</td><td>L2</td></tr> <tr><td>M1</td><td>M2</td></tr> <tr><td>N1</td><td>N2</td></tr> <tr><td>O1</td><td>O2</td></tr> <tr><td>P1</td><td>P2</td></tr> <tr><td>Q1</td><td>Q2</td></tr> <tr><td>R1</td><td>R2</td></tr> <tr><td>S1</td><td>S2</td></tr> <tr><td>T1</td><td>T2</td></tr> <tr><td>U1</td><td>U2</td></tr> <tr><td>V1</td><td>V2</td></tr> <tr><td>W1</td><td>W2</td></tr> <tr><td>X1</td><td>X2</td></tr> <tr><td>Y1</td><td>Y2</td></tr> <tr><td>Z1</td><td>Z2</td></tr> </tbody> </table>

你不需要js。重要的是设置表格高度[vh]

刚发现一个很酷的解决方案使用网格! 这是我用过的，效果很好:

tbody tr, thead tr {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr; // or whatever division you wanna do
}

tbody {
  height: 300px; // or whatever height
  width: 100%;
  overflow-y: auto;
  display: block;
}

演示: https://codesandbox.io/s/table-with-inner-body-scroll-hggq7x

清洁解决方案(仅适用于CSS)

.table-fixed tbody {
    display:block;
    height:85vh;
    overflow:auto;
}
.table-fixed thead, .table-fixed tbody tr {
    display:table;
    width:100%;
}


<table class="table table-striped table-fixed">
    <thead>
        <tr align="center">
            <th>Col 1</th>
            <th>Col 2</th>
            <th>Col 3</th>
            <th>Col 4</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>Content 1</td>
            <td>Content 1</td>
            <td>Content 1</td>
            <td>Content 1</td>
        </tr>
        <tr>
            <td>Longer Content 1</td>
            <td>Longer Content 1</td>
            <td>Longer Content 1</td>
            <td>Longer Content 1</td>
        </tr>
    </tbody
</table

你应该尝试使用"display:block;"到tbody，因为现在它是内联块，为了设置高度，元素应该是"block"