jquery - 有没有办法在 JQuery Datatable 中的标题文本旁边显示排序图标？

Question

有没有办法像上图一样在标题文本旁边显示数据表的排序图标？

Answer 1

一种可能是监听 draw.dt event .

每次绘制数据表时，您都可以根据相应列标题的宽度重新定位background-position-x(图标):

// the following extension comes from http://stackoverflow.com/questions/1582534/calculating-text-width
$.fn.textWidth = function(){
  var html_org = $(this).html();
  var html_calc = '<span>' + html_org + '</span>';
  $(this).html(html_calc);
  var width = $(this).find('span:first').width();
  $(this).html(html_org);
  return width;
};

$('#example').on( 'draw.dt', function (e) {
  $('#example thead tr th').each(function(idx, ele) {
    var xPos = parseInt((($(ele).width() + $(ele).textWidth()) / 2) + 20);
    $(ele).css('background-position-x',  xPos + 'px')
  })
});

$('#example').DataTable();

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link rel="stylesheet" href="//cdn.datatables.net/1.10.13/css/jquery.dataTables.min.css">
<script src="//cdn.datatables.net/1.10.13/js/jquery.dataTables.min.js"></script>

<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>
    <tr>
        <td>Cedric Kelly</td>
        <td>Senior Javascript Developer</td>
        <td>Edinburgh</td>
        <td>22</td>
        <td>2012/03/29</td>
        <td>$433,060</td>
    </tr>
    <tr>
        <td>Airi Satou</td>
        <td>Accountant</td>
        <td>Tokyo</td>
        <td>33</td>
        <td>2008/11/28</td>
        <td>$162,700</td>
    </tr>
    <tr>
        <td>Brielle Williamson</td>
        <td>Integration Specialist</td>
        <td>New York</td>
        <td>61</td>
        <td>2012/12/02</td>
        <td>$372,000</td>
    </tr>
    <tr>
        <td>Herrod Chandler</td>
        <td>Sales Assistant</td>
        <td>San Francisco</td>
        <td>59</td>
        <td>2012/08/06</td>
        <td>$137,500</td>
    </tr>
    <tr>
        <td>Rhona Davidson</td>
        <td>Integration Specialist</td>
        <td>Tokyo</td>
        <td>55</td>
        <td>2010/10/14</td>
        <td>$327,900</td>
    </tr>
    <tr>
        <td>Colleen Hurst</td>
        <td>Javascript Developer</td>
        <td>San Francisco</td>
        <td>39</td>
        <td>2009/09/15</td>
        <td>$205,500</td>
    </tr>
    <tr>
        <td>Sonya Frost</td>
        <td>Software Engineer</td>
        <td>Edinburgh</td>
        <td>23</td>
        <td>2008/12/13</td>
        <td>$103,600</td>
    </tr>
    <tr>
        <td>Jena Gaines</td>
        <td>Office Manager</td>
        <td>London</td>
        <td>30</td>
        <td>2008/12/19</td>
        <td>$90,560</td>
    </tr>
    <tr>
        <td>Quinn Flynn</td>
        <td>Support Lead</td>
        <td>Edinburgh</td>
        <td>22</td>
        <td>2013/03/03</td>
        <td>$342,000</td>
    </tr>
    <tr>
        <td>Charde Marshall</td>
        <td>Regional Director</td>
        <td>San Francisco</td>
        <td>36</td>
        <td>2008/10/16</td>
        <td>$470,600</td>
    </tr>
    <tr>
        <td>Haley Kennedy</td>
        <td>Senior Marketing Designer</td>
        <td>London</td>
        <td>43</td>
        <td>2012/12/18</td>
        <td>$313,500</td>
    </tr>
    <tr>
        <td>Tatyana Fitzpatrick</td>
        <td>Regional Director</td>
        <td>London</td>
        <td>19</td>
        <td>2010/03/17</td>
        <td>$385,750</td>
    </tr>
    <tr>
        <td>Michael Silva</td>
        <td>Marketing Designer</td>
        <td>London</td>
        <td>66</td>
        <td>2012/11/27</td>
        <td>$198,500</td>
    </tr>
    <tr>
        <td>Paul Byrd</td>
        <td>Chief Financial Officer (CFO)</td>
        <td>New York</td>
        <td>64</td>
        <td>2010/06/09</td>
        <td>$725,000</td>
    </tr>
    <tr>
        <td>Gloria Little</td>
        <td>Systems Administrator</td>
        <td>New York</td>
        <td>59</td>
        <td>2009/04/10</td>
        <td>$237,500</td>
    </tr>
    <tr>
        <td>Bradley Greer</td>
        <td>Software Engineer</td>
        <td>London</td>
        <td>41</td>
        <td>2012/10/13</td>
        <td>$132,000</td>
    </tr>
    </tbody>
</table>