使用jQuery删除html表中的空列

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我有一个看起来像这样的html表。单击按钮时，应删除空白列。在我的示例中，将删除列07：00,07：15,07：30、07：45、18：00、18：15当前，我的函数removeEmptyColumns（）不起作用（不删除任何列） 。可能是因为空间吗？ （）。必须对其进行修改以使其起作用？

https://jsfiddle.net/Smolo/d2nyefuL/

<button onclick="removeEmptyColumns()">Remove empty columns</button>

<table id="mytable" class="rg-table zebra" style="width: 1838px;" title="" summary=""><caption class="rg-header"><span id="rg-hed" class="rg-hed" title="ID: rg-hed">25.05.2020</span> <span id="abc" class="xyz" title=""></span></caption>
<thead>
<tr>
<th class=" " style="width: 96px;">First Column</th>
<th class=" " style="width: 10px;">07:00</th>
<th class=" " style="width: 46px;">07:15</th>
<th class=" " style="width: 46px;">07:30</th>
<th class=" " style="width: 46px;">07:45</th>
<th class=" " style="width: 46px;">08:00</th>
<th class=" " style="width: 46px;">08:15</th>
<th class=" " style="width: 46px;">08:30</th>
<th class=" " style="width: 46px;">08:45</th>
<th class=" " style="width: 46px;">09:00</th>
<th class=" " style="width: 46px;">09:15</th>
<th class=" " style="width: 46px;">09:30</th>
<th class=" " style="width: 46px;">09:45</th>
<th class=" " style="width: 46px;">10:00</th>
<th class=" " style="width: 46px;">10:15</th>
<th class=" " style="width: 46px;">10:30</th>
<th class=" " style="width: 46px;">10:45</th>
<th class=" " style="width: 46px;">11:00</th>
<th class=" " style="width: 46px;">11:15</th>
<th class=" " style="width: 46px;">11:30</th>
<th class=" " style="width: 46px;">11:45</th>
<th class=" " style="width: 46px;">12:00</th>
<th class=" " style="width: 46px;">12:15</th>
<th class=" " style="width: 46px;">12:30</th>
<th class=" " style="width: 46px;">12:45</th>
<th class=" " style="width: 46px;">13:00</th>
<th class=" " style="width: 46px;">13:15</th>
<th class=" " style="width: 46px;">13:30</th>
<th class=" " style="width: 46px;">13:45</th>
<th class=" " style="width: 46px;">14:00</th>
<th class=" " style="width: 46px;">14:15</th>
<th class=" " style="width: 46px;">14:45</th>
<th class=" " style="width: 46px;">17:45</th>
<th class=" " style="width: 46px;">18:00</th>
<th class=" " style="width: 46px;">18:15</th>
</tr>
</thead>
<tbody>
<tr class="">
<td class=" " style="background-color: #ffffff; width: 96px;">a</td>
<td class=" " style="width: 10px;" data-title="07:00">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="07:15">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="07:30">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="07:45">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="08:00">&nbsp;</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="08:15">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="08:30">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="08:45">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="09:00">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="09:15">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="09:30">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="09:45">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="10:00">abc</td>
<td class=" " style="width: 46px;" data-title="10:15">&nbsp;</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="10:30">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="10:45">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="11:00">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="11:15">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="11:30">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="11:45">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="12:00">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="12:15">abc</td>
<td class=" " style="width: 46px;" data-title="12:30">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="12:45">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="13:00">&nbsp;</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="13:15">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="13:30">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="13:45">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="14:00">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="14:15">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="14:45">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="17:45">abc</td>
<td class=" " style="width: 46px;" data-title="20:30">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="20:45">&nbsp;</td>
</tr>
<tr class="">
<td class=" " style="background-color: #ffffff; width: 96px;">b</td>
<td class=" " style="width: 10px;" data-title="07:00">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="07:15">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="07:30">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="07:45">&nbsp;</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="08:00">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="08:15">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="08:30">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="08:45">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="09:00">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="09:15">abc</td>
<td class=" " style="width: 46px;" data-title="09:30">&nbsp;</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="09:45">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="10:00">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="10:15">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="10:30">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="10:45">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="11:00">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="11:15">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="11:30">abc</td>
<td class=" " style="width: 46px;" data-title="11:45">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="12:00">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="12:15">&nbsp;</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="12:30">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="12:45">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="13:00">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="13:15">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="13:30">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="13:45">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="14:00">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="14:15">abc</td>
<td class=" " style="width: 46px;" data-title="14:45">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="17:45">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="20:30">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="20:45">&nbsp;</td>
</tr>
<tr class="">
<td class=" " style="background-color: #ffffff; width: 96px;">c</td>
<td class=" " style="width: 10px;" data-title="07:00">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="07:15">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="07:30">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="07:45">&nbsp;</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="08:00">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="08:15">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="08:30">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="08:45">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="09:00">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="09:15">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="09:30">abc</td>
<td class=" " style="width: 46px;" data-title="09:45">&nbsp;</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="10:00">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="10:15">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="10:30">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="10:45">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="11:00">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="11:15">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="11:30">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="11:45">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="12:00">abc</td>
<td class=" " style="background-color: #ffffdc; width: 46px;" data-title="12:15">abc</td>
<td class=" " style="width: 46px;" data-title="12:30">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="12:45">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="13:00">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="13:15">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="13:30">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="13:45">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="14:00">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="14:15">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="14:45">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="17:45">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="20:30">&nbsp;</td>
<td class=" " style="width: 46px;" data-title="20:45">&nbsp;</td>
</tr>
</tbody>
</table>

JS函数：

function removeEmptyColumns() 

    $('#mytable tr th').each(function(i) 
   //select all td in this column
    var tds = $(this).parents('table')
          .find('tr td:nth-child(' + (i + 1) + ')');
    //check if all the cells in this column are empty
    if(tds.length == tds.filter(':empty').length)  
        //hide header
        $(this).hide();
        //hide cells
        tds.hide();
     
    );
答案

这里是一种通过修剪空白删除所有内容的方法。

function removeEmptyColumns() 

  $('#mytable tr th').each(function(i) 
    //select all td in this column
    var tds = $(this).parents('table')
      .find(`tr td:nth-child($i + 1)`);
    //check if all the cells in this column are empty
    if (tds.toArray().every((td) => 
        // Empty strings return 'false' - trim whitespace before.
        return !td.textContent.trim()
      )) 
      //hide header
      $(this).hide();
      //hide cells
      tds.hide();
    
  );


<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<button onclick="removeEmptyColumns()">Remove empty columns</button>

<table id="mytable" class="rg-table zebra" style="width: 1838px;" title="" summary="">
  <caption class="rg-header"><span id="rg-hed" class="rg-hed" title="ID: rg-hed">25.05.2020</span> <span id="abc" class="xyz" title=""></span></caption>
  <thead>
    <tr>
      <th class=" " style="width: 96px;">First Column</th>
      <th class=" " style="width: 10px;">07:00</th>
      <th class=" " style="width: 46px;">07:15</th>
      <th class=" " style="width: 46px;">07:30</th>
      <th class=" " style="width: 46px;">07:45</th>
      <th class=" " style="width: 46px;">08:00</th>
      <th class=" " style="width: 46px;">08:15</th>
      <th class=" " style="width: 46px;">08:30</th>
      <th class=" " style="width: 46px;">08:45</th>
      <th class=" " style="width: 46px;">09:00</th>
      <th class=" " style="width: 46px;">09:15</th>
      <th class=" " style="width: 46px;">09:30</th>
      <th class=" " style="width: 46px;">09:45</th>
      <th class=" " style="width: 46px;">10:00</th>
      <th class=" " style="width: 46px;">10:15</th>
      <th class=" " style="width: 46px;">10:30</th>
      <th class=" " style="width: 46px;">10:45</th>
      <th class=" " style="width: 46px;">11:00</th>
      <th class=" " style="width: 46px;">11:15</th>
      <th class=" " style="width: 46px;">11:30</th>
      <th class=" " style="width: 46px;">11:45</th>
      <th class=" " style="width: 46px;">12:00</th>
      <th class=" " style="width: 46px;">12:15</th>
      <th class=" " style="width: 46px;">12:30</th>
      <th class=" " style="width: 46px;">12:45</th>
      <th class=" " style="width: 46px;">13:00</th>
      <th class=" " style="width: 46px;">13:15</th>
      <th class=" " style="width: 46px;">13:30</th>
      <th class=" " style="width: 46px;">13:45</th>
      <th class=" " style="width: 46px;">14:00</th>
      <th class=" " style="width: 46px;">14:15</th>
      <th class=" " style="width: 46px;">14:45</th>
      <th class=" " style="width: 46px;">17:45</th>
      <th class=" " style="width: 46px;">18:00</th>
      <th class=" " style="width: 46px;">18:15</th>
    </tr>
  </thead>
  <tbody>
    <tr class="">
      <td class=" " style="background-color: #ffffff; width: 96px;">a</td>
      <td class=" " style="width: 10px;" data-title="07:00">&nbsp;</td>
      <td class=" " style="width: 46px;" data-title="07:15">&nbsp;</td>
      <td class=" " style="width: 46px;" data-title="07:30">&nbsp;</td>
      <td class=" " style="width: 46px;" data-title="07:45">&nbsp;</td>
      <td class=" " style="width: 46px;" data-title="08:00">&nbsp;</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="08:15">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="08:30">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="08:45">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="09:00">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="09:15">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="09:30">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="09:45">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="10:00">abc</td>
      <td class=" " style="width: 46px;" data-title="10:15">&nbsp;</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="10:30">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="10:45">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="11:00">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="11:15">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="11:30">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="11:45">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="12:00">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="12:15">abc</td>
      <td class=" " style="width: 46px;" data-title="12:30">&nbsp;</td>
      <td class=" " style="width: 46px;" data-title="12:45">&nbsp;</td>
      <td class=" " style="width: 46px;" data-title="13:00">&nbsp;</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="13:15">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="13:30">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="13:45">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="14:00">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="14:15">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="14:45">abc</td>
      <td class=" " style="background-color: #ffffdc; width: 46px;" data-title="17:45">abc</td>
      <td class=" " style="width: 46px;" data-title="20:30">&nbsp;</td>
      <td class=" " style="width: 46px;" data-title="20:45">&nbsp;</td>
    </tr>
    <tr class="">
      <td class=" " style="background-color: #ffffff; width: 96px;">b</td>
      <td class=" " style="width: 10px;" data-title="07:00">&nbsp;</td>
      <td class=" " style="width: 46px;" data-title="07:15">&nbsp;</td>
      <td class=" " styl
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