突出显示具有不同值的表列td

Highlighting table column td with different values

本文关键字：td 显示更新时间：2024-01-31

我有一个显示日志的html <table>，我想在整个表上循环，突出显示一行中具有不同值的任何相邻单元格<tr>。

我正在尝试比较特定行中<td>中的任意两个值。我已经设法做了一些事情，但只做了两个专栏。

下面是表结构的html示例代码：

    <table id="coa_history_data">
    <tr>
      <th>old Name</th>
      <th>New Name</th>
      <th>Old Phone</th>
      <th>New Phone</th>
      <th>Old Age</th>
      <th>New Age</th>
    </tr>
    <tbody>
    <tr class="data-in-table">
       <td>Alphy</td>
       <td>Alphy</td>
       <td>015</td> //should be highlited
       <td>016</td> //should be highlited
       <td>23</td> //should be highlited
       <td>24</td> //should be highlited
    </tr>
  <tr>
       <td>Tom</td>
       <td>Tom</td>
       <td>12</td>
       <td>12</td>
       <td>65</td> //should be highlited
       <td>30</td> //should be highlited
    </tr>
  <tr>
       <td>will</td>
       <td>will</td>
       <td>45</td>
       <td>45</td>
       <td>20</td>
       <td>20</td>
    </tr>
  </tbody>
</table>

我的JavaScript代码：

 $("#coa_history_data tbody tr.data-in-table").each(function() {
      var $firstCell = $('td:eq(3)', this);
    var $thirdCell = $('td:eq(4)', this);
    if($firstCell.text() === $thirdCell.text()){
    }else{
       $firstCell.css('backgroundColor','yellow');
        $thirdCell.css('backgroundColor','yellow');  
    }
});

我想要一些建议，如何处理？

为了独立于列的数量，我建议如下。

http://jsfiddle.net/hA5G8/

js

$("#coa_history_data tbody tr.data-in-table").each(function () {
    $(this).find('td').each(function (index) {
        var currentCell = $(this);
        var nextCell = $(this).next('td').length > 0 ? $(this).next('td') : null;
        if (index%2==0&&nextCell && currentCell.text() !== nextCell.text()) {
            currentCell.css('backgroundColor', 'yellow');
            nextCell.css('backgroundColor', 'yellow');
        }
    });
});

html

<table id="coa_history_data">
    <tr class="data-in-table">
        <th>old Name</th>
        <th>New Name</th>
        <th>Old Phone</th>
        <th>New Phone</th>
        <th>Old Age</th>
        <th>New Age</th>
    </tr>
    <tbody>
        <tr class="data-in-table">
            <td>Alphy</td>
            <td>Alphy</td>
            <td>015</td>//should be highlited
            <td>016</td>//should be highlited
            <td>23</td>//should be highlited
            <td>24</td>//should be highlited</tr>
        <tr class="data-in-table">
            <td>Tom</td>
            <td>Tom</td>
            <td>12</td>
            <td>12</td>
            <td>65</td>//should be highlited
            <td>30</td>//should be highlited</tr>
        <tr class="data-in-table">
            <td>will</td>
            <td>will</td>
            <td>45</td>
            <td>45</td>
            <td>20</td>
            <td>20</td>
        </tr>
    </tbody>
</table>

下面是我的解决方案：

<table id="coa_history_data">
    <tr>
      <th>old Name</th>
      <th>New Name</th>
      <th>Old Phone</th>
      <th>New Phone</th>
      <th>Old Age</th>
      <th>New Age</th>
    </tr>
    <tbody>
    <tr class="data-in-table">
       <td>Alphy</td>
       <td>Alphy</td>
       <td>015</td>
       <td>016</td>
       <td>23</td>
       <td>24</td>
    </tr>
  <tr class="data-in-table">
       <td>Tom</td>
       <td>Tom</td>
       <td>12</td>
       <td>12</td>
       <td>65</td>
       <td>30</td>
    </tr>
  <tr class="data-in-table">
       <td>will</td>
       <td>will</td>
       <td>45</td>
       <td>45</td>
       <td>20</td>
       <td>20</td>
    </tr>
  </tbody>
</table>

JScript:

$("#coa_history_data tbody tr.data-in-table").each(function() {
      var $firstCell = $('td:eq(2)', this);
      var $secondCell = $('td:eq(3)', this);
      var $thirdCell = $('td:eq(4)', this);
      var $fourthCell = $('td:eq(5)', this);
    if($firstCell.text() != $secondCell.text()){
       $firstCell.css('backgroundColor','yellow');
        $secondCell.css('backgroundColor','yellow');  
    }
    if($thirdCell.text() != $fourthCell.text()){
       $thirdCell.css('backgroundColor','orange');
        $fourthCell.css('backgroundColor','orange');  
    }
});

小提琴：http://jsfiddle.net/3CdyH/

好的，现在我明白了，您想突出显示特定字段<td>。

更好的解决方案是在创建表时执行

我确信这种方法的性能更好，我在JsPerf 中进行了测试

因此，以这种方式创建表格：

重要信息：当然，您会有普通值，所以将其放在<td>的值变量上。

    var content = [];
    for (var i=0; i < len; i++){
      if (i==0) //i dont know what is your condition to the tr be 'data-in-table' so change if needs
        class = "data-in-table";
      content.push("<tr class='"+class+"'>         "+
                   "<td>will</td>                  "+
                   "<td>will</td>                  "+
                   "<td>"+value+"</td>             "+
                   "<td>"+value+"</td>             "+
                   "<td class=hlight>"+value+"</td>"+
                   "<td class=hlight>"+value+"</td>"+
                   "</tr>");
    }
    document.getElementById('your_table_wrapper').innerHTML = "<table id=coa_history_data>"+
                                                              "<tr>                       "+
                                                              "<th>old Name</th>          "+
                                                              "<th>New Name</th>          "+
                                                              "<th>Old Phone</th>         "+
                                                              "<th>New Phone</th>         "+
                                                              "<th>Old Age</th>           "+
                                                              "<th>New Age</th>           "+
                                                              "</tr>                      "+
                                                              "<tbody>                    "+
                                                              content.join('')+
                                                              "</tbody>                   "+
                                                              "</table>;

使用这个CSS:

.hlight {
  background-color: yellow;
}