php – 将表放在数据表中的DataTables

我的代码：

foreach($campaigns as $campaign):?>
<tr>
    <td><?php echo $campaign['name']?></td>
    <td><?php echo date('m/d/Y',strtotime($campaign['created_date']))?></td>
    <td><?php echo $campaign['country_id']?></td>
    <td><?php echo $campaign['domain_getter_type']?></td>
    <td><?php echo $campaign['domain_metrics']?> <?php echo $campaign['metric_filter_setting_id']?></td>
    <td><?php echo $campaign['domain_contact']?></td>
    <td>0</td>
</tr>
<!--campaign runs-->
<tr>
    <td colspan="99">
        <table>
            <thead>
                <tr>
                    <th>dfad</th>
                    <th>t3wtaw3 On</th>
                    <th>dfw</th>
                    <th>Domain dawfd</th>
                    <th>p3p3</th>
                </tr>
            </thead>
            <tr>
                <td>1</td>
                <td>2</td>
                <td>3</td>
                <td>4</td>
                <td>5</td>
            </tr>
            <tr>
                <td>1</td>
                <td>2</td>
                <td>3</td>
                <td>4</td>
                <td>5</td>
            </tr>
            <tr>
                <td>1</td>
                <td>2</td>
                <td>3</td>
                <td>4</td>
                <td>5</td>
            </tr>
        </table>
    </td>
</tr>
<?php endforeach;?>

在每行数据之后,我想放置一个可以显示或隐藏的隐藏表,其中包含有关该活动的每个特定运行的其他信息.

我在chrome中遇到此错误：未捕获的TypeError：无法读取未定义的属性“className”