我得到一个类似的错误。问题是标题行不正确。当我执行下面的标题行时，我遇到的问题得到了解决。

<table id="example" class="table table-striped table-bordered" style="width:100%">
        <thead>
    <tr>
                <th colspan="6">Common Title</th>
            </tr>
            <tr>
                <th>Name</th>
                <th>Position</th>
                <th>Office</th>
                <th>Age</th>
                <th>Start date</th>
                <th>Salary</th>
            </tr>
        </thead>
        <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>
</tbody>
</table>

我有一个动态生成的，但格式糟糕的表，有一个错字。我错误地在另一个<td>内复制了一个<td>标签。列数匹配。我有<thead>和<tbody>标签。所有内容都匹配，除了这个我一时没有注意到的小错误，因为我的专栏中有很多链接和图像标签。

在我的例子中，这个错误的原因是我有两个具有相同id名称但表结构不同的表，因为我习惯复制-粘贴表代码。请确保每张桌子有不同的id。

<table id="tabel_data"> <thead> <tr> <th>heading 1</th> <th>heading 2</th> <th>heading 3</th> <th>heading 4</th> <th>heading 5</th> </tr> </thead> <tbody> <tr> <td>data-1</td> <td>data-2</td> <td>data-3</td> <td>data-4</td> <td>data-5</td> </tr> </tbody> </table> <table id="tabel_data"> <thead> <tr> <th>heading 1</th> <th>heading 2</th> <th>heading 3</th> </tr> </thead> <tbody> <tr> <td>data-1</td> <td>data-2</td> <td>data-3</td> </tr> </tbody> </table>

我在通过脚手架生成器创建的Rails视图中使用DOM数据时遇到了同样的问题。默认情况下，视图为最后三列(包含显示、隐藏和销毁记录的链接)省略<th>元素。我发现，如果我在<thead>内的<th>元素中为这些列添加标题，它就解决了这个问题。

I can't say if this is the same problem you're having since I can't see your html. If it is not the same problem, you can use the chrome debugger to figure out which column it is erroring out on by clicking on the error in the console (which will take you to the code it is failing on), then adding a conditional breakpoint (at col==undefined). When it stops you can check the variable i to see which column it is currently on which can help you figure out what is different about that column from the others. Hope that helps!

对于列标题，您需要将行包装为<thead>，对于行包装为<tbody>。还要确保您有匹配的编号。列标题<th>，就像对td

发生这种情况的另一个原因是DataTable初始化中的columns参数。

列的数量必须与标题相匹配

"columns" : [ {
                "width" : "30%"
            }, {
                "width" : "15%"
            }, {
                "width" : "15%"
            }, {
                "width" : "30%"
            } ]

我有7列

<th>Full Name</th>
<th>Phone Number</th>
<th>Vehicle</th>
<th>Home Location</th>
<th>Tags</th>
<th>Current Location</th>
<th>Serving Route</th>