javascript - 未捕获的类型错误 : Cannot read property 'mData' of undefined

Question

我关注了this使用 DataTables 插件启用多个表(在同一页上)。对于手动表，它可以工作，但对于动态创建的表，它显示以下错误:

Uncaught TypeError: Cannot read property 'mData' of undefined

我的页面脚本:

 $(document).ready(function() {
         $('table.datatable').dataTable( {
            'bSort': false,
            'aoColumns': [
                  { sWidth: "45%", bSearchable: false, bSortable: false },
                  { sWidth: "45%", bSearchable: false, bSortable: false },
                  { sWidth: "10%", bSearchable: false, bSortable: false }
            ],
            "scrollY":        "200px",
            "scrollCollapse": false,
            "info":           true,
            "paging":         true
        } );
    } );

my HTML first table:

<table class="table table-striped table-bordered datatable">
    <thead>
        <tr>
            <th>  Issue      </th>
            <th>  Product      </th>
            <th>  Qty      </th>
            <th class="text-right"> Paid    </th>
            <th class="text-right"> Balance    </th>
            <th class="text-right"> Total    </th>
        </tr>   
    </thead><!-- table head -->
    <tbody>
        <tr>
            <td>May 20, 2015</a></td>
            <td>Normal Sim</td>
            <td>1000</td>
            <td><span class="pull-right">Rs18,893.00 </span></td>
            <td><span class="pull-right">Rs131,107.00 </span></td>
            <td><span class="pull-right">Rs150,000.00 </span></td>
        </tr>
        <tr>
            <td>voice/7?invoice_type=1">May 20, 2015</a></td>
            <td>Nokia 3310 </td>
            <td>10000</td>
            <td><span class="pull-right">Rs2,520,000.00 </span></td>
            <td><span class="pull-right">Rs12,480,000.00 </span></td>
            <td><span class="pull-right">Rs15,000,000.00 </span></td>
        </tr>
        <tr>
            <td>May 20, 2015</a></td>
            <td>Nokia 3310 </td>
            <td>1000</td>
            <td><span class="pull-right">Rs404,000.00 </span></td>
            <td><span class="pull-right">Rs1,096,000.00 </span></td>
            <td><span class="pull-right">Rs1,500,000.00 </span></td>
        </tr>
    </tbody>
</table>

second table:

<table class="table table-striped table-bordered datatable" id="p_history">
    <thead>
        <tr>
            <th>Issue</th>
            <th>Paid</th>
            <th>Comments</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>May 20, 2015, 5:15 pm</td>
            <td>Rs 15,000.00 </td>
            <td></td>
        </tr>
        <tr>
            <td>May 20, 2015, 5:15 pm</td>
            <td>Rs 12.00 </td>
            <td></td>
        </tr>
        <tr>
            <td>May 20, 2015, 5:15 pm</td>
            <td>Rs 123.00 </td>
            <td></td>
        </tr>
        <tr>
            <td>May 20, 2015, 5:15 pm</td>
            <td>Rs 123.00 </td>
            <td></td>
        </tr>
    </tbody>
</table>

知道如何解决吗？

注意:我也看了this未回答的问题，同样的错误，但我的是不同的标准，因此它不是重复的。

Answer 1

原因

您正在尝试使用相同的选项初始化多个表，最重要的一个是aoColumns，数组保存列定义。您的 aoColumns 数组仅包含 3 个项目，但是每个表中的列数不同，这就是您收到错误的原因。

来自manual :

aoColumns: If specified, then the length of this array must be equal to the number of columns in the original HTML table. Use 'null' where you wish to use only the default values and automatically detected options.

解决方案

您需要为第一个表分配唯一的id，并分别初始化每个表，如下所示。

$(document).ready(function() {
   $('#table_first').dataTable( {
       'bSort': false,
       'aoColumns': [
             { sWidth: "15%", bSearchable: false, bSortable: false },
             { sWidth: "15%", bSearchable: false, bSortable: false },
             { sWidth: "15%", bSearchable: false, bSortable: false },
             { sWidth: "15%", bSearchable: false, bSortable: false },
             { sWidth: "15%", bSearchable: false, bSortable: false },
             { sWidth: "15%", bSearchable: false, bSortable: false },
       ],
       "scrollY":        "200px",
       "scrollCollapse": false,
       "info":           true,
       "paging":         true
   });

    $('#p_history').dataTable( {
       'bSort': false,
       'aoColumns': [
             { sWidth: "45%", bSearchable: false, bSortable: false },
             { sWidth: "45%", bSearchable: false, bSortable: false },
             { sWidth: "10%", bSearchable: false, bSortable: false }
       ],
       "scrollY":        "200px",
       "scrollCollapse": false,
       "info":           true,
       "paging":         true
   } );

} );

<script src="//code.jquery.com/jquery-1.10.2.min.js"></script>
<link href="//cdn.datatables.net/1.10.7/css/jquery.dataTables.css" rel="stylesheet"/>
<script src="//cdn.datatables.net/1.10.7/js/jquery.dataTables.js"></script>

<table class="table table-striped table-bordered datatable" id="table_first">
    <thead>
        <tr>
            <th>  Issue      </th>
            <th>  Product      </th>
            <th>  Qty      </th>
            <th class="text-right"> Paid    </th>
            <th class="text-right"> Balance    </th>
            <th class="text-right"> Total    </th>
        </tr>   
    </thead><!-- table head -->
    <tbody>
        <tr>
            <td>May 20, 2015</a></td>
            <td>Normal Sim</td>
            <td>1000</td>
            <td><span class="pull-right">Rs18,893.00 </span></td>
            <td><span class="pull-right">Rs131,107.00 </span></td>
            <td><span class="pull-right">Rs150,000.00 </span></td>
        </tr>
        <tr>
            <td>voice/7?invoice_type=1">May 20, 2015</a></td>
            <td>Nokia 3310 </td>
            <td>10000</td>
            <td><span class="pull-right">Rs2,520,000.00 </span></td>
            <td><span class="pull-right">Rs12,480,000.00 </span></td>
            <td><span class="pull-right">Rs15,000,000.00 </span></td>
        </tr>
        <tr>
            <td>May 20, 2015</a></td>
            <td>Nokia 3310 </td>
            <td>1000</td>
            <td><span class="pull-right">Rs404,000.00 </span></td>
            <td><span class="pull-right">Rs1,096,000.00 </span></td>
            <td><span class="pull-right">Rs1,500,000.00 </span></td>
        </tr>
    </tbody>
</table>

<table class="table table-striped table-bordered datatable" id="p_history">
    <thead>
        <tr>
            <th>Issue</th>
            <th>Paid</th>
            <th>Comments</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>May 20, 2015, 5:15 pm</td>
            <td>Rs 15,000.00 </td>
            <td></td>
        </tr>
        <tr>
            <td>May 20, 2015, 5:15 pm</td>
            <td>Rs 12.00 </td>
            <td></td>
        </tr>
        <tr>
            <td>May 20, 2015, 5:15 pm</td>
            <td>Rs 123.00 </td>
            <td></td>
        </tr>
        <tr>
            <td>May 20, 2015, 5:15 pm</td>
            <td>Rs 123.00 </td>
            <td></td>
        </tr>
    </tbody>
</table>

链接

参见 jQuery DataTables: Common JavaScript console errors有关此错误和其他常见控制台错误的更多信息。