Uncaught TypeError: 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：我还阅读了this未回答的问题，同样的错误，但我的标准不同，因此它不是重复的。

Answer 1

如 DataTables usage guide 中所述，您需要在 table 中声明 thead 和 tbody 部分才能使插件正常工作。

这个东西之前也讨论过here at SO，所以下次谷歌或SO搜索可能是个好东西。

Answer 2

如果您的 aaData 是数组的数组，例如 [["col11","col12","col13"],["col21","col22","col23"]]，那么只有您上面的代码可以工作，否则它会期望 mdata 属性设置为 col 值，例如 aaData=[{col1:"col1val",col2:"col2val",col3:"col3val"}]、

映射 aoColumns- 所以在 aoColumns 中：[{mdata:"col1"}]

这样做 -

$(document).ready(function() {
         $('#p_history').dataTable( {
            'bSort': false,
            'aoColumns': [
                  { sWidth: "45%", bSearchable: false, bSortable: false },
                  { sWidth: "45%", bSearchable: false, bSortable: false },
                  { sWidth: "10%", bSearchable: false, bSortable: false },
                  //match the number of columns here for table1
            ],
            "scrollY":        "200px",
            "scrollCollapse": false,
            "info":           true,
            "paging":         true
        } );


//Now for another table
         $('#secondTableId').dataTable( {
            'bSort': false,
            'aoColumns': [
                  { sWidth: "45%", bSearchable: false, bSortable: false },
                  { sWidth: "45%", bSearchable: false, bSortable: false },
                  { sWidth: "10%", bSearchable: false, bSortable: false },
                  //match the number of columns here for table2
            ],
            "scrollY":        "200px",
            "scrollCollapse": false,
            "info":           true,
            "paging":         true
        } );
    } );

Answer 3

原因

您正在尝试使用相同的选项初始化多个 table，最重要的是 aoColumns，包含列定义的数组。您的 aoColumns 数组仅包含 3 个项目，但是每个 table 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

您需要将唯一的 id 分配给第一个 table 并分别初始化每个 table，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

有关此错误和其他常见控制台错误的详细信息，请参阅 jQuery DataTables: Common JavaScript console errors。

Answer 4

我在使用 id 名称（如 k_something_1 时遇到此错误。我通过 'renaming' 将其解决为 ksomething1.

Uncaught TypeError: Cannot read property 'mData' of undefined

Uncaught TypeError: Cannot read property 'mData' of undefined

javascript

php

jquery

jquery-datatables

原因

解决方案

链接