jQuery Datatable按钮未显示

我正在使用这些cdn

---

执行此代码段时，按钮没有显示您的代码有问题，这是扩展和添加自定义文本的正确语法

buttons: [
    {
    extend: 'copyHtml5',
    text: "copy to clipboard"
  },
  {
    extend: 'excelHtml5',
    text: 'Save as excel sheet'
  },
  'csvHtml5',
  'pdfHtml5'
]

---

工作演示：

这里您有@Sambatat的另一个答案中使用的当前cdn，非常适合我

<script type="text/javascript" src="https://cdn.datatables.net/1.10.12/css/jquery.dataTables.min.css"></script>
<script type="text/javascript" src="https://cdn.datatables.net/buttons/1.2.2/css/buttons.dataTables.min.css"></script>
<script type="text/javascript" src="https://code.jquery.com/jquery-1.12.3.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/1.10.12/js/jquery.dataTables.min.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/buttons/1.2.2/js/dataTables.buttons.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jszip/2.5.0/jszip.min.js"></script>
<script type="text/javascript" src="https://cdn.rawgit.com/bpampuch/pdfmake/0.1.18/build/pdfmake.min.js"></script>
<script type="text/javascript" src="https://cdn.rawgit.com/bpampuch/pdfmake/0.1.18/build/vfs_fonts.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/buttons/1.2.2/js/buttons.html5.min.js"></script>

此代码实际不起作用，但按钮仍不显示哪个按钮未显示？你是在谈论我的演示吗？你能分享一下所有cdn都在使用什么吗？你可以在JSFIDLE的“外部资源”下看到它们

 $('#tblId').DataTable({
                    dom: 'Bfrtip',

                    buttons: [
                      {
                          extend: 'collection',
                          text: 'Export',
                          buttons: ['pdfHtml5', 'csvHtml5', 'copyHtml5', 'excelHtml5']
                      }
                    ]
                });

buttons: [
    {
    extend: 'copyHtml5',
    text: "copy to clipboard"
  },
  {
    extend: 'excelHtml5',
    text: 'Save as excel sheet'
  },
  'csvHtml5',
  'pdfHtml5'
]

<script type="text/javascript" src="https://cdn.datatables.net/1.10.12/css/jquery.dataTables.min.css"></script>
<script type="text/javascript" src="https://cdn.datatables.net/buttons/1.2.2/css/buttons.dataTables.min.css"></script>
<script type="text/javascript" src="https://code.jquery.com/jquery-1.12.3.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/1.10.12/js/jquery.dataTables.min.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/buttons/1.2.2/js/dataTables.buttons.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jszip/2.5.0/jszip.min.js"></script>
<script type="text/javascript" src="https://cdn.rawgit.com/bpampuch/pdfmake/0.1.18/build/pdfmake.min.js"></script>
<script type="text/javascript" src="https://cdn.rawgit.com/bpampuch/pdfmake/0.1.18/build/vfs_fonts.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/buttons/1.2.2/js/buttons.html5.min.js"></script>