title: how to change export file name dynamic in data Tables?
body: <pre><code> $("#dataTable").DataTable({                    
                      dom: 'Bfrtip',
                      buttons: [
                               { extend: 'excel', text:'export to excel',title:'1'},
                      ],
  })
  </code></pre>
  
  <p>I can change the text of the button by the following code,but I can't get the title property.</p>
  
  <pre><code>var table= $("#dataTable").DataTable();
  tabele.button(0).text('excel');
  </code></pre>