title: How can i display loading/processing message inside DataTable?
body: <p>In my application i am using <a href="https://datatables.net" rel="noreferrer">datatables.net</a></p>
  
  <pre><code>var ticketHistoryDataTable = $('#ticketHistoryData').DataTable({ 
          paging: false,
          data: [],
          searching: false,
          columns: [
              { data: 'ticket_id'         ,   title: "Ticket Number" },
              { data: 'transactiondate'   ,   title: "Date"          } 
          ]
  } );
  </code></pre>
  
  <p>I am adding data to the table following way:</p>
  
  <pre><code>    var result_data = [{
              ticket_id         : '' ,
              transactiondate   : '' 
      },{
              ticket_id         : '' ,
              transactiondate   : '' 
      }];
  
      ticketHistoryDataTable.clear().draw();
      ticketHistoryDataTable.rows.add(result_data).draw();
  </code></pre>
  
  <p>result_data itself comes from jquery ajax get call to server. Retrieving the information may take some time, during which i want to display loading-processing message from datatable. What is correct way of doing this?</p>