How can i display loading/processing message inside DataTable?

Question

In my application i am using datatables.net

var ticketHistoryDataTable = $('#ticketHistoryData').DataTable({ 
        paging: false,
        data: [],
        searching: false,
        columns: [
            { data: 'ticket_id'         ,   title: "Ticket Number" },
            { data: 'transactiondate'   ,   title: "Date"          } 
        ]
} );

I am adding data to the table following way:

    var result_data = [{
            ticket_id         : '' ,
            transactiondate   : '' 
    },{
            ticket_id         : '' ,
            transactiondate   : '' 
    }];

    ticketHistoryDataTable.clear().draw();
    ticketHistoryDataTable.rows.add(result_data).draw();

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?

Answer 1

You can use a loader in your html. Position should be same as the table. How to add a loader in HTML

or Message container: <div id="MessageContainer"></div> and Apply some CSS styles for good look and feel.

     $('#ticketHistoryData')
        .on( 'draw.dt', function () {
            console.log( 'Loading' );
          //Here show the loader.
          // $("#MessageContainer").html("Your Message while loading");
        } )
        .on( 'init.dt', function () {
            console.log( 'Loaded' );
           //Here hide the loader.
            // $("#MessageContainer").html("Your Message while load Complete");
        } )
        .DataTable({ 
            paging: false,
            data: [],
            searching: false,
            columns: [
                { data: 'ticket_id'         ,   title: "Ticket Number" },
                { data: 'transactiondate'   ,   title: "Date"          } 
            ]
     });

For more go through Events of DataTable

I think this might help you.

You might show message

Answer 2

You can use dom option to show loading:

$('#example').dataTable( {
  "dom": 'lrtip'
} );

"r" letter is related to show loading element.
For more information refer to this link