Answers

• kthorngren Posts: 21,344Questions: 26Answers: 4,954

  July 2023 Answer ✓

  Your test case has a couple errors. First this:

  DataTables warning: table id=example - Cannot reinitialise DataTable. For more information about this error, please see http://datatables.net/tn/3

  Its due to having duplicate code in the HTML tab and the Javascript tab. Removing the duplicate code results in this error when clicking a row:

  Uncaught ReferenceError: id is not defined
  at HTMLTableRowElement.<anonymous> (<anonymous>:33:13)

    $('#example tbody').on('click', 'tr', function () {
      let ding = table.row(this).data()[0];
      alert ( id );
    } );
  

  Your assignment is wrong. The issue you are asking about is with .data()[0]. You defined columns.data which means the rows are using object based data but .data()[0] is using array notation. Use .data().line_id. Here is the updated example with all the fixes:
  https://live.datatables.net/vezukubi/1/edit

  Kevin