Can anyone help? (Show data for selected row and error in console output)

asbjotve

This is my table: https://live.datatables.net/vezukubi/1/

I have tried to get a dialog (alert) that will output the line_id for selected row. But I can't get it to work.
Also, the console output shows ""[object Object] (line 3)" - what does that means?

kthorngren

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