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the rest (only two columns in this particular table). On columns.width the example shown uses

Datatable seems to let the user not specify columns.data when setting columns.defaultContent to an empty string (shown below). Is this correct? var table = $('#example').DataTable( { "serverSide": false, "ajax": "https://api.myjson.com/bins/1frdi", "columns": [ { "defaultContent": "" }, { "data": "position" }, { "data": "office" }, { "data": "extn" }, { "data": "start_date" }, { "data": "salary" } ] } );

You can do either, and it can actually be useful to do both, but the value defined in the columns array will always "win". There can be only one value in the end (to paraphrase an old film :-) ). Allan

the content of the columns to me. Did you

taking into account hidden columns. In this for loop

Select Columns', buttons: [ { extend: 'columnsToggle', columns: ':not([data-visible="false"])' } ], className: 'btn btn-primary

Did you read the AJAX documentation? https://datatables.net/manual/ajax If you are looking to manipulate specific columns from the data, you can use the columns.render option. https://datatables.net/reference/option/columns.render

my problem when right columns are hidden with responsive.

decided to show the columns using column().visible() before the

chars, words across multiple columns, etc. Same sort of