# ColVis example Two tables with shared controls

This example shows how the DataTables API can be used with ColVis to use a single ColVis control to effect other tables. This is done by applying ColVis to the first table and then listening for the `column-visibilityDT` event and updating all other tables when triggered.

This example makes use of the `tables()DT` and `table()DT` methods for working with multiple tables, and also initialised ColVis using the `new $.fn.dataTable.ColVis();` operator.

Name | Position | Office | Age | Salary
--- | --- | --- | --- | ---
Name | Position | Office | Age | Salary
Tiger Nixon | System Architect | Edinburgh | 61 | $320,800
Cedric Kelly | Senior Javascript Developer | Edinburgh | 22 | $433,060
Sonya Frost | Software Engineer | Edinburgh | 23 | $103,600
Quinn Flynn | Support Lead | Edinburgh | 22 | $342,000
Dai Rios | Personnel Lead | Edinburgh | 35 | $217,500
Gavin Joyce | Developer | Edinburgh | 42 | $92,575
Martena Mccray | Post-Sales support | Edinburgh | 46 | $324,050
Jennifer Acosta | Junior Javascript Developer | Edinburgh | 43 | $75,650
Shad Decker | Regional Director | Edinburgh | 51 | $183,000

Name | Position | Office | Age | Salary
--- | --- | --- | --- | ---
Name | Position | Office | Age | Salary
Jena Gaines | Office Manager | London | 30 | $90,560
Haley Kennedy | Senior Marketing Designer | London | 43 | $313,500
Tatyana Fitzpatrick | Regional Director | London | 19 | $385,750
Michael Silva | Marketing Designer | London | 66 | $198,500
Bradley Greer | Software Engineer | London | 41 | $132,000
Angelica Ramos | Chief Executive Officer (CEO) | London | 47 | $1,200,000
Suki Burks | Developer | London | 53 | $114,500
Prescott Bartlett | Technical Author | London | 27 | $145,000
Timothy Mooney | Office Manager | London | 37 | $136,200
Bruno Nash | Software Engineer | London | 38 | $163,500
Hermione Butler | Regional Director | London | 47 | $356,250
Lael Greer | Systems Administrator | London | 21 | $103,500

- Javascript
- HTML
- CSS
- Ajax
- Server-side script

The Javascript shown below is used to initialise the table shown in this example:

`$(document).ready(function() { var tables = $('table.display').DataTable( { displayLength: 5 } ); // When the column visibility changes on the firs table, also change it on // the others tables.table(0).on('column-visibility', function ( e, settings, colIdx, visibility ) { tables.tables(':gt(0)').column( colIdx ).visible( visibility ); } ); // Create ColVis on the first table only var colvis = new $.fn.dataTable.ColVis( tables.table(0) ); $( colvis.button() ).insertAfter('div.info'); } );`

In addition to the above code, the following Javascript library files are loaded for use in this example:

- ../../../media/js/jquery.js
- ../../../media/js/jquery.dataTables.js
- ../js/dataTables.colVis.js

The HTML shown below is the raw HTML table element, before it has been enhanced by DataTables:

This example uses a little bit of additional CSS beyond what is loaded from the library files (below), in order to correctly display the table. The additional CSS used is shown below:

``

The following CSS library files are loaded for use in this example to provide the styling of the table:

- ../../../media/css/jquery.dataTables.css
- ../css/dataTables.colVis.css

This table loads data by Ajax. The latest data that has been loaded is shown below. This data will update automatically as any additional data is loaded.

The script used to perform the server-side processing for this table is shown below. Please note that this is just an example script using PHP. Server-side processing scripts can be written in any language, using the protocol described in the DataTables documentation.