Highlighting rows and columns have be quite useful for drawing attention to where the user's cursor is in a table, particularly if you have a lot of narrow columns. Of course the highlighting of a row is easy enough using CSS, but for column highlighting, you need to use a little bit of Javascript.
This example shows that in action on DataTable by making use of the cell().index() method to get the index of the column that is to be operated on,
and then the cells().nodes() and column().nodes() methods to remove old classes and apply the new highlighted
class, respectively.
| Name | Position | Office | Age | Start date | Salary |
|---|---|---|---|---|---|
| Name | Position | Office | Age | Start date | Salary |
| Tiger Nixon | System Architect | Edinburgh | 61 | 2011/04/25 | $3,120 |
| Garrett Winters | Director | Edinburgh | 63 | 2011/07/25 | $5,300 |
| Ashton Cox | Technical Author | San Francisco | 66 | 2009/01/12 | $4,800 |
| Cedric Kelly | Javascript Developer | Edinburgh | 22 | 2012/03/29 | $3,600 |
| Jenna Elliott | Financial Controller | Edinburgh | 33 | 2008/11/28 | $5,300 |
| Brielle Williamson | Integration Specialist | New York | 61 | 2012/12/02 | $4,525 |
| Herrod Chandler | Sales Assistant | San Francisco | 59 | 2012/08/06 | $4,080 |
| Rhona Davidson | Integration Specialist | Edinburgh | 55 | 2010/10/14 | $6,730 |
| Colleen Hurst | Javascript Developer | San Francisco | 39 | 2009/09/15 | $5,000 |
| Sonya Frost | Software Engineer | Edinburgh | 23 | 2008/12/13 | $3,600 |
| Jena Gaines | System Architect | London | 30 | 2008/12/19 | $5,000 |
| Quinn Flynn | Financial Controller | Edinburgh | 22 | 2013/03/03 | $4,200 |
| Charde Marshall | Regional Director | San Francisco | 36 | 2008/10/16 | $5,300 |
| Haley Kennedy | Senior Marketing Designer | London | 43 | 2012/12/18 | $4,800 |
| Tatyana Fitzpatrick | Regional Director | London | 19 | 2010/03/17 | $2,875 |
| Michael Silva | Senior Marketing Designer | London | 66 | 2012/11/27 | $3,750 |
| Paul Byrd | Javascript Developer | New York | 64 | 2010/06/09 | $5,000 |
| Gloria Little | Systems Administrator | New York | 59 | 2009/04/10 | $3,120 |
| Bradley Greer | Software Engineer | London | 41 | 2012/10/13 | $3,120 |
| Dai Rios | System Architect | Edinburgh | 35 | 2012/09/26 | $4,200 |
| Jenette Caldwell | Financial Controller | New York | 30 | 2011/09/03 | $4,965 |
| Yuri Berry | System Architect | New York | 40 | 2009/06/25 | $3,600 |
| Caesar Vance | Technical Author | New York | 21 | 2011/12/12 | $4,965 |
| Doris Wilder | Sales Assistant | Edinburgh | 23 | 2010/09/20 | $4,965 |
| Angelica Ramos | System Architect | London | 36 | 2009/10/09 | $2,875 |
| Gavin Joyce | Developer | Edinburgh | 42 | 2010/12/22 | $4,525 |
| Jennifer Chang | Regional Director | London | 28 | 2010/11/14 | $4,080 |
| Brenden Wagner | Software Engineer | San Francisco | 18 | 2011/06/07 | $3,750 |
| Ebony Grimes | Software Engineer | San Francisco | 48 | 2010/03/11 | $2,875 |
| Russell Chavez | Director | Edinburgh | 20 | 2011/08/14 | $3,600 |
| Michelle House | Integration Specialist | Edinburgh | 37 | 2011/06/02 | $3,750 |
| Suki Burks | Developer | London | 53 | 2009/10/22 | $2,875 |
| Prescott Bartlett | Technical Author | London | 27 | 2011/05/07 | $6,730 |
| Gavin Cortez | Technical Author | San Francisco | 22 | 2008/10/26 | $6,730 |
| Martena Mccray | Integration Specialist | Edinburgh | 46 | 2011/03/09 | $4,080 |
| Unity Butler | Senior Marketing Designer | San Francisco | 47 | 2009/12/09 | $3,750 |
| Howard Hatfield | Financial Controller | San Francisco | 51 | 2008/12/16 | $4,080 |
| Hope Fuentes | Financial Controller | San Francisco | 41 | 2010/02/12 | $4,200 |
| Vivian Harrell | System Architect | San Francisco | 62 | 2009/02/14 | $4,965 |
| Timothy Mooney | Financial Controller | London | 37 | 2008/12/11 | $4,200 |
| Jackson Bradshaw | Director | New York | 65 | 2008/09/26 | $5,000 |
| Miriam Weiss | Support Engineer | Edinburgh | 64 | 2011/02/03 | $4,965 |
| Bruno Nash | Software Engineer | London | 38 | 2011/05/03 | $4,200 |
| Odessa Jackson | Support Engineer | Edinburgh | 37 | 2009/08/19 | $3,600 |
| Thor Walton | Developer | New York | 61 | 2013/08/11 | $3,600 |
| Finn Camacho | Support Engineer | San Francisco | 47 | 2009/07/07 | $4,800 |
| Elton Baldwin | Data Coordinator | Edinburgh | 64 | 2012/04/09 | $6,730 |
| Zenaida Frank | Software Engineer | New York | 63 | 2010/01/04 | $4,800 |
| Zorita Serrano | Software Engineer | San Francisco | 56 | 2012/06/01 | $5,300 |
| Jennifer Acosta | Javascript Developer | Edinburgh | 43 | 2013/02/01 | $2,875 |
| Cara Stevens | Sales Assistant | New York | 46 | 2011/12/06 | $4,800 |
| Hermione Butler | Director | London | 47 | 2011/03/21 | $4,080 |
| Lael Greer | Systems Administrator | London | 21 | 2009/02/27 | $3,120 |
| Jonas Alexander | Developer | San Francisco | 30 | 2010/07/14 | $5,300 |
| Shad Decker | Regional Director | Edinburgh | 51 | 2008/11/13 | $5,300 |
| Michael Bruce | Javascript Developer | Edinburgh | 29 | 2011/06/27 | $4,080 |
| Donna Snider | System Architect | New York | 27 | 2011/01/25 | $3,120 |
The Javascript shown below is used to initialise the table shown in this example:
$(document).ready(function() {
var lastIdx = null;
var table = $('#example').DataTable();
$('#example tbody')
.on( 'mouseover', 'td', function () {
var colIdx = table.cell(this).index().column;
if ( colIdx !== lastIdx ) {
$( table.cells().nodes() ).removeClass( 'highlight' );
$( table.column( colIdx ).nodes() ).addClass( 'highlight' );
}
} )
.on( 'mouseleave', function () {
$( table.cells().nodes() ).removeClass( 'highlight' );
} );
} );
In addition to the above code, the following Javascript library files are loaded for use in this example:
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:
td.highlight {
background-color: whitesmoke !important;
}
The following CSS library files are loaded for use in this example to provide the styling of the table:
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.