Phill Pafford Phill Pafford - 3 months ago 19
CSS Question

jQuery highlighting selected columns only in a table

I see this post on highlighting even columns but can I highlight only selected columns?

Here is the code they use:

$("table.Table22 > tbody > tr > td:nth-child(even)").css("background","blue");


But I would like: NOTE: the
class="highlight"
will be on the selected columns, so if I selected column 3 the
class="highlight"
would be removed from column 2 and added to column 3. jQuery needs to add the class based on selected column.

<table class="tbl">
<tr>
<th class="firstColumn">
Cell 1:Heading
</th>
<th class="highlight">
Selected column so this should be highlighted
</th>
<th>
Cell 3:Heading
</th>
<th>
Cell 4:Heading
</th>
<th>
Cell 5:Heading
</th>
</tr>
<tr>
<td>
Cell 1:Row 1
</td>
<td class="highlight">
Selected column so this should be highlighted
</td>
<td>
Cell 3:Row 1
</td>
<td>
Cell 4:Row 1
</td>
<td>
Cell 5:Row 1
</td>
</tr>
<tr>
<td>
Cell 1:Row 2
</td>
<td class="highlight">
Selected column so this should be highlighted
</td>
<td>
Cell 3:Row 2
</td>
<td>
Cell 4:Row 2
</td>
<td>
Cell 5:Row 2
</td>
</tr>
</table>

Answer

You might want to take a look at jQuery tableHover plugin to achieve this. Then use something like this

$('table.tbl').tableHover({
    colClass: 'hover', 
    clickClass: 'click', 
    headCols: true, 
    footCols: true 
}); 

EDIT:

Something like this?

Working Demo - Click on any cell, to highlight the column

Code from demo -

$(function() {
  var rows = $('table.tbl tr');  

  rows.children().click(function() {

    rows.children().removeClass('highlight');  
    var index = $(this).prevAll().length;  
    rows.find(':nth-child(' + (index + 1) + ')').addClass('highlight');

  });
});