Change stylesheet of an answer option column in a single grid question

Challenge

In order to highlight an answer option column

As a questionnaire creator

I want to change the style sheet of a specific answer option column in a single grid question

Example

I have a single grid question like below.

I want to change the style of Don't know column.

Solution

Change the style sheet of answer option text and radio button cells.

Code

 1 //change style of a SINGLE grid question's answer option column 
 2 //answerOptionValue: value of the answer option column 
 3 //newColor: the new background color of the column's cells 
 4 quest.changeAnswerOptionColumnStyle = function(answerOptionValue, cssClass) 
 5 { 
 6 	//change style of answer option text
 7 	$("#grid_answeroption_text_" + answerOptionValue).addClass(cssClass);
 8 
 9 	//change style of answer option cells
10 	$("input:radio").each(
11 		function(i)
12 		{
13 			if ($(this).val() == answerOptionValue)
14 				$(this).parent().addClass(cssClass);
15 		}
16 	)
17 }
18 
19 quest.onInit = function() 
20 { 
21 	var dontKnow_value = 3;
22 	this.changeAnswerOptionColumnStyle(dontKnow_value, "another_column_css");
23 }

;