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TOPIC: Display number of rows in array question based on previous numerical input

Display number of rows in array question based on previous numerical input 1 month 1 day ago #113895

  • zer0mode
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Hi, after variety solutions and posts red on this forum i consider myself no more than a fresh beginner in LS environment and even less in javascript.

As an introduction to my survey I'd like to construct a set of similar questions as the OP. That is reading a number which toggles row visibility in the following question. Does this solution here work with version 2.05+ ?

Alternative convenient solution would be to use Variable Length Array, which also didn't work for me. I've found this correction, but without luck. Finally i've tried to alter the simplified version to make it work with "array-multi-flexi-text", but without success.

Can someone give a feedback about functionality of those codes with the latest version of LS ?

As I am not at all experienced with javascript I was bouncing during a long time around the idea of subquestion relevance, but then found out that this might be implemented in the version 2.06.
Last Edit: 1 month 1 day ago by zer0mode. Reason: expressions correction
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Display number of rows in array question based on previous numerical input 1 month 8 hours ago #113906

  • tpartner
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This works in 2.05:

<script type="text/javascript" charset="utf-8">	
	$(document).ready(function(){
 
		// Identify the questions
		var q1ID = '{QID}';
		var q1 = $('#question'+q1ID+'');
		var q2 = $(q1).nextAll('.array-multi-flexi-text:eq(0)'); 
		var q2ID = $(q2).attr('id').split('question')[1];
 
		// Initial row handling
		handleRows($('input[type="text"]', q1));
 
		// Listener on the numeric input
		$('input[type="text"]', q1).change(function(){
			var maxRows = $('tr.subquestion-list', q2).length;
			if($(this).val() > maxRows) {
				alert('You can only display a maximum of '+maxRows+' rows!');
				$(this).val('');
			}
			else {
				handleRows(this);
			}
		});
 
		function handleRows(el) {
			var numRows = $(el).val();
			$('tr.subquestion-list', q2).hide();
			$('tr.subquestion-list', q2).each(function(i){
				if(i >= numRows) {
					$('input[type="text"], select', this).val('');
				}
				else {
					$(this).show();
				}
			})
		}
	});
</script>

File Attachment:

File Name: limesurvey_survey_134517.lss
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Cheers,
Tony Partner

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