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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 11 months 3 weeks ago #95371

  • ricardo
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I'd like to create an array question that only displays certain number of rows based on a response to a previous numerical input.

In this example, if a person says that she teaches 2 courses (#1), question 2 should display only 2 rows (#2)


numberofrows_2013-04-26.PNG




is it possible to do this?

Thanks
Last Edit: 11 months 3 weeks ago by ricardo. Reason: wrong pic
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Display number of rows in array question based on previous numerical input 11 months 3 weeks ago #95385

  • tpartner
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If both questions are on the same page as your image indicates, add this to the source of the numeric question.
<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 = $('tr:[id^="javatbd"]', q2).length;
			if($(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:[id^="javatbd"]', q2).hide();
			$('tr:[id^="javatbd"]', q2).each(function(i){
				if(i >= numRows) {
					$('input[type="text"], select', this).val('');
				}
				else {
					$(this).show();
				}
			})
		}
	});
</script>

Here's a sample survey:

File Attachment:

File Name: limesurvey_survey_372272_2013-04-28.lss
File Size: 19 KB
Cheers,
Tony Partner

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LimeSurvey is open-source and run entirely by volunteers so please consider donating to support the project.
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Display number of rows in array question based on previous numerical input 11 months 3 weeks ago #95387

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As always, Thank you very much, Tony.

ricardo
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Display number of rows in array question based on previous numerical input 11 months 3 weeks ago #95391

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You're welcome :). Enjoy your Sunday.
Cheers,
Tony Partner

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Display number of rows in array question based on previous numerical input 11 months 1 week ago #95763

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Hi Tony,

There small glitch in this workaround

The rows don't display as soon as the number is entered...they only show up after clicking somewhere else...is there a way to make the rows appear as soon as the number is entered.


rows.png


this is a link to the question broaderimpacts.org/surveys/limesurvey/index.php/289571/lang-en

rg
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Display number of rows in array question based on previous numerical input 11 months 1 week ago #95776

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That is not a "glitch", it is by design.

The handleRows() function is not fired until the respondent is finished inputting their value (the input is de-focussed) to avoid "bouncing" if you have more than 9 rows. (if someone enters 12, it would first show 2 rows and then 12)

If have less than 10 rows, change this:
$('input[type="text"]', q1).change(function(){

To this:
$('input[type="text"]', q1).mouseup(function(){
Cheers,
Tony Partner

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Display number of rows in array question based on previous numerical input 11 months 1 week ago #95786

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thanks, Tony

Also, is it possible to make the array question mandatory? This is what it looks now. In this example, only info about 3 courses should be entered...but still the person gets the warning


mandatory.png
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Display number of rows in array question based on previous numerical input 11 months 1 week ago #95798

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The easiest way to handle that would be to populate all of the hidden text inputs with an "N/A" value.

So, the script in the "How many courses..." question would become:
<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).mouseup(function(){
			var maxRows = $('tr:[id^="javatbd"]', q2).length;
			if($(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:[id^="javatbd"]', q2).hide();
			$('tr:[id^="javatbd"]', q2).each(function(i){
				if(i >= numRows) {
					$('input[type="text"], select', this).val('');
				}
				else {
					$(this).show();
				}
			})
		}
 
		// Interrupt next/submit function
		$('form#limesurvey').submit(function(){
 
			// Load hidden inputs
			$('.subquestions-list tr:hidden input[type="text"]', q2).val('N/A');
 
			// Carry on with submit
			return true;
		});
	});
</script>
Cheers,
Tony Partner

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The following user(s) said Thank You: oppur

Display number of rows in array question based on previous numerical input 10 months 4 weeks ago #96331

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tpartner wrote:
If both questions are on the same page as your image indicates, add this to the source of the numeric question.
<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 = $('tr:[id^="javatbd"]', q2).length;
			if($(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:[id^="javatbd"]', q2).hide();
			$('tr:[id^="javatbd"]', q2).each(function(i){
				if(i >= numRows) {
					$('input[type="text"], select', this).val('');
				}
				else {
					$(this).show();
				}
			})
		}
	});
</script>

Here's a sample survey:

File Attachment:

File Name: limesurvey_survey_372272_2013-04-28.lss
File Size: 19 KB

Thank you. This work fine in Chrome, Safari, IE8. But not in IE10.
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Display number of rows in array question based on previous numerical input 10 months 4 weeks ago #96350

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I found a temporary solution:
If I add to template startpage.pstpl
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE8">
then this script work on IE10
Last Edit: 10 months 4 weeks ago by oppur.
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