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Equation Question type - Using JavaScript, to generate the question.

sebinbenjamin
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7 years 8 months ago - 7 years 8 months ago #140907 by sebinbenjamin

Equation Question type - Using JavaScript, to generate the question. was created by sebinbenjamin

Hi,

I need to calculate a score based on survey answers and also store it to the database. I have understood that the equation question type does this for you. I am able to change the question text by using javascript document.write(). But it seems that the result is not being stored in the survey response. Please help regarding the same. I was not able to find or understand any solution to the same in the forum and documentations.

This is my equation question.

Code:

<script>
var f01,fO2,f03,sum;
 
//Yes/No Question 1
if('{F01.NAOK}'=='Y')
  f01 = 1; 
else if('{F01.NAOK}'=='N')
  f01 = -1;
else
  f01 = 0;
 
//Yes/No Question 2
if('{F02.NAOK}'=='Y')
  f02 = 1; 
else if('{F02.NAOK}'=='N')
  f02 = -1;
else
  f02 = 0;
 
//Yes/No Question 3
if('{F03.NAOK}'=='Y')
  f03 = 1; 
else if('{F03.NAOK}'=='N')
  f03 = -1;
else
  f03 = 0;
sum = f01 + f02 + f03;
document.write(sum);
</script>

I am using limesurvey Version 2.50+ Build 160810 running in a docker container.

Last edit: 7 years 8 months ago by sebinbenjamin. Reason: added info

The topic has been locked.

tpartner
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LimeSurvey Community Team

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7 years 8 months ago - 7 years 8 months ago #140909 by tpartner

Replied by tpartner on topic Equation Question type - Using JavaScript, to generate the question.

You cannot use JavaScript to insert values into equation type questions. If you need to use JS, insert the values into a hidden short-text question.

Code:

<script type="text/javascript" charset="utf-8">    
  $(document).ready(function() {
    // Hide this question
    $('#question{QID}').hide();
 
 
    var f01,fO2,f03,sum;
 
    //Yes/No Question 1
    if('{F01.NAOK}'=='Y')
      f01 = 1; 
    else if('{F01.NAOK}'=='N')
      f01 = -1;
    else
      f01 = 0;
 
    //Yes/No Question 2
    if('{F02.NAOK}'=='Y')
      f02 = 1; 
    else if('{F02.NAOK}'=='N')
      f02 = -1;
    else
      f02 = 0;
 
    //Yes/No Question 3
    if('{F03.NAOK}'=='Y')
      f03 = 1; 
    else if('{F03.NAOK}'=='N')
      f03 = -1;
    else
      f03 = 0;
    sum = f01 + f02 + f03;
 
    $('#question{QID} input[type="text"]').val(sum);
  });
</script>

Cheers,
Tony Partner
Solutions, code and workarounds presented in these forums are given without any warranty, implied or otherwise.

Last edit: 7 years 8 months ago by tpartner.

The following user(s) said Thank You: sebinbenjamin

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Joffm
Online
LimeSurvey Community Team

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7 years 8 months ago #140912 by Joffm

Replied by Joffm on topic Equation Question type - Using JavaScript, to generate the question.

Hi, sebinbenjamin,

and here the same if you want to use an expression question:
{sum(if(F01.NAOK=='Y',1,if(F01.NAOK=='N',-1,0)),if(F02.NAOK=='Y',1,if(F02.NAOK=='N',-1,0)),if(F03.NAOK=='Y',1,if(F03.NAOK=='N',-1,0)))}

Regards
Joffm

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The following user(s) said Thank You: sebinbenjamin

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